WO2012066968A1 - Non-asbestos friction material composition, and friction material and friction member using same - Google Patents
Non-asbestos friction material composition, and friction material and friction member using same Download PDFInfo
- Publication number
- WO2012066968A1 WO2012066968A1 PCT/JP2011/075643 JP2011075643W WO2012066968A1 WO 2012066968 A1 WO2012066968 A1 WO 2012066968A1 JP 2011075643 W JP2011075643 W JP 2011075643W WO 2012066968 A1 WO2012066968 A1 WO 2012066968A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- friction material
- friction
- material composition
- copper
- asbestos
- Prior art date
Links
- 239000002783 friction material Substances 0.000 title claims abstract description 139
- 239000010425 asbestos Substances 0.000 title claims abstract description 47
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 claims abstract description 69
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052802 copper Inorganic materials 0.000 claims abstract description 45
- 239000010949 copper Substances 0.000 claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010439 graphite Substances 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 19
- 239000011256 inorganic filler Substances 0.000 claims abstract description 16
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 16
- 239000012766 organic filler Substances 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims description 79
- OBTSLRFPKIKXSZ-UHFFFAOYSA-N lithium potassium Chemical compound [Li].[K] OBTSLRFPKIKXSZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- KYNMDCQWTUNNCD-UHFFFAOYSA-N lithium;potassium;oxygen(2-);titanium(4+) Chemical compound [Li+].[O-2].[O-2].[O-2].[K+].[Ti+4] KYNMDCQWTUNNCD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 description 15
- 239000002585 base Substances 0.000 description 14
- 239000002557 mineral fiber Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 10
- 244000226021 Anacardium occidentale Species 0.000 description 9
- 235000020226 cashew nut Nutrition 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000012784 inorganic fiber Substances 0.000 description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 9
- 150000002989 phenols Chemical class 0.000 description 9
- 239000000428 dust Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 7
- 239000005060 rubber Substances 0.000 description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 239000000395 magnesium oxide Substances 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- -1 chromite Chemical compound 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000003256 environmental substance Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229940007424 antimony trisulfide Drugs 0.000 description 1
- NVWBARWTDVQPJD-UHFFFAOYSA-N antimony(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Sb+3].[Sb+3] NVWBARWTDVQPJD-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- NNLOHLDVJGPUFR-UHFFFAOYSA-L calcium;3,4,5,6-tetrahydroxy-2-oxohexanoate Chemical compound [Ca+2].OCC(O)C(O)C(O)C(=O)C([O-])=O.OCC(O)C(O)C(O)C(=O)C([O-])=O NNLOHLDVJGPUFR-UHFFFAOYSA-L 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007912 intraperitoneal administration Methods 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 230000007918 pathogenicity Effects 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- AFNRRBXCCXDRPS-UHFFFAOYSA-N tin(ii) sulfide Chemical compound [Sn]=S AFNRRBXCCXDRPS-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000005748 tumor development Effects 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
Definitions
- friction materials such as disc brake pads and brake linings are used for braking.
- the friction material plays a role of braking by rubbing against a facing material such as a disk rotor or a brake drum. Therefore, the friction material is required not only to have a high coefficient of friction and stability of the coefficient of friction, but also to make it difficult to scrape the disk rotor that is the facing material (rotor wear resistance) and to make it difficult to squeal (squeal characteristics).
- a long pad life wear resistance
- durability performance is required, such as not causing shear fracture during high-load braking (shear strength) and not causing cracks in the friction material due to high-temperature braking history (crack resistance).
- the friction material includes a binder, a fiber base material, an inorganic filler, an organic filler, and the like, and generally includes one or a combination of two or more in order to exhibit the above characteristics.
- a fiber base material organic fiber, metal fiber, inorganic fiber, or the like is used.
- copper or copper alloy fiber is generally used as the metal fiber.
- a chip or powder of copper or copper alloy may be used.
- Non-asbestos friction materials are mainly used as friction materials, and copper, copper alloys, and the like are used in large amounts for the non-asbestos friction materials.
- metal fibers other than copper and copper alloys include, for example, fibers in the form of simple metals or alloys such as aluminum, iron, zinc, tin, titanium, nickel, magnesium, and silicon, and fibers mainly composed of metals such as cast iron fibers. These can be used alone or in combination of two or more.
- the content of the fiber base material in the non-asbestos friction material composition of the present invention is preferably 5 to 40% by mass in the friction material composition, including metal fibers of copper or copper alloy. More preferred is 5 to 15% by mass.
- Level 1 No cracks generated
- Level 2 Cracks to the extent that a 0.1 mm thickness gauge does not enter the friction surface or side surface of the friction material
- Level 3 A 0.1 mm thickness gauge is formed on the friction surface or side surface of the friction material If a crack that does not contain a thickness gauge is generated on one of the friction surface and the side surface of the friction material and a crack that contains a thickness gauge is generated on the other side, the level 3 is set. (3) Evaluation of wear resistance The wear resistance was measured based on the Japan Society of Automotive Engineers standard JASO C427, and the wear amount of the friction material corresponding to 1000 brakings at a brake temperature of 100 ° C and 300 ° C was evaluated.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Provided is a non-asbestos friction material composition containing a bonding material, an organic filler, an inorganic filler, and a fibrous substrate, said friction material composition being characterised by the content of copper in the friction material composition being at most 5 mass% as elemental copper, the content of metal fibres other than copper and copper alloys being at most 0.5 mass%, and containing lithium potassium titanium oxide and graphite. Even if the content of environmental pollutants such as copper and copper fibres is low, the non-asbestos friction material composition can provide a friction material exhibiting an excellent friction coefficient, crack resistance, and wear resistance. Further provided are a friction material and friction member using the non-asbestos friction material composition.
Description
本発明は、ノンアスベスト摩擦材組成物、これを用いた摩擦材及び摩擦部材に関する。詳しくは、自動車などの制動に用いられるディスクブレーキパッドやブレーキライニングなどの摩擦材に適しており、銅の含有量が少ないため、環境汚染を防止でき、かつ摩擦係数、耐クラック性及び耐摩耗性に優れたノンアスベスト摩擦材組成物、さらに該ノンアスベスト摩擦材組成物を用いた摩擦材及び摩擦部材に関する。
The present invention relates to a non-asbestos friction material composition, a friction material using the same, and a friction member. Specifically, it is suitable for friction materials such as disc brake pads and brake linings used for braking in automobiles, etc., and because of its low copper content, it can prevent environmental pollution and has a coefficient of friction, crack resistance and wear resistance. And a friction material and a friction member using the non-asbestos friction material composition.
自動車などには、その制動のためにディスクブレーキパッドやブレーキライニングなどの摩擦材が使用されている。摩擦材は、ディスクローターやブレーキドラムなどの対面材と摩擦することにより、制動の役割を果たしている。そのため、摩擦材には、高い摩擦係数と摩擦係数の安定性が求められるだけでなく、対面材であるディスクローターを削り難いこと（耐ローター摩耗性）、鳴きが発生しにくいこと（鳴き特性）、パッド寿命が長いこと（耐摩耗性）などが要求される。また、高負荷の制動時に剪断破壊を起こさないこと（剪断強度）や、高温の制動履歴によって摩擦材に亀裂を生じないこと（耐クラック性）などの耐久性能も要求される。
In automobiles, friction materials such as disc brake pads and brake linings are used for braking. The friction material plays a role of braking by rubbing against a facing material such as a disk rotor or a brake drum. Therefore, the friction material is required not only to have a high coefficient of friction and stability of the coefficient of friction, but also to make it difficult to scrape the disk rotor that is the facing material (rotor wear resistance) and to make it difficult to squeal (squeal characteristics). In addition, a long pad life (wear resistance) is required. Further, durability performance is required, such as not causing shear fracture during high-load braking (shear strength) and not causing cracks in the friction material due to high-temperature braking history (crack resistance).
摩擦材には、結合材、繊維基材、無機充填材及び有機充填材などが含まれ、前記特性を発現させるために、一般的に、それぞれ１種もしくは２種以上を組み合わせたものが含まれる。繊維基材としては、有機繊維、金属繊維、無機繊維などが用いられ、耐クラック性、耐摩耗性を向上させるために、金属繊維として銅や銅合金の繊維が一般的に用いられる。さらに、耐摩耗性を向上させるために銅や銅合金のチップや粉末が用いられることもある。また、摩擦材として、ノンアスベスト摩擦材が主流となっており、このノンアスベスト摩擦材には銅や銅合金などが多量に使用されている。
しかし、銅や銅合金を含有する摩擦材は、制動時に生成する摩耗粉に銅を含み、河川、湖や海洋汚染などの原因となる可能性が示唆されている。
そこで、銅や銅合金などの金属を含まずに、摩擦係数、耐摩耗性、ローター摩耗が良好な摩擦材を提供する目的で、繊維基材、結合材及び摩擦調整成分を含むブレーキ用摩擦材として、重金属や重金属化合物を含有せず、酸化マグネシウムと黒鉛を摩擦材中に４５～８０体積％含有し、酸化マグネシウムと黒鉛の比を１／１～４／１とする方法が提案されている（特許文献１）。 The friction material includes a binder, a fiber base material, an inorganic filler, an organic filler, and the like, and generally includes one or a combination of two or more in order to exhibit the above characteristics. . As the fiber base material, organic fiber, metal fiber, inorganic fiber, or the like is used. In order to improve crack resistance and wear resistance, copper or copper alloy fiber is generally used as the metal fiber. Furthermore, in order to improve wear resistance, a chip or powder of copper or copper alloy may be used. Non-asbestos friction materials are mainly used as friction materials, and copper, copper alloys, and the like are used in large amounts for the non-asbestos friction materials.
However, it has been suggested that friction materials containing copper or a copper alloy contain copper in wear powder generated during braking, which may cause river, lake, marine pollution, and the like.
Therefore, for the purpose of providing a friction material having good friction coefficient, wear resistance, and rotor wear without including metals such as copper and copper alloys, a friction material for brakes including a fiber base material, a binder, and a friction adjusting component. A method is proposed in which magnesium oxide and graphite are contained in a friction material in an amount of 45 to 80% by volume and the ratio of magnesium oxide and graphite is 1/1 to 4/1 without containing a heavy metal or a heavy metal compound. (Patent Document 1).
しかし、銅や銅合金を含有する摩擦材は、制動時に生成する摩耗粉に銅を含み、河川、湖や海洋汚染などの原因となる可能性が示唆されている。
そこで、銅や銅合金などの金属を含まずに、摩擦係数、耐摩耗性、ローター摩耗が良好な摩擦材を提供する目的で、繊維基材、結合材及び摩擦調整成分を含むブレーキ用摩擦材として、重金属や重金属化合物を含有せず、酸化マグネシウムと黒鉛を摩擦材中に４５～８０体積％含有し、酸化マグネシウムと黒鉛の比を１／１～４／１とする方法が提案されている（特許文献１）。 The friction material includes a binder, a fiber base material, an inorganic filler, an organic filler, and the like, and generally includes one or a combination of two or more in order to exhibit the above characteristics. . As the fiber base material, organic fiber, metal fiber, inorganic fiber, or the like is used. In order to improve crack resistance and wear resistance, copper or copper alloy fiber is generally used as the metal fiber. Furthermore, in order to improve wear resistance, a chip or powder of copper or copper alloy may be used. Non-asbestos friction materials are mainly used as friction materials, and copper, copper alloys, and the like are used in large amounts for the non-asbestos friction materials.
However, it has been suggested that friction materials containing copper or a copper alloy contain copper in wear powder generated during braking, which may cause river, lake, marine pollution, and the like.
Therefore, for the purpose of providing a friction material having good friction coefficient, wear resistance, and rotor wear without including metals such as copper and copper alloys, a friction material for brakes including a fiber base material, a binder, and a friction adjusting component. A method is proposed in which magnesium oxide and graphite are contained in a friction material in an amount of 45 to 80% by volume and the ratio of magnesium oxide and graphite is 1/1 to 4/1 without containing a heavy metal or a heavy metal compound. (Patent Document 1).
しかしながら、特許文献１のブレーキ用摩擦材では、摩擦係数、耐クラック性、耐摩耗性の全てに優れた摩擦材を得ることは困難である。
一方、摩擦材に含まれる銅以外の金属繊維として、スチール繊維や鋳鉄繊維などの鉄系繊維が耐クラック性改善の目的で用いられるが、鉄系繊維は対面材の攻撃性が高いという欠点があり、また亜鉛繊維やアルミニウム繊維などの銅以外で一般的に摩擦材に用いられる非鉄金属繊維は、銅や鉄系繊維と比較して耐熱温度が低いものが多く、摩擦材の耐摩耗性を悪化させるという問題がある。また、摩擦材の耐クラック性を向上するための方法として無機繊維が用いられる。しかし十分な耐クラック性を得るためには、多量の無機繊維を添加する必要があり、多量の無機繊維を用いれば耐クラック性は改善できるものの、耐摩耗性が悪化してしまうという問題が生じる。 However, with the brake friction material of Patent Document 1, it is difficult to obtain a friction material that is excellent in all of the friction coefficient, crack resistance, and wear resistance.
On the other hand, as metal fibers other than copper contained in the friction material, iron fibers such as steel fibers and cast iron fibers are used for the purpose of improving crack resistance. However, iron fibers have a drawback that the facing material is highly aggressive. There are many non-ferrous metal fibers that are generally used for friction materials other than copper, such as zinc fibers and aluminum fibers. There is a problem of making it worse. In addition, inorganic fibers are used as a method for improving the crack resistance of the friction material. However, in order to obtain sufficient crack resistance, it is necessary to add a large amount of inorganic fiber, and if a large amount of inorganic fiber is used, crack resistance can be improved, but there is a problem that wear resistance deteriorates. .
一方、摩擦材に含まれる銅以外の金属繊維として、スチール繊維や鋳鉄繊維などの鉄系繊維が耐クラック性改善の目的で用いられるが、鉄系繊維は対面材の攻撃性が高いという欠点があり、また亜鉛繊維やアルミニウム繊維などの銅以外で一般的に摩擦材に用いられる非鉄金属繊維は、銅や鉄系繊維と比較して耐熱温度が低いものが多く、摩擦材の耐摩耗性を悪化させるという問題がある。また、摩擦材の耐クラック性を向上するための方法として無機繊維が用いられる。しかし十分な耐クラック性を得るためには、多量の無機繊維を添加する必要があり、多量の無機繊維を用いれば耐クラック性は改善できるものの、耐摩耗性が悪化してしまうという問題が生じる。 However, with the brake friction material of Patent Document 1, it is difficult to obtain a friction material that is excellent in all of the friction coefficient, crack resistance, and wear resistance.
On the other hand, as metal fibers other than copper contained in the friction material, iron fibers such as steel fibers and cast iron fibers are used for the purpose of improving crack resistance. However, iron fibers have a drawback that the facing material is highly aggressive. There are many non-ferrous metal fibers that are generally used for friction materials other than copper, such as zinc fibers and aluminum fibers. There is a problem of making it worse. In addition, inorganic fibers are used as a method for improving the crack resistance of the friction material. However, in order to obtain sufficient crack resistance, it is necessary to add a large amount of inorganic fiber, and if a large amount of inorganic fiber is used, crack resistance can be improved, but there is a problem that wear resistance deteriorates. .
また、黒鉛を用いると、摩擦材の耐摩耗性を向上できることが知られている。しかし十分な耐摩耗性を得るためには、多量に黒鉛を添加する必要があり、多量の黒鉛を用いれば耐摩耗性は改善できるものの、摩擦係数が大きく低下してしまうという問題が生じる。
前述したように、銅の含有量を少なくした摩擦材は、耐摩耗性や耐クラック性が悪く、摩擦係数、耐クラック性及び耐摩耗性の全てを満足させる優れた摩擦材を得ることは困難であった。 It is also known that the use of graphite can improve the wear resistance of the friction material. However, in order to obtain sufficient wear resistance, it is necessary to add a large amount of graphite. If a large amount of graphite is used, the wear resistance can be improved, but the friction coefficient is greatly reduced.
As described above, the friction material with a reduced copper content has poor wear resistance and crack resistance, and it is difficult to obtain an excellent friction material that satisfies all of the friction coefficient, crack resistance, and wear resistance. Met.
前述したように、銅の含有量を少なくした摩擦材は、耐摩耗性や耐クラック性が悪く、摩擦係数、耐クラック性及び耐摩耗性の全てを満足させる優れた摩擦材を得ることは困難であった。 It is also known that the use of graphite can improve the wear resistance of the friction material. However, in order to obtain sufficient wear resistance, it is necessary to add a large amount of graphite. If a large amount of graphite is used, the wear resistance can be improved, but the friction coefficient is greatly reduced.
As described above, the friction material with a reduced copper content has poor wear resistance and crack resistance, and it is difficult to obtain an excellent friction material that satisfies all of the friction coefficient, crack resistance, and wear resistance. Met.
このような背景を鑑み、本発明の課題は、河川、湖や海洋汚染などの原因となる可能性のある銅や銅合金の含有量が少なくても、摩擦係数、耐クラック性及び耐摩耗性に優れた摩擦材を与えることができるノンアスベスト摩擦材組成物、さらに該ノンアスベスト摩擦材組成物を用いた摩擦材及び摩擦部材を提供することである。
In view of such background, the problem of the present invention is that the friction coefficient, crack resistance and wear resistance are reduced even if the content of copper or copper alloy which may cause river, lake or marine pollution is small. It is to provide a non-asbestos friction material composition capable of providing an excellent friction material, and a friction material and a friction member using the non-asbestos friction material composition.
本発明者らは、鋭意検討を重ねた結果、ノンアスベスト摩擦材組成物において、銅及び金属繊維の含有量を一定以下とし、チタン酸リチウムカリウム及び黒鉛を含有することで、上記課題を解決できることを見出し、本発明を完成した。
すなわち、本発明は、下記のとおりである。 As a result of intensive studies, the present inventors have been able to solve the above-mentioned problems by containing copper and metal fibers in a non-asbestos friction material composition at a certain level or less and containing lithium potassium titanate and graphite. The present invention has been completed.
That is, the present invention is as follows.
すなわち、本発明は、下記のとおりである。 As a result of intensive studies, the present inventors have been able to solve the above-mentioned problems by containing copper and metal fibers in a non-asbestos friction material composition at a certain level or less and containing lithium potassium titanate and graphite. The present invention has been completed.
That is, the present invention is as follows.
１． 結合材、有機充填材、無機充填材及び繊維基材を含む摩擦材組成物であって、該摩擦材組成物中の銅の含有量が銅元素として５質量％以下であり、銅及び銅合金以外の金属繊維の含有量が０．５質量％以下であり、チタン酸リチウムカリウム及び黒鉛を含有することを特徴とするノンアスベスト摩擦材組成物。
２． 前記摩擦材組成物中の前記チタン酸リチウムカリウムの含有量が１～３０質量％である、上記１に記載のノンアスベスト摩擦材組成物。
３． 前記摩擦材組成物中の前記黒鉛の含有量が１～２０質量％である、上記１又は２に記載のノンアスベスト摩擦材組成物。
４． 上記１～３のいずれかに記載のノンアスベスト摩擦材組成物を成形してなる摩擦材。
５． 上記１～３のいずれかに記載のノンアスベスト摩擦材組成物を成形してなる摩擦材と裏金とを用いて形成される摩擦部材。 1. A friction material composition comprising a binder, an organic filler, an inorganic filler, and a fiber base material, wherein the copper content in the friction material composition is 5% by mass or less as a copper element, and copper and a copper alloy A non-asbestos friction material composition characterized in that the content of metal fibers other than is 0.5% by mass or less and contains lithium potassium titanate and graphite.
2. 2. The non-asbestos friction material composition according to 1 above, wherein the content of the lithium potassium titanate in the friction material composition is 1 to 30% by mass.
3. 3. The non-asbestos friction material composition according to 1 or 2 above, wherein the graphite content in the friction material composition is 1 to 20% by mass.
4). 4. A friction material obtained by molding the non-asbestos friction material composition according to any one of 1 to 3 above.
5. A friction member formed by using a friction material obtained by molding the non-asbestos friction material composition according to any one of 1 to 3 above and a back metal.
２． 前記摩擦材組成物中の前記チタン酸リチウムカリウムの含有量が１～３０質量％である、上記１に記載のノンアスベスト摩擦材組成物。
３． 前記摩擦材組成物中の前記黒鉛の含有量が１～２０質量％である、上記１又は２に記載のノンアスベスト摩擦材組成物。
４． 上記１～３のいずれかに記載のノンアスベスト摩擦材組成物を成形してなる摩擦材。
５． 上記１～３のいずれかに記載のノンアスベスト摩擦材組成物を成形してなる摩擦材と裏金とを用いて形成される摩擦部材。 1. A friction material composition comprising a binder, an organic filler, an inorganic filler, and a fiber base material, wherein the copper content in the friction material composition is 5% by mass or less as a copper element, and copper and a copper alloy A non-asbestos friction material composition characterized in that the content of metal fibers other than is 0.5% by mass or less and contains lithium potassium titanate and graphite.
2. 2. The non-asbestos friction material composition according to 1 above, wherein the content of the lithium potassium titanate in the friction material composition is 1 to 30% by mass.
3. 3. The non-asbestos friction material composition according to 1 or 2 above, wherein the graphite content in the friction material composition is 1 to 20% by mass.
4). 4. A friction material obtained by molding the non-asbestos friction material composition according to any one of 1 to 3 above.
5. A friction member formed by using a friction material obtained by molding the non-asbestos friction material composition according to any one of 1 to 3 above and a back metal.
本発明のノンアスベスト摩擦材組成物は、自動車用ディスクブレーキパッドやブレーキライニングなどの摩擦材に用いた際に、制動時に生成する摩耗粉中の銅が少ないことから環境汚染が少なく、かつ優れた摩擦係数、耐クラック性及び耐摩耗性を発現することができる。また、本発明のノンアスベスト摩擦材組成物を用いることにより、上記特性を有する摩擦材及び摩擦部材を提供できる。
The non-asbestos friction material composition of the present invention has less environmental pollution because it is used in friction materials such as automotive disc brake pads and brake linings, since there is less copper in the abrasion powder generated during braking, and it is excellent. A friction coefficient, crack resistance, and abrasion resistance can be expressed. Moreover, the friction material and friction member which have the said characteristic can be provided by using the non-asbestos friction material composition of this invention.
以下、本発明のノンアスベスト摩擦材組成物、これを用いた摩擦材及び摩擦部材について詳述する。
［ノンアスベスト摩擦材組成物］
本発明のノンアスベスト摩擦材組成物は、結合材、有機充填材、無機充填材及び繊維基材を含む摩擦材組成物であって、該摩擦材組成物中の銅の含有量が銅元素として５質量％以下であり、銅及び銅合金以外の金属繊維の含有量が０．５質量％以下であり、チタン酸リチウムカリウム及び黒鉛を含有することを特徴とする。
上記構成により、従来品と比較して制動時に生成する摩耗粉中の銅が少ないことから環境汚染が少なく、かつ優れた摩擦係数、耐クラック性、耐摩耗性を発現することができる。 Hereinafter, the non-asbestos friction material composition of the present invention, the friction material using the same, and the friction member will be described in detail.
[Non-asbestos friction material composition]
The non-asbestos friction material composition of the present invention is a friction material composition including a binder, an organic filler, an inorganic filler, and a fiber base material, and the copper content in the friction material composition is as a copper element. It is 5 mass% or less, content of metal fibers other than copper and a copper alloy is 0.5 mass% or less, and contains lithium potassium titanate and graphite.
With the above configuration, since there is less copper in the wear powder generated during braking than in the conventional product, environmental pollution is small, and excellent friction coefficient, crack resistance, and wear resistance can be expressed.
［ノンアスベスト摩擦材組成物］
本発明のノンアスベスト摩擦材組成物は、結合材、有機充填材、無機充填材及び繊維基材を含む摩擦材組成物であって、該摩擦材組成物中の銅の含有量が銅元素として５質量％以下であり、銅及び銅合金以外の金属繊維の含有量が０．５質量％以下であり、チタン酸リチウムカリウム及び黒鉛を含有することを特徴とする。
上記構成により、従来品と比較して制動時に生成する摩耗粉中の銅が少ないことから環境汚染が少なく、かつ優れた摩擦係数、耐クラック性、耐摩耗性を発現することができる。 Hereinafter, the non-asbestos friction material composition of the present invention, the friction material using the same, and the friction member will be described in detail.
[Non-asbestos friction material composition]
The non-asbestos friction material composition of the present invention is a friction material composition including a binder, an organic filler, an inorganic filler, and a fiber base material, and the copper content in the friction material composition is as a copper element. It is 5 mass% or less, content of metal fibers other than copper and a copper alloy is 0.5 mass% or less, and contains lithium potassium titanate and graphite.
With the above configuration, since there is less copper in the wear powder generated during braking than in the conventional product, environmental pollution is small, and excellent friction coefficient, crack resistance, and wear resistance can be expressed.
（結合材）
結合材は、摩擦材組成物に含まれる有機充填材、無機充填材及び繊維基材などを一体化し、強度を与えるものである。本発明のノンアスベスト摩擦材組成物に含まれる結合材としては特に制限はなく、通常、摩擦材の結合材として用いられる熱硬化性樹脂を用いることができる。
上記熱硬化性樹脂としては、例えば、フェノール樹脂；アクリルエラストマー分散フェノール樹脂及びシリコーンエラストマー分散フェノール樹脂などの各種エラストマー分散フェノール樹脂；アクリル変性フェノール樹脂、シリコーン変性フェノール樹脂、カシュー変性フェノール樹脂、エポキシ変性フェノール樹脂及びアルキルベンゼン変性フェノール樹脂などの各種変性フェノール樹脂などが挙げられ、これらを単独で又は２種類以上を組み合わせて使用することができる。特に、良好な耐熱性、成形性及び摩擦係数を与えることから、フェノール樹脂、アクリル変性フェノール樹脂、シリコーン変性フェノール樹脂、アルキルベンゼン変性フェノール樹脂を用いることが好ましい。 (Binder)
The binding material integrates an organic filler, an inorganic filler, a fiber base, and the like contained in the friction material composition to give strength. There is no restriction | limiting in particular as a binder contained in the non-asbestos friction material composition of this invention, Usually, the thermosetting resin used as a binder of a friction material can be used.
Examples of the thermosetting resins include phenol resins; various elastomer-dispersed phenol resins such as acrylic elastomer-dispersed phenol resins and silicone elastomer-dispersed phenol resins; acrylic-modified phenol resins, silicone-modified phenol resins, cashew-modified phenol resins, and epoxy-modified phenols. Various modified phenol resins such as resins and alkylbenzene-modified phenol resins can be used, and these can be used alone or in combination of two or more. In particular, it is preferable to use a phenol resin, an acrylic-modified phenol resin, a silicone-modified phenol resin, or an alkylbenzene-modified phenol resin because good heat resistance, moldability, and friction coefficient are given.
結合材は、摩擦材組成物に含まれる有機充填材、無機充填材及び繊維基材などを一体化し、強度を与えるものである。本発明のノンアスベスト摩擦材組成物に含まれる結合材としては特に制限はなく、通常、摩擦材の結合材として用いられる熱硬化性樹脂を用いることができる。
上記熱硬化性樹脂としては、例えば、フェノール樹脂；アクリルエラストマー分散フェノール樹脂及びシリコーンエラストマー分散フェノール樹脂などの各種エラストマー分散フェノール樹脂；アクリル変性フェノール樹脂、シリコーン変性フェノール樹脂、カシュー変性フェノール樹脂、エポキシ変性フェノール樹脂及びアルキルベンゼン変性フェノール樹脂などの各種変性フェノール樹脂などが挙げられ、これらを単独で又は２種類以上を組み合わせて使用することができる。特に、良好な耐熱性、成形性及び摩擦係数を与えることから、フェノール樹脂、アクリル変性フェノール樹脂、シリコーン変性フェノール樹脂、アルキルベンゼン変性フェノール樹脂を用いることが好ましい。 (Binder)
The binding material integrates an organic filler, an inorganic filler, a fiber base, and the like contained in the friction material composition to give strength. There is no restriction | limiting in particular as a binder contained in the non-asbestos friction material composition of this invention, Usually, the thermosetting resin used as a binder of a friction material can be used.
Examples of the thermosetting resins include phenol resins; various elastomer-dispersed phenol resins such as acrylic elastomer-dispersed phenol resins and silicone elastomer-dispersed phenol resins; acrylic-modified phenol resins, silicone-modified phenol resins, cashew-modified phenol resins, and epoxy-modified phenols. Various modified phenol resins such as resins and alkylbenzene-modified phenol resins can be used, and these can be used alone or in combination of two or more. In particular, it is preferable to use a phenol resin, an acrylic-modified phenol resin, a silicone-modified phenol resin, or an alkylbenzene-modified phenol resin because good heat resistance, moldability, and friction coefficient are given.
本発明のノンアスベスト摩擦材組成物中における、結合材の含有量は、５～２０質量％であることが好ましく、５～１０質量％であることがより好ましい。結合材の含有量を５～２０質量％の範囲とすることで、摩擦材の強度低下をより抑制でき、また、摩擦材の気孔率が減少し、弾性率が高くなることによる鳴きなどの音振性能悪化を抑制できる。
The content of the binder in the non-asbestos friction material composition of the present invention is preferably 5 to 20% by mass, more preferably 5 to 10% by mass. By setting the binder content in the range of 5 to 20% by mass, the strength of the friction material can be further suppressed, and the porosity of the friction material is reduced and noise such as squeal due to an increase in elastic modulus. Vibration performance deterioration can be suppressed.
（有機充填材）
有機充填材は、摩擦材の音振性能や耐摩耗性などを向上させるための摩擦調整剤として含まれるものである。本発明のノンアスベスト摩擦材組成物に含まれる有機充填材としては、上記性能を発揮できるものであれば特に制限はなく、通常、有機充填材として用いられる、カシューダストやゴム成分などを用いることができる。
上記カシューダストは、カシューナッツシェルオイルを硬化させたものを粉砕して得られる、通常、摩擦材に用いられるものであればよい。
上記ゴム成分としては、例えば、天然ゴム、アクリルゴム、イソプレンゴム、ポリブタジエンゴム（ＢＲ）、ニトリル－ブタジエンゴム（ＮＢＲ）、スチレン－ブタジエンゴム（ＳＢＲ）などが挙げられ、これらを単独で又は２種類以上を組み合わせて使用される。また、カシューダストとゴム成分とを併用してもよく、カシューダストをゴム成分で被覆したものを用いてもよい。音振性能の観点から、カシューダストとゴム成分とを併用することが好ましい。 (Organic filler)
The organic filler is included as a friction modifier for improving the sound vibration performance and wear resistance of the friction material. The organic filler contained in the non-asbestos friction material composition of the present invention is not particularly limited as long as it can exhibit the above performance, and usually uses cashew dust, rubber components, etc., which are used as an organic filler. Can do.
The cashew dust is not particularly limited as long as it is obtained by pulverizing a hardened cashew nut shell oil and is usually used for a friction material.
Examples of the rubber component include natural rubber, acrylic rubber, isoprene rubber, polybutadiene rubber (BR), nitrile-butadiene rubber (NBR), and styrene-butadiene rubber (SBR). These may be used alone or in two types. Used in combination. Cashew dust and a rubber component may be used in combination, or cashew dust coated with a rubber component may be used. From the viewpoint of sound vibration performance, it is preferable to use cashew dust and a rubber component in combination.
有機充填材は、摩擦材の音振性能や耐摩耗性などを向上させるための摩擦調整剤として含まれるものである。本発明のノンアスベスト摩擦材組成物に含まれる有機充填材としては、上記性能を発揮できるものであれば特に制限はなく、通常、有機充填材として用いられる、カシューダストやゴム成分などを用いることができる。
上記カシューダストは、カシューナッツシェルオイルを硬化させたものを粉砕して得られる、通常、摩擦材に用いられるものであればよい。
上記ゴム成分としては、例えば、天然ゴム、アクリルゴム、イソプレンゴム、ポリブタジエンゴム（ＢＲ）、ニトリル－ブタジエンゴム（ＮＢＲ）、スチレン－ブタジエンゴム（ＳＢＲ）などが挙げられ、これらを単独で又は２種類以上を組み合わせて使用される。また、カシューダストとゴム成分とを併用してもよく、カシューダストをゴム成分で被覆したものを用いてもよい。音振性能の観点から、カシューダストとゴム成分とを併用することが好ましい。 (Organic filler)
The organic filler is included as a friction modifier for improving the sound vibration performance and wear resistance of the friction material. The organic filler contained in the non-asbestos friction material composition of the present invention is not particularly limited as long as it can exhibit the above performance, and usually uses cashew dust, rubber components, etc., which are used as an organic filler. Can do.
The cashew dust is not particularly limited as long as it is obtained by pulverizing a hardened cashew nut shell oil and is usually used for a friction material.
Examples of the rubber component include natural rubber, acrylic rubber, isoprene rubber, polybutadiene rubber (BR), nitrile-butadiene rubber (NBR), and styrene-butadiene rubber (SBR). These may be used alone or in two types. Used in combination. Cashew dust and a rubber component may be used in combination, or cashew dust coated with a rubber component may be used. From the viewpoint of sound vibration performance, it is preferable to use cashew dust and a rubber component in combination.
本発明のノンアスベスト摩擦材組成物中における、有機充填材の含有量は、１～２０質量％であることが好ましく、１～１０質量％であることがより好ましく、５～１０質量％であることが特に好ましい。有機充填材の含有量を１～２０質量％の範囲とすることで、摩擦材の弾性率が高くなること、鳴きなどの音振性能の悪化を避けることができ、また耐熱性の悪化、熱履歴による強度低下を避けることができる。また、カシューダストとゴム成分とを併用する場合、カシューダストとゴム成分とは、質量比で２：１～１０：１の割合であることが好ましく、２：１～８：１であることがより好ましく、３：１～８：１であることが特に好ましい。
The content of the organic filler in the non-asbestos friction material composition of the present invention is preferably 1 to 20% by mass, more preferably 1 to 10% by mass, and 5 to 10% by mass. It is particularly preferred. By setting the content of the organic filler in the range of 1 to 20% by mass, the elastic modulus of the friction material can be increased, deterioration of sound vibration performance such as squeal can be avoided, heat resistance deterioration, heat It is possible to avoid a decrease in strength due to history. When cashew dust and a rubber component are used in combination, the cashew dust and the rubber component are preferably in a mass ratio of 2: 1 to 10: 1, and preferably 2: 1 to 8: 1. More preferred is 3: 1 to 8: 1.
（無機充填材）
無機充填材は、摩擦材の耐熱性の悪化を避けるための摩擦調整剤として含まれるものである。
本発明のノンアスベスト摩擦材組成物は、無機充填剤としてチタン酸リチウムカリウム及び黒鉛を含有する。
上記チタン酸リチウムカリウムとしては、通常、摩擦材に用いられるものであれば特に制限はない。例えば、チタン源とリチウム源とカリウム源とを混合して製造したＫ0.5-0.7Ｌｉ0.27Ｔｉ1.73Ｏ3.85-3.95で表される組成のものなどが挙げられる。
また、摩擦係数向上の観点から平均粒径が１～１０μｍのものが好ましく、１～８μｍのものがより好ましく、１～７μｍのものが特に好ましい。環境物質低減の観点から形状が柱状、板状、鱗片状などのものが好ましい。
本発明のノンアスベスト摩擦材組成物中における、チタン酸リチウムカリウムの含有量は、１～３０質量％であることが好ましく、１～２８質量％であることがより好ましく、１～２０質量％であることが特に好ましい。チタン酸リチウムカリウムの含有量を１質量％以上とすることで、良好な摩擦係数、耐クラック性、耐摩耗性が発現し、３０質量％以下とすることで、耐摩耗性の悪化を避けることができる。 (Inorganic filler)
The inorganic filler is included as a friction modifier for avoiding deterioration of the heat resistance of the friction material.
The non-asbestos friction material composition of the present invention contains lithium potassium titanate and graphite as inorganic fillers.
The lithium potassium titanate is not particularly limited as long as it is usually used for a friction material. For example, the composition represented by K 0.5-0.7 Li 0.27 Ti 1.73 O 3.85-3.95 produced by mixing a titanium source, a lithium source and a potassium source can be used.
From the viewpoint of improving the friction coefficient, the average particle size is preferably 1 to 10 μm, more preferably 1 to 8 μm, and particularly preferably 1 to 7 μm. From the viewpoint of reducing environmental substances, the shape is preferably columnar, plate-like, or scale-like.
The content of lithium potassium titanate in the non-asbestos friction material composition of the present invention is preferably 1 to 30% by mass, more preferably 1 to 28% by mass, and 1 to 20% by mass. It is particularly preferred. By setting the content of lithium potassium titanate to 1% by mass or more, a good friction coefficient, crack resistance, and wear resistance are exhibited, and by setting the content to 30% by mass or less, deterioration of wear resistance is avoided. Can do.
無機充填材は、摩擦材の耐熱性の悪化を避けるための摩擦調整剤として含まれるものである。
本発明のノンアスベスト摩擦材組成物は、無機充填剤としてチタン酸リチウムカリウム及び黒鉛を含有する。
上記チタン酸リチウムカリウムとしては、通常、摩擦材に用いられるものであれば特に制限はない。例えば、チタン源とリチウム源とカリウム源とを混合して製造したＫ0.5-0.7Ｌｉ0.27Ｔｉ1.73Ｏ3.85-3.95で表される組成のものなどが挙げられる。
また、摩擦係数向上の観点から平均粒径が１～１０μｍのものが好ましく、１～８μｍのものがより好ましく、１～７μｍのものが特に好ましい。環境物質低減の観点から形状が柱状、板状、鱗片状などのものが好ましい。
本発明のノンアスベスト摩擦材組成物中における、チタン酸リチウムカリウムの含有量は、１～３０質量％であることが好ましく、１～２８質量％であることがより好ましく、１～２０質量％であることが特に好ましい。チタン酸リチウムカリウムの含有量を１質量％以上とすることで、良好な摩擦係数、耐クラック性、耐摩耗性が発現し、３０質量％以下とすることで、耐摩耗性の悪化を避けることができる。 (Inorganic filler)
The inorganic filler is included as a friction modifier for avoiding deterioration of the heat resistance of the friction material.
The non-asbestos friction material composition of the present invention contains lithium potassium titanate and graphite as inorganic fillers.
The lithium potassium titanate is not particularly limited as long as it is usually used for a friction material. For example, the composition represented by K 0.5-0.7 Li 0.27 Ti 1.73 O 3.85-3.95 produced by mixing a titanium source, a lithium source and a potassium source can be used.
From the viewpoint of improving the friction coefficient, the average particle size is preferably 1 to 10 μm, more preferably 1 to 8 μm, and particularly preferably 1 to 7 μm. From the viewpoint of reducing environmental substances, the shape is preferably columnar, plate-like, or scale-like.
The content of lithium potassium titanate in the non-asbestos friction material composition of the present invention is preferably 1 to 30% by mass, more preferably 1 to 28% by mass, and 1 to 20% by mass. It is particularly preferred. By setting the content of lithium potassium titanate to 1% by mass or more, a good friction coefficient, crack resistance, and wear resistance are exhibited, and by setting the content to 30% by mass or less, deterioration of wear resistance is avoided. Can do.
上記黒鉛としては、天然黒鉛又は各種の人造黒鉛のいずれも用いることができ、通常、摩擦材に用いられるものであれば特に制限はない。天然黒鉛としては、土状黒鉛、鱗状黒鉛及び鱗片状黒鉛などが挙げられ、人造黒鉛としては通常石油コークスや石炭系ピッチコークスを主原料として黒鉛化処理により製造されたもので、キッシュ黒鉛、分解黒鉛及び熱分解黒鉛などが挙げられる。また、摩擦係数向上の観点から平均粒径が０．１～１００μｍのものが好ましく、１．０～８０μｍのものがより好ましく、１．０～５０μｍのものが特に好ましい。
本発明のノンアスベスト摩擦材組成物中における、黒鉛の含有量は、１～２０質量％であることが好ましく、１～１８質量％であることがより好ましく、１～１５質量％であることが特に好ましい。黒鉛の含有量を１質量％以上とすることで、良好な摩擦係数、耐クラック性、耐摩耗性が発現し、２０質量％以下とすることで、摩擦係数の低下を避けることができる。 As the graphite, either natural graphite or various artificial graphites can be used, and there is no particular limitation as long as it is usually used for a friction material. Examples of natural graphite include earthy graphite, scale-like graphite, and scale-like graphite. Artificial graphite is usually produced by graphitization treatment using petroleum coke or coal-based pitch coke as the main raw material. Examples include graphite and pyrolytic graphite. From the viewpoint of improving the friction coefficient, the average particle size is preferably 0.1 to 100 μm, more preferably 1.0 to 80 μm, and particularly preferably 1.0 to 50 μm.
The content of graphite in the non-asbestos friction material composition of the present invention is preferably 1 to 20% by mass, more preferably 1 to 18% by mass, and preferably 1 to 15% by mass. Particularly preferred. By setting the graphite content to 1% by mass or more, good friction coefficient, crack resistance, and wear resistance are exhibited, and by setting the content to 20% by mass or less, a decrease in the friction coefficient can be avoided.
本発明のノンアスベスト摩擦材組成物中における、黒鉛の含有量は、１～２０質量％であることが好ましく、１～１８質量％であることがより好ましく、１～１５質量％であることが特に好ましい。黒鉛の含有量を１質量％以上とすることで、良好な摩擦係数、耐クラック性、耐摩耗性が発現し、２０質量％以下とすることで、摩擦係数の低下を避けることができる。 As the graphite, either natural graphite or various artificial graphites can be used, and there is no particular limitation as long as it is usually used for a friction material. Examples of natural graphite include earthy graphite, scale-like graphite, and scale-like graphite. Artificial graphite is usually produced by graphitization treatment using petroleum coke or coal-based pitch coke as the main raw material. Examples include graphite and pyrolytic graphite. From the viewpoint of improving the friction coefficient, the average particle size is preferably 0.1 to 100 μm, more preferably 1.0 to 80 μm, and particularly preferably 1.0 to 50 μm.
The content of graphite in the non-asbestos friction material composition of the present invention is preferably 1 to 20% by mass, more preferably 1 to 18% by mass, and preferably 1 to 15% by mass. Particularly preferred. By setting the graphite content to 1% by mass or more, good friction coefficient, crack resistance, and wear resistance are exhibited, and by setting the content to 20% by mass or less, a decrease in the friction coefficient can be avoided.
本発明のノンアスベスト摩擦材組成物は、上記チタン酸リチウムカリウム及び黒鉛以外の無機充填材をさらに含有することができ、通常、摩擦材に用いられる無機充填剤であれば特に制限はない。
上記無機充填材としては、例えば、三硫化アンチモン、硫化錫、二硫化モリブデン、硫化鉄、硫化ビスマス、硫化亜鉛、水酸化カルシウム、酸化カルシウム、炭酸ナトリウム、炭酸カルシウム、炭酸マグネシウム、硫酸バリウム、ドロマイト、コークス、マイカ、酸化鉄、バーミキュライト、硫酸カルシウム、粒状チタン酸カリウム、板状チタン酸カリウム、タルク、クレー、ゼオライト、ケイ酸ジルコニウム、酸化ジルコニウム、ムライト、クロマイト、酸化チタン、酸化マグネシウム、シリカ、酸化鉄、γ－アルミナなどの活性アルミナなどを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 The non-asbestos friction material composition of the present invention can further contain an inorganic filler other than the above lithium potassium titanate and graphite, and is not particularly limited as long as it is an inorganic filler usually used for a friction material.
Examples of the inorganic filler include antimony trisulfide, tin sulfide, molybdenum disulfide, iron sulfide, bismuth sulfide, zinc sulfide, calcium hydroxide, calcium oxide, sodium carbonate, calcium carbonate, magnesium carbonate, barium sulfate, dolomite, Coke, mica, iron oxide, vermiculite, calcium sulfate, granular potassium titanate, plate-like potassium titanate, talc, clay, zeolite, zirconium silicate, zirconium oxide, mullite, chromite, titanium oxide, magnesium oxide, silica, iron oxide , Activated alumina such as γ-alumina can be used, and these can be used alone or in combination of two or more.
上記無機充填材としては、例えば、三硫化アンチモン、硫化錫、二硫化モリブデン、硫化鉄、硫化ビスマス、硫化亜鉛、水酸化カルシウム、酸化カルシウム、炭酸ナトリウム、炭酸カルシウム、炭酸マグネシウム、硫酸バリウム、ドロマイト、コークス、マイカ、酸化鉄、バーミキュライト、硫酸カルシウム、粒状チタン酸カリウム、板状チタン酸カリウム、タルク、クレー、ゼオライト、ケイ酸ジルコニウム、酸化ジルコニウム、ムライト、クロマイト、酸化チタン、酸化マグネシウム、シリカ、酸化鉄、γ－アルミナなどの活性アルミナなどを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 The non-asbestos friction material composition of the present invention can further contain an inorganic filler other than the above lithium potassium titanate and graphite, and is not particularly limited as long as it is an inorganic filler usually used for a friction material.
Examples of the inorganic filler include antimony trisulfide, tin sulfide, molybdenum disulfide, iron sulfide, bismuth sulfide, zinc sulfide, calcium hydroxide, calcium oxide, sodium carbonate, calcium carbonate, magnesium carbonate, barium sulfate, dolomite, Coke, mica, iron oxide, vermiculite, calcium sulfate, granular potassium titanate, plate-like potassium titanate, talc, clay, zeolite, zirconium silicate, zirconium oxide, mullite, chromite, titanium oxide, magnesium oxide, silica, iron oxide , Activated alumina such as γ-alumina can be used, and these can be used alone or in combination of two or more.
本発明のノンアスベスト摩擦材組成物中における、チタン酸リチウムカリウム及び黒鉛以外の無機充填材の含有量は、３０～８０質量％であることが好ましく、４０～８０質量％であることがより好ましく、４０～７５質量％であることが特に好ましい。無機充填材の含有量を３０～８０質量％の範囲とすることで、耐熱性の悪化を避けることができ、摩擦材のその他成分の含有量バランスの点でも好ましい。
The content of the inorganic filler other than lithium potassium titanate and graphite in the non-asbestos friction material composition of the present invention is preferably 30 to 80% by mass, and more preferably 40 to 80% by mass. 40 to 75% by mass is particularly preferable. By setting the content of the inorganic filler in the range of 30 to 80% by mass, deterioration of heat resistance can be avoided, and this is preferable in terms of the balance of the content of other components of the friction material.
（繊維基材）
繊維基材は、摩擦材において補強作用を示すものである。本発明のノンアスベスト摩擦材組成物に含まれる繊維基材としては、上記性能を発揮できるものであれば特に制限はなく、通常、繊維基材として用いられる、金属繊維、無機繊維、有機繊維、炭素系繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 (Fiber base)
The fiber base material exhibits a reinforcing action in the friction material. The fiber base material contained in the non-asbestos friction material composition of the present invention is not particularly limited as long as it can exhibit the above performance, and is usually used as a fiber base material, metal fiber, inorganic fiber, organic fiber, Carbon-based fibers can be used, and these can be used alone or in combination of two or more.
繊維基材は、摩擦材において補強作用を示すものである。本発明のノンアスベスト摩擦材組成物に含まれる繊維基材としては、上記性能を発揮できるものであれば特に制限はなく、通常、繊維基材として用いられる、金属繊維、無機繊維、有機繊維、炭素系繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 (Fiber base)
The fiber base material exhibits a reinforcing action in the friction material. The fiber base material contained in the non-asbestos friction material composition of the present invention is not particularly limited as long as it can exhibit the above performance, and is usually used as a fiber base material, metal fiber, inorganic fiber, organic fiber, Carbon-based fibers can be used, and these can be used alone or in combination of two or more.
上記金属繊維としては、耐クラック性や耐摩耗性の向上のため、銅又は銅合金の繊維を用いることができる。ただし、本発明のノンアスベスト摩擦材組成物に銅又は銅合金の繊維を含有させる場合、耐環境汚染の観点から、該摩擦材組成物中における、銅全体の含有量が、銅元素として５質量％以下であることを要し、０．５質量％以下であることが好ましい。
銅又は銅合金の繊維としては、銅繊維、黄銅繊維、青銅繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 As the metal fibers, copper or copper alloy fibers can be used to improve crack resistance and wear resistance. However, when the copper or copper alloy fiber is contained in the non-asbestos friction material composition of the present invention, the content of the entire copper in the friction material composition is 5 mass as a copper element from the viewpoint of environmental pollution resistance. % Or less, and preferably 0.5% by mass or less.
As the fiber of copper or copper alloy, copper fiber, brass fiber, bronze fiber, or the like can be used, and these can be used alone or in combination of two or more.
銅又は銅合金の繊維としては、銅繊維、黄銅繊維、青銅繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 As the metal fibers, copper or copper alloy fibers can be used to improve crack resistance and wear resistance. However, when the copper or copper alloy fiber is contained in the non-asbestos friction material composition of the present invention, the content of the entire copper in the friction material composition is 5 mass as a copper element from the viewpoint of environmental pollution resistance. % Or less, and preferably 0.5% by mass or less.
As the fiber of copper or copper alloy, copper fiber, brass fiber, bronze fiber, or the like can be used, and these can be used alone or in combination of two or more.
また、上記金属繊維として、摩擦係数の向上、耐クラック性の観点から、本発明のノンアスベスト摩擦材組成物に銅及び銅合金以外の金属繊維を用いてもよいが、耐摩耗性の悪化を避ける観点から、含有量は０．５質量％以下であることを要する。一方で、銅及び銅合金以外の金属繊維は摩擦係数を向上させる割には耐摩耗性が悪化しやすいため、好ましくは銅及び銅合金以外の金属繊維を含有しないこと（含有量０質量％）である。
銅及び銅合金以外の金属繊維としては、例えば、アルミニウム、鉄、亜鉛、錫、チタン、ニッケル、マグネシウム、シリコンなどの金属単体又は合金形態の繊維や、鋳鉄繊維などの金属を主成分とする繊維が挙げられ、これらを単独で又は２種類以上を組み合わせて使用することができる。 In addition, as the metal fiber, from the viewpoint of improving the friction coefficient and crack resistance, metal fibers other than copper and copper alloy may be used in the non-asbestos friction material composition of the present invention, but the wear resistance is deteriorated. From the viewpoint of avoidance, the content needs to be 0.5% by mass or less. On the other hand, since metal fibers other than copper and copper alloys tend to deteriorate the wear resistance for improving the friction coefficient, preferably no metal fibers other than copper and copper alloys are contained (content 0 mass%). It is.
Examples of metal fibers other than copper and copper alloys include, for example, fibers in the form of simple metals or alloys such as aluminum, iron, zinc, tin, titanium, nickel, magnesium, and silicon, and fibers mainly composed of metals such as cast iron fibers. These can be used alone or in combination of two or more.
銅及び銅合金以外の金属繊維としては、例えば、アルミニウム、鉄、亜鉛、錫、チタン、ニッケル、マグネシウム、シリコンなどの金属単体又は合金形態の繊維や、鋳鉄繊維などの金属を主成分とする繊維が挙げられ、これらを単独で又は２種類以上を組み合わせて使用することができる。 In addition, as the metal fiber, from the viewpoint of improving the friction coefficient and crack resistance, metal fibers other than copper and copper alloy may be used in the non-asbestos friction material composition of the present invention, but the wear resistance is deteriorated. From the viewpoint of avoidance, the content needs to be 0.5% by mass or less. On the other hand, since metal fibers other than copper and copper alloys tend to deteriorate the wear resistance for improving the friction coefficient, preferably no metal fibers other than copper and copper alloys are contained (content 0 mass%). It is.
Examples of metal fibers other than copper and copper alloys include, for example, fibers in the form of simple metals or alloys such as aluminum, iron, zinc, tin, titanium, nickel, magnesium, and silicon, and fibers mainly composed of metals such as cast iron fibers. These can be used alone or in combination of two or more.
上記無機繊維としては、セラミック繊維、生分解性セラミック繊維、鉱物繊維、ガラス繊維、チタン酸カリウム繊維、シリケート繊維、ウォラストナイトなどを用いることができ、１種又は２種以上を組み合わせて用いることができる。
なお、環境物質低減の観点で、肺などに吸引されるような吸引性のチタン酸カリウム繊維やセラミック繊維を含有しないことが好ましい。 As the inorganic fiber, ceramic fiber, biodegradable ceramic fiber, mineral fiber, glass fiber, potassium titanate fiber, silicate fiber, wollastonite and the like can be used, and one or a combination of two or more types can be used. Can do.
From the viewpoint of reducing environmental substances, it is preferable not to contain an absorptive potassium titanate fiber or ceramic fiber that is attracted to the lung or the like.
なお、環境物質低減の観点で、肺などに吸引されるような吸引性のチタン酸カリウム繊維やセラミック繊維を含有しないことが好ましい。 As the inorganic fiber, ceramic fiber, biodegradable ceramic fiber, mineral fiber, glass fiber, potassium titanate fiber, silicate fiber, wollastonite and the like can be used, and one or a combination of two or more types can be used. Can do.
From the viewpoint of reducing environmental substances, it is preferable not to contain an absorptive potassium titanate fiber or ceramic fiber that is attracted to the lung or the like.
本発明において用いることのできる鉱物繊維とは、スラグウールなどの高炉スラグ、バサルトファイバーなどの玄武岩、その他の天然岩石などを主成分として溶融紡糸した人造無機繊維であり、Ａｌ元素を含む天然鉱物であることがより好ましい。具体的には、ＳｉＯ2、Ａｌ2Ｏ3、ＣａＯ、ＭｇＯ、ＦｅＯ、Ｎａ2Ｏなどが含まれるもの、又はこれら化合物が１種又は２種以上含有されるものを用いることができ、より好ましくはこれらのうちＡｌ元素を含むものが、鉱物繊維として用いることができる。摩擦材組成物中に含まれる鉱物繊維全体の平均繊維長が大きくなるほど摩擦組成物中の各成分との接着強度が低下する傾向があるため、鉱物繊維全体の平均繊維長は５００μｍ以下が好ましく、より好ましくは１００～４００μｍである。ここで、平均繊維長とは、該当する全ての繊維の長さの平均値を示した数平均繊維長のことをいう。例えば２００μｍの平均繊維長とは、摩擦材組成物原料として用いる鉱物繊維を無作為に５０個選択し、光学顕微鏡で繊維長を測定し、その平均値が２００μｍであることを示す。
Mineral fibers that can be used in the present invention are artificial inorganic fibers melt-spun mainly composed of blast furnace slag such as slag wool, basalt such as basalt fiber, and other natural rocks, and are natural minerals containing Al elements. More preferably. Specifically, those containing SiO 2 , Al 2 O 3 , CaO, MgO, FeO, Na 2 O, etc., or those containing one or more of these compounds can be used, more preferably. Of these, those containing Al element can be used as mineral fibers. Since the adhesive strength with each component in the friction composition tends to decrease as the average fiber length of the entire mineral fiber contained in the friction material composition increases, the average fiber length of the entire mineral fiber is preferably 500 μm or less, More preferably, it is 100 to 400 μm. Here, the average fiber length refers to a number average fiber length indicating an average value of the lengths of all corresponding fibers. For example, the average fiber length of 200 μm indicates that 50 mineral fibers used as a friction material composition raw material are randomly selected, the fiber length is measured with an optical microscope, and the average value is 200 μm.
また、本発明で用いることのできる鉱物繊維は、人体有害性の観点で生体溶解性であることが好ましい。ここでいう生体溶解性の鉱物繊維とは、人体内に取り込まれた場合でも短時間で一部分解され体外に排出される特徴を有する鉱物繊維である。具体的には、化学組成がアルカリ酸化物、アルカリ土類酸化物総量（ナトリウム、カリウム、カルシウム、マグネシウム、バリウムの酸化物の総量）が１８質量％以上で、かつ呼吸による短期バイオ永続試験で、２０μｍ以上の繊維の質量半減期が４０日以内又は腹膜内試験で過度の発癌性の証拠がないか又は長期呼吸試験で関連の病原性や腫瘍発生がないことを満たす繊維を示す（ＥＵ指令９７／６９／ＥＣのＮｏｔａ Ｑ（発癌性適用除外））。このような生体分解性鉱物繊維としては、ＳｉＯ2－Ａｌ2Ｏ3－ＣａＯ－ＭｇＯ－ＦｅＯ－Ｎａ2Ｏ系繊維などが挙げられ、ＳｉＯ2、Ａｌ2Ｏ3、ＣａＯ、ＭｇＯ、ＦｅＯ、Ｎａ2Ｏなどを任意の組み合わせで含有した繊維が挙げられる。市販品としてはＬＡＰＩＮＵＳ ＦＩＢＥＲＳ Ｂ．Ｖ製のＲｏｘｕｌシリーズなどが挙げられる。「Ｒｏｘｕｌ」は、ＳｉＯ2、Ａｌ2Ｏ3、ＣａＯ、ＭｇＯ、ＦｅＯ、Ｎａ2Ｏなどが含まれる。
Moreover, it is preferable that the mineral fiber which can be used by this invention is biosoluble from a human body harmful viewpoint. The term “biosoluble mineral fiber” as used herein refers to a mineral fiber having a characteristic that even if it is taken into the human body, it is partially decomposed and discharged outside the body in a short time. Specifically, the chemical composition is alkali oxide, alkaline earth oxide total amount (total amount of oxides of sodium, potassium, calcium, magnesium, barium) is 18% by mass or more, and in a short-term biopermanent test by respiration, A fiber that has a mass half-life of 20 μm or more within 40 days or no evidence of excessive carcinogenicity in an intraperitoneal test or that has no associated pathogenicity or tumor development in a long-term respiratory test (EU Directive 97 / 69 / EC Nota Q (carcinogenic exclusion)). Examples of such biodegradable mineral fibers include SiO 2 —Al 2 O 3 —CaO—MgO—FeO—Na 2 O-based fibers and the like, and include SiO 2 , Al 2 O 3 , CaO, MgO, FeO, Na. Examples thereof include fibers containing 2 O or the like in any combination. As a commercial item, LAPINUS FIBERS B.M. For example, V Roxul series. “Roxul” includes SiO 2 , Al 2 O 3 , CaO, MgO, FeO, Na 2 O and the like.
上記有機繊維としては、アラミド繊維、セルロース繊維、アクリル繊維、フェノール樹脂繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。
上記炭素系繊維としては、耐炎化繊維、ピッチ系炭素繊維、ＰＡＮ系炭素繊維、活性炭繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 As said organic fiber, an aramid fiber, a cellulose fiber, an acrylic fiber, a phenol resin fiber etc. can be used, These can be used individually or in combination of 2 or more types.
As the carbon-based fiber, flame-resistant fiber, pitch-based carbon fiber, PAN-based carbon fiber, activated carbon fiber, or the like can be used, and these can be used alone or in combination of two or more.
上記炭素系繊維としては、耐炎化繊維、ピッチ系炭素繊維、ＰＡＮ系炭素繊維、活性炭繊維などを用いることができ、これらを単独で又は２種類以上を組み合わせて使用することができる。 As said organic fiber, an aramid fiber, a cellulose fiber, an acrylic fiber, a phenol resin fiber etc. can be used, These can be used individually or in combination of 2 or more types.
As the carbon-based fiber, flame-resistant fiber, pitch-based carbon fiber, PAN-based carbon fiber, activated carbon fiber, or the like can be used, and these can be used alone or in combination of two or more.
本発明のノンアスベスト摩擦材組成物における、繊維基材の含有量は、銅又は銅合金の金属繊維を含め、摩擦材組成物において５～４０質量％であることが好ましく、５～２０質量％であることがより好ましく、５～１５質量％であることが特に好ましい。繊維基材の含有量を５～４０質量％の範囲とすることで、摩擦材として適正な気孔率が得られ、鳴き防止ができ、適正な材料強度が得られ、耐摩耗性を発現し、成形性をよくすることができる。
The content of the fiber base material in the non-asbestos friction material composition of the present invention is preferably 5 to 40% by mass in the friction material composition, including metal fibers of copper or copper alloy. More preferred is 5 to 15% by mass. By setting the content of the fiber base in the range of 5 to 40% by mass, an appropriate porosity as a friction material can be obtained, squealing can be prevented, an appropriate material strength can be obtained, and wear resistance can be achieved. Formability can be improved.
（その他の材料）
本発明のノンアスベスト摩擦材組成物は、前記の結合材、有機充填材、無機充填材、繊維基材、チタン酸リチウムカリウム及び黒鉛の材料以外に、必要に応じてその他の材料を配合することができる。
例えば、本発明のノンアスベスト摩擦材組成物中における、銅全体の含有量が、銅元素として５質量％を超えない範囲で、銅粉、黄銅粉、青銅粉などの金属粉末などを配合することができる。また、耐摩耗性の観点から、ＰＴＦＥ（ポリテトラフルオロエチレン）などのフッ素系ポリマーなどの有機添加剤などを配合することができる。 (Other materials)
The non-asbestos friction material composition of the present invention is blended with other materials as required in addition to the above-mentioned binder, organic filler, inorganic filler, fiber base material, lithium potassium titanate and graphite. Can do.
For example, in the non-asbestos friction material composition of the present invention, the total copper content does not exceed 5 mass% as a copper element, and metal powder such as copper powder, brass powder, bronze powder, etc. is blended. Can do. In addition, from the viewpoint of wear resistance, an organic additive such as a fluorine-based polymer such as PTFE (polytetrafluoroethylene) can be blended.
本発明のノンアスベスト摩擦材組成物は、前記の結合材、有機充填材、無機充填材、繊維基材、チタン酸リチウムカリウム及び黒鉛の材料以外に、必要に応じてその他の材料を配合することができる。
例えば、本発明のノンアスベスト摩擦材組成物中における、銅全体の含有量が、銅元素として５質量％を超えない範囲で、銅粉、黄銅粉、青銅粉などの金属粉末などを配合することができる。また、耐摩耗性の観点から、ＰＴＦＥ（ポリテトラフルオロエチレン）などのフッ素系ポリマーなどの有機添加剤などを配合することができる。 (Other materials)
The non-asbestos friction material composition of the present invention is blended with other materials as required in addition to the above-mentioned binder, organic filler, inorganic filler, fiber base material, lithium potassium titanate and graphite. Can do.
For example, in the non-asbestos friction material composition of the present invention, the total copper content does not exceed 5 mass% as a copper element, and metal powder such as copper powder, brass powder, bronze powder, etc. is blended. Can do. In addition, from the viewpoint of wear resistance, an organic additive such as a fluorine-based polymer such as PTFE (polytetrafluoroethylene) can be blended.
［摩擦材及び摩擦部材］
また、本発明は、上述のノンアスベスト摩擦材組成物を用いた摩擦材及び摩擦部材を提供する。
本発明のノンアスベスト摩擦材組成物は、これを成形することにより、自動車などのディスクブレーキパッドやブレーキライニングなどの摩擦材として使用することができる。本発明の摩擦材は良好な摩擦係数、耐クラック性、耐摩耗性を示すため、制動時に負荷の大きいディスクブレーキパッドの摩擦材に好適である。
さらに、上記摩擦材を用いることにより、該摩擦材を摩擦面となるように形成した摩擦部材を得ることができる。摩擦材を用いて形成することができる摩擦部材としては、例えば、下記の構成などが挙げられる。 [Friction material and friction member]
The present invention also provides a friction material and a friction member using the above-described non-asbestos friction material composition.
By molding the non-asbestos friction material composition of the present invention, it can be used as a friction material for disc brake pads and brake linings for automobiles. Since the friction material of the present invention exhibits a good coefficient of friction, crack resistance, and wear resistance, it is suitable for a friction material for a disk brake pad having a large load during braking.
Furthermore, by using the friction material, it is possible to obtain a friction member in which the friction material is formed to be a friction surface. Examples of the friction member that can be formed using the friction material include the following configurations.
また、本発明は、上述のノンアスベスト摩擦材組成物を用いた摩擦材及び摩擦部材を提供する。
本発明のノンアスベスト摩擦材組成物は、これを成形することにより、自動車などのディスクブレーキパッドやブレーキライニングなどの摩擦材として使用することができる。本発明の摩擦材は良好な摩擦係数、耐クラック性、耐摩耗性を示すため、制動時に負荷の大きいディスクブレーキパッドの摩擦材に好適である。
さらに、上記摩擦材を用いることにより、該摩擦材を摩擦面となるように形成した摩擦部材を得ることができる。摩擦材を用いて形成することができる摩擦部材としては、例えば、下記の構成などが挙げられる。 [Friction material and friction member]
The present invention also provides a friction material and a friction member using the above-described non-asbestos friction material composition.
By molding the non-asbestos friction material composition of the present invention, it can be used as a friction material for disc brake pads and brake linings for automobiles. Since the friction material of the present invention exhibits a good coefficient of friction, crack resistance, and wear resistance, it is suitable for a friction material for a disk brake pad having a large load during braking.
Furthermore, by using the friction material, it is possible to obtain a friction member in which the friction material is formed to be a friction surface. Examples of the friction member that can be formed using the friction material include the following configurations.
（１）摩擦材のみの構成。
（２）裏金と、該裏金の上に摩擦面となる本発明の摩擦材組成物からなる摩擦材とを有する構成。
（３）上記（２）の構成において、裏金と摩擦材との間に、裏金の接着効果を高めるための表面改質を目的としたプライマー層、及び、裏金と摩擦材との接着を目的とした接着層をさらに介在させた構成。
上記裏金は、摩擦部材の機械的強度の向上のために、通常、摩擦部材として用いるものであり、材質としては、金属または繊維強化プラスチックなどを用いることができ、例えば、鉄、ステンレス、無機繊維強化プラスチック、炭素繊維強化プラスチックなどが挙げられる。プライマー層及び接着層としては、通常、ブレーキシューなどの摩擦部材に用いられるものであればよい。 (1) Configuration of friction material only.
(2) The structure which has a back metal and the friction material which consists of a friction material composition of this invention used as a friction surface on this back metal.
(3) In the configuration of (2) above, between the back metal and the friction material, a primer layer for the purpose of surface modification for enhancing the adhesion effect of the back metal, and for the purpose of bonding the back metal and the friction material A configuration in which an adhesive layer is further interposed.
The backing metal is usually used as a friction member in order to improve the mechanical strength of the friction member. As the material, metal or fiber reinforced plastic can be used. For example, iron, stainless steel, inorganic fiber Examples thereof include reinforced plastic and carbon fiber reinforced plastic. The primer layer and the adhesive layer may be those used for friction members such as brake shoes.
（２）裏金と、該裏金の上に摩擦面となる本発明の摩擦材組成物からなる摩擦材とを有する構成。
（３）上記（２）の構成において、裏金と摩擦材との間に、裏金の接着効果を高めるための表面改質を目的としたプライマー層、及び、裏金と摩擦材との接着を目的とした接着層をさらに介在させた構成。
上記裏金は、摩擦部材の機械的強度の向上のために、通常、摩擦部材として用いるものであり、材質としては、金属または繊維強化プラスチックなどを用いることができ、例えば、鉄、ステンレス、無機繊維強化プラスチック、炭素繊維強化プラスチックなどが挙げられる。プライマー層及び接着層としては、通常、ブレーキシューなどの摩擦部材に用いられるものであればよい。 (1) Configuration of friction material only.
(2) The structure which has a back metal and the friction material which consists of a friction material composition of this invention used as a friction surface on this back metal.
(3) In the configuration of (2) above, between the back metal and the friction material, a primer layer for the purpose of surface modification for enhancing the adhesion effect of the back metal, and for the purpose of bonding the back metal and the friction material A configuration in which an adhesive layer is further interposed.
The backing metal is usually used as a friction member in order to improve the mechanical strength of the friction member. As the material, metal or fiber reinforced plastic can be used. For example, iron, stainless steel, inorganic fiber Examples thereof include reinforced plastic and carbon fiber reinforced plastic. The primer layer and the adhesive layer may be those used for friction members such as brake shoes.
本発明の摩擦材は、一般に使用されている方法を用いて製造することができ、本発明のノンアスベスト摩擦材組成物を成形して、好ましくは加熱加圧成形して製造される。
具体的には、本発明のノンアスベスト摩擦材組成物を、レディーゲミキサー、加圧ニーダー、アイリッヒミキサーなどの混合機を用いて均一に混合し、この混合物を成形金型にて予備成形し、得られた予備成形物を成形温度１３０℃～１６０℃、成形圧力２０～５０ＭＰａの条件で２～１０分間で成形し、得られた成形物を１５０～２５０℃で２～１０時間熱処理する。必要に応じて塗装、スコーチ処理、研磨処理を行うことによって摩擦材を製造することができる。 The friction material of the present invention can be produced by a generally used method, and is produced by molding the non-asbestos friction material composition of the present invention, preferably by hot pressing.
Specifically, the non-asbestos friction material composition of the present invention is uniformly mixed using a mixer such as a Readyge mixer, a pressure kneader, or an Eirich mixer, and this mixture is preformed in a molding die. The obtained preform is molded for 2 to 10 minutes under conditions of a molding temperature of 130 ° C. to 160 ° C. and a molding pressure of 20 to 50 MPa, and the obtained molded product is heat-treated at 150 to 250 ° C. for 2 to 10 hours. A friction material can be manufactured by performing coating, scorch treatment, and polishing treatment as necessary.
具体的には、本発明のノンアスベスト摩擦材組成物を、レディーゲミキサー、加圧ニーダー、アイリッヒミキサーなどの混合機を用いて均一に混合し、この混合物を成形金型にて予備成形し、得られた予備成形物を成形温度１３０℃～１６０℃、成形圧力２０～５０ＭＰａの条件で２～１０分間で成形し、得られた成形物を１５０～２５０℃で２～１０時間熱処理する。必要に応じて塗装、スコーチ処理、研磨処理を行うことによって摩擦材を製造することができる。 The friction material of the present invention can be produced by a generally used method, and is produced by molding the non-asbestos friction material composition of the present invention, preferably by hot pressing.
Specifically, the non-asbestos friction material composition of the present invention is uniformly mixed using a mixer such as a Readyge mixer, a pressure kneader, or an Eirich mixer, and this mixture is preformed in a molding die. The obtained preform is molded for 2 to 10 minutes under conditions of a molding temperature of 130 ° C. to 160 ° C. and a molding pressure of 20 to 50 MPa, and the obtained molded product is heat-treated at 150 to 250 ° C. for 2 to 10 hours. A friction material can be manufactured by performing coating, scorch treatment, and polishing treatment as necessary.
本発明のノンアスベスト摩擦材組成物は、摩擦係数、耐クラック性、耐摩耗性などに優れるため、ディスクブレーキパッドやブレーキライニングなどの摩擦部材の「上張り材」として有用であり、さらに摩擦材として高い耐クラック性を有するため、摩擦部材の「下張り材」として成形して用いることもできる。
なお、「上張り材」とは、摩擦部材の摩擦面となる摩擦材であり、「下張り材」とは、摩擦部材の摩擦面となる摩擦材と裏金との間に介在する、摩擦材と裏金との接着部付近の剪断強度、耐クラック性向上を目的とした層のことである。 Since the non-asbestos friction material composition of the present invention is excellent in friction coefficient, crack resistance, wear resistance, etc., it is useful as a “upper material” for friction members such as disc brake pads and brake linings. Since it has high crack resistance, it can be molded and used as a “underlaying material” of the friction member.
The “upper material” is a friction material that becomes the friction surface of the friction member, and the “underlay material” is a friction material that is interposed between the friction material that becomes the friction surface of the friction member and the back metal. It is a layer for the purpose of improving the shear strength and crack resistance in the vicinity of the adhesion part with the back metal.
なお、「上張り材」とは、摩擦部材の摩擦面となる摩擦材であり、「下張り材」とは、摩擦部材の摩擦面となる摩擦材と裏金との間に介在する、摩擦材と裏金との接着部付近の剪断強度、耐クラック性向上を目的とした層のことである。 Since the non-asbestos friction material composition of the present invention is excellent in friction coefficient, crack resistance, wear resistance, etc., it is useful as a “upper material” for friction members such as disc brake pads and brake linings. Since it has high crack resistance, it can be molded and used as a “underlaying material” of the friction member.
The “upper material” is a friction material that becomes the friction surface of the friction member, and the “underlay material” is a friction material that is interposed between the friction material that becomes the friction surface of the friction member and the back metal. It is a layer for the purpose of improving the shear strength and crack resistance in the vicinity of the adhesion part with the back metal.
本発明を実施例によりさらに詳細に説明するが、本発明によって何ら制限を受けるものではない。
なお、実施例及び比較例に示す評価は次のように行った。 The present invention will be described in more detail by way of examples, but is not limited by the present invention.
In addition, evaluation shown to an Example and a comparative example was performed as follows.
なお、実施例及び比較例に示す評価は次のように行った。 The present invention will be described in more detail by way of examples, but is not limited by the present invention.
In addition, evaluation shown to an Example and a comparative example was performed as follows.
（１）摩擦係数の評価
摩擦係数は、自動車技術会規格ＪＡＳＯ Ｃ４０６に基づき測定し、第２効力試験における摩擦係数の平均値を算出した。
（２）耐クラック性の評価
耐クラック性は、ＪＡＳＯ Ｃ４２７に示されるブレーキ温度４００℃の制動（初速度５０ｋｍ／ｈ、終速度０ｋｍ／ｈ、減速度０．３Ｇ、制動前ブレーキ温度１００℃）を摩擦材が半分の厚みとなるまで繰り返し、摩擦材側面及び摩擦面のクラックの生成を測定した。クラックの生成は、下記に従い、３段階評点にて評価した。
水準１：クラックの発生無し
水準２：摩擦材の摩擦面又は側面に０．１ｍｍのシックネスゲージが入らない程度のクラックが生成
水準３：摩擦材の摩擦面又は側面に０．１ｍｍのシックネスゲージが入る程度のクラックが生成
なお、摩擦材の摩擦面及び側面の一方にシックネスゲージが入らない程度のクラックが生成し、他方にシックネスゲージが入る程度のクラックが生成した場合、水準３とする。
（３）耐摩耗性の評価
耐摩耗性は、自動車技術会規格ＪＡＳＯ Ｃ４２７に基づき測定し、ブレーキ温度１００℃及び３００℃の制動１０００回相当の摩擦材の摩耗量を評価した。 (1) Evaluation of Friction Coefficient The friction coefficient was measured based on the Japan Society of Automotive Engineers standard JASO C406, and the average value of the friction coefficient in the second efficacy test was calculated.
(2) Evaluation of crack resistance Crack resistance is braking at a brake temperature of 400 ° C. shown in JASO C427 (initial speed 50 km / h, final speed 0 km / h, deceleration 0.3 G, brake temperature before brake 100 ° C.) Was repeated until the friction material had a half thickness, and the generation of cracks on the friction material side surface and the friction surface was measured. The generation of cracks was evaluated according to the following three-point score.
Level 1: No cracks generated Level 2: Cracks to the extent that a 0.1 mm thickness gauge does not enter the friction surface or side surface of the friction material Level 3: A 0.1 mm thickness gauge is formed on the friction surface or side surface of the friction material If a crack that does not contain a thickness gauge is generated on one of the friction surface and the side surface of the friction material and a crack that contains a thickness gauge is generated on the other side, the level 3 is set.
(3) Evaluation of wear resistance The wear resistance was measured based on the Japan Society of Automotive Engineers standard JASO C427, and the wear amount of the friction material corresponding to 1000 brakings at a brake temperature of 100 ° C and 300 ° C was evaluated.
摩擦係数は、自動車技術会規格ＪＡＳＯ Ｃ４０６に基づき測定し、第２効力試験における摩擦係数の平均値を算出した。
（２）耐クラック性の評価
耐クラック性は、ＪＡＳＯ Ｃ４２７に示されるブレーキ温度４００℃の制動（初速度５０ｋｍ／ｈ、終速度０ｋｍ／ｈ、減速度０．３Ｇ、制動前ブレーキ温度１００℃）を摩擦材が半分の厚みとなるまで繰り返し、摩擦材側面及び摩擦面のクラックの生成を測定した。クラックの生成は、下記に従い、３段階評点にて評価した。
水準１：クラックの発生無し
水準２：摩擦材の摩擦面又は側面に０．１ｍｍのシックネスゲージが入らない程度のクラックが生成
水準３：摩擦材の摩擦面又は側面に０．１ｍｍのシックネスゲージが入る程度のクラックが生成
なお、摩擦材の摩擦面及び側面の一方にシックネスゲージが入らない程度のクラックが生成し、他方にシックネスゲージが入る程度のクラックが生成した場合、水準３とする。
（３）耐摩耗性の評価
耐摩耗性は、自動車技術会規格ＪＡＳＯ Ｃ４２７に基づき測定し、ブレーキ温度１００℃及び３００℃の制動１０００回相当の摩擦材の摩耗量を評価した。 (1) Evaluation of Friction Coefficient The friction coefficient was measured based on the Japan Society of Automotive Engineers standard JASO C406, and the average value of the friction coefficient in the second efficacy test was calculated.
(2) Evaluation of crack resistance Crack resistance is braking at a brake temperature of 400 ° C. shown in JASO C427 (initial speed 50 km / h, final speed 0 km / h, deceleration 0.3 G, brake temperature before brake 100 ° C.) Was repeated until the friction material had a half thickness, and the generation of cracks on the friction material side surface and the friction surface was measured. The generation of cracks was evaluated according to the following three-point score.
Level 1: No cracks generated Level 2: Cracks to the extent that a 0.1 mm thickness gauge does not enter the friction surface or side surface of the friction material Level 3: A 0.1 mm thickness gauge is formed on the friction surface or side surface of the friction material If a crack that does not contain a thickness gauge is generated on one of the friction surface and the side surface of the friction material and a crack that contains a thickness gauge is generated on the other side, the level 3 is set.
(3) Evaluation of wear resistance The wear resistance was measured based on the Japan Society of Automotive Engineers standard JASO C427, and the wear amount of the friction material corresponding to 1000 brakings at a brake temperature of 100 ° C and 300 ° C was evaluated.
なお、上記ＪＡＳＯ Ｃ４０６，ＪＡＳＯ Ｃ４２７準拠による摩擦係数、耐摩耗性、耐クラック性の評価は、ダイナモメータを用い、イナーシャ７ｋｇｆ・ｍ・ｓ2で評価を行った。また、ベンチレーテッドディスクロータ（（株）キリウ製、材質ＦＣ１９０）、一般的なピンスライド式のコレットタイプのキャリパを用いて実施した。
The friction coefficient, wear resistance, and crack resistance according to JASO C406 and JASO C427 were evaluated using a dynamometer at an inertia of 7 kgf · m · s 2 . Moreover, it was carried out using a ventilated disc rotor (manufactured by Kiriu Co., Ltd., material FC190) and a general pin slide type collet type caliper.
［実施例１～６及び比較例１～６］
ディスクブレーキパッドの作製
表１に示す配合比率に従って材料を配合し、実施例及び比較例の摩擦材組成物を得た。この摩擦材組成物をレディーゲミキサー（（株）マツボー社製、商品名：レディーゲミキサーＭ２０）で混合し、この混合物を成形プレス（王子機械工業（株）製）で予備成形し、得られた予備成形物を成形温度１４５℃、成形圧力３０ＭＰａの条件で５分間成形プレス（三起精工（株）製）を用いて日立オートモティブシステムズ（株）製の裏金と共に加熱加圧成形し、得られた成形品を２００℃で４．５時間熱処理し、ロータリー研磨機を用いて研磨し、５００℃のスコーチ処理を行って、ディスクブレーキパッド（摩擦材の厚さ１１ｍｍ、摩擦材投影面積５２ｃｍ2）を得た。
作製したディスクブレーキパッドについて、前記の評価を行った結果を表１に示す。 [Examples 1 to 6 and Comparative Examples 1 to 6]
Preparation of Disc Brake Pads Materials were blended according to the blending ratio shown in Table 1, and friction material compositions of Examples and Comparative Examples were obtained. This friction material composition was mixed with a ladyge mixer (manufactured by Matsubo Co., Ltd., trade name: ladyge mixer M20), and this mixture was preformed with a molding press (manufactured by Oji Machinery Co., Ltd.). The pre-molded product was heat-pressed with a backing metal manufactured by Hitachi Automotive Systems, Ltd. using a molding press (manufactured by Sanki Seiko Co., Ltd.) for 5 minutes at a molding temperature of 145 ° C. and a molding pressure of 30 MPa. The molded product was heat treated at 200 ° C. for 4.5 hours, polished with a rotary polishing machine, subjected to scorch treatment at 500 ° C., and a disc brake pad (friction material thickness 11 mm, friction material projection area 52 cm 2 ). Got.
Table 1 shows the results of the above evaluations on the manufactured disc brake pads.
ディスクブレーキパッドの作製
表１に示す配合比率に従って材料を配合し、実施例及び比較例の摩擦材組成物を得た。この摩擦材組成物をレディーゲミキサー（（株）マツボー社製、商品名：レディーゲミキサーＭ２０）で混合し、この混合物を成形プレス（王子機械工業（株）製）で予備成形し、得られた予備成形物を成形温度１４５℃、成形圧力３０ＭＰａの条件で５分間成形プレス（三起精工（株）製）を用いて日立オートモティブシステムズ（株）製の裏金と共に加熱加圧成形し、得られた成形品を２００℃で４．５時間熱処理し、ロータリー研磨機を用いて研磨し、５００℃のスコーチ処理を行って、ディスクブレーキパッド（摩擦材の厚さ１１ｍｍ、摩擦材投影面積５２ｃｍ2）を得た。
作製したディスクブレーキパッドについて、前記の評価を行った結果を表１に示す。 [Examples 1 to 6 and Comparative Examples 1 to 6]
Preparation of Disc Brake Pads Materials were blended according to the blending ratio shown in Table 1, and friction material compositions of Examples and Comparative Examples were obtained. This friction material composition was mixed with a ladyge mixer (manufactured by Matsubo Co., Ltd., trade name: ladyge mixer M20), and this mixture was preformed with a molding press (manufactured by Oji Machinery Co., Ltd.). The pre-molded product was heat-pressed with a backing metal manufactured by Hitachi Automotive Systems, Ltd. using a molding press (manufactured by Sanki Seiko Co., Ltd.) for 5 minutes at a molding temperature of 145 ° C. and a molding pressure of 30 MPa. The molded product was heat treated at 200 ° C. for 4.5 hours, polished with a rotary polishing machine, subjected to scorch treatment at 500 ° C., and a disc brake pad (friction material thickness 11 mm, friction material projection area 52 cm 2 ). Got.
Table 1 shows the results of the above evaluations on the manufactured disc brake pads.
なお、実施例及び比較例において使用した各種材料は次のとおりである。
（結合材）
・フェノール樹脂：日立化成工業（株）製（商品名 ＨＰ４９１ＵＰ）
（有機充填剤）
・カシューダスト：東北化工（株）製（商品名 ＦＦ－１０９０）
・ＳＢＲ粉
（無機充填剤）
・黒鉛：ＴＩＭＣＡＬ社製（商品名 ＫＳ７５、人造黒鉛、球体、平均粒径約１５μｍ）
・チタン酸リチウムカリウム：大塚化学（株）製（商品名 テラセスＬ－ＳＳ、鱗片状、平均粒径３μｍ）
・硫酸バリウム：堺化学工業（株）製（商品名 硫酸バリウムＢＡ）
・マイカ
・コークス：ＴＩＭＣＡＬ社製（商品名 ＦＣ２５０－１５００）
・硫化錫：Ｃｈｅｍｅｔａｌｌ社製（商品名 Ｓｔａｎｎｏｌｕｂｅ）
・水酸化カルシウム
・酸化ジルコニウム
（繊維基材）
・アラミド繊維（有機繊維）：東レ・デュポン（株）製（商品名 １Ｆ５３８）
・鉄繊維（金属繊維）：ＧＭＴ社製（商品名 ＃０）
・銅繊維（金属繊維）：Ｓｕｎｎｙ Ｍｅｔａｌ社製（商品名 ＳＣＡ－１０７０）
・鉱物繊維（無機繊維）：ＬＡＰＩＮＵＳ ＦＩＢＥＲＳ Ｂ．Ｖ製（商品名 ＲＢ２４０、平均繊維長３００μｍ） The various materials used in the examples and comparative examples are as follows.
(Binder)
・ Phenolic resin: manufactured by Hitachi Chemical Co., Ltd. (trade name: HP491UP)
(Organic filler)
・ Cashew dust: Tohoku Kako Co., Ltd. (trade name: FF-1090)
・ SBR powder (inorganic filler)
Graphite: manufactured by TIMCAL (trade name: KS75, artificial graphite, sphere, average particle size of about 15 μm)
・ Lithium potassium titanate: manufactured by Otsuka Chemical Co., Ltd.
・ Barium sulfate: manufactured by Sakai Chemical Industry Co., Ltd. (trade name: Barium sulfate BA)
・ Mica Coke: TIMCAL (trade name FC250-1500)
-Tin sulfide: manufactured by Chemetall (trade name Stannolube)
・ Calcium hydroxide and zirconium oxide (fiber base)
・ Aramid fiber (organic fiber): manufactured by Toray DuPont Co., Ltd. (trade name: 1F538)
・ Iron fiber (metal fiber): manufactured by GMT (trade name # 0)
Copper fiber (metal fiber): manufactured by Sunny Metal (trade name SCA-1070)
Mineral fiber (inorganic fiber): LAPINUS FIBERS B. Product made in V (Brand name RB240, average fiber length 300μm)
（結合材）
・フェノール樹脂：日立化成工業（株）製（商品名 ＨＰ４９１ＵＰ）
（有機充填剤）
・カシューダスト：東北化工（株）製（商品名 ＦＦ－１０９０）
・ＳＢＲ粉
（無機充填剤）
・黒鉛：ＴＩＭＣＡＬ社製（商品名 ＫＳ７５、人造黒鉛、球体、平均粒径約１５μｍ）
・チタン酸リチウムカリウム：大塚化学（株）製（商品名 テラセスＬ－ＳＳ、鱗片状、平均粒径３μｍ）
・硫酸バリウム：堺化学工業（株）製（商品名 硫酸バリウムＢＡ）
・マイカ
・コークス：ＴＩＭＣＡＬ社製（商品名 ＦＣ２５０－１５００）
・硫化錫：Ｃｈｅｍｅｔａｌｌ社製（商品名 Ｓｔａｎｎｏｌｕｂｅ）
・水酸化カルシウム
・酸化ジルコニウム
（繊維基材）
・アラミド繊維（有機繊維）：東レ・デュポン（株）製（商品名 １Ｆ５３８）
・鉄繊維（金属繊維）：ＧＭＴ社製（商品名 ＃０）
・銅繊維（金属繊維）：Ｓｕｎｎｙ Ｍｅｔａｌ社製（商品名 ＳＣＡ－１０７０）
・鉱物繊維（無機繊維）：ＬＡＰＩＮＵＳ ＦＩＢＥＲＳ Ｂ．Ｖ製（商品名 ＲＢ２４０、平均繊維長３００μｍ） The various materials used in the examples and comparative examples are as follows.
(Binder)
・ Phenolic resin: manufactured by Hitachi Chemical Co., Ltd. (trade name: HP491UP)
(Organic filler)
・ Cashew dust: Tohoku Kako Co., Ltd. (trade name: FF-1090)
・ SBR powder (inorganic filler)
Graphite: manufactured by TIMCAL (trade name: KS75, artificial graphite, sphere, average particle size of about 15 μm)
・ Lithium potassium titanate: manufactured by Otsuka Chemical Co., Ltd.
・ Barium sulfate: manufactured by Sakai Chemical Industry Co., Ltd. (trade name: Barium sulfate BA)
・ Mica Coke: TIMCAL (trade name FC250-1500)
-Tin sulfide: manufactured by Chemetall (trade name Stannolube)
・ Calcium hydroxide and zirconium oxide (fiber base)
・ Aramid fiber (organic fiber): manufactured by Toray DuPont Co., Ltd. (trade name: 1F538)
・ Iron fiber (metal fiber): manufactured by GMT (trade name # 0)
Copper fiber (metal fiber): manufactured by Sunny Metal (trade name SCA-1070)
Mineral fiber (inorganic fiber): LAPINUS FIBERS B. Product made in V (Brand name RB240, average fiber length 300μm)
実施例１～６は、銅を多量に含有する比較例１と同水準の摩擦係数、耐クラック性、耐摩耗性を示した。また、実施例１～６は、チタン酸リチウムカリウム及び黒鉛を含有しない比較例２，３、黒鉛を含有しない比較例４、チタン酸リチウムカリウムを含有しない比較例５と比較して、耐クラック性、耐摩耗性が優れ、さらに銅及び銅合金以外の金属繊維を０．５質量％を超えて含有する比較例６と比較して耐摩耗性に優れることは明らかである。
また、チタン酸リチウムカリウムを１～２０質量％及び黒鉛を１～１５質量％の範囲で含有することにより、耐摩耗性がさらに向上することが、実施例１～４と実施例５との比較により分かる。 Examples 1 to 6 showed the same level of friction coefficient, crack resistance and wear resistance as Comparative Example 1 containing a large amount of copper. Examples 1 to 6 are more resistant to cracking than Comparative Examples 2 and 3, which do not contain lithium potassium titanate and graphite, Comparative Example 4 which does not contain graphite, and Comparative Example 5 which does not contain lithium potassium titanate. It is apparent that the wear resistance is excellent and the wear resistance is excellent as compared with Comparative Example 6 containing more than 0.5 mass% of metal fibers other than copper and copper alloy.
Further, the comparison between Examples 1 to 4 and Example 5 shows that wear resistance is further improved by containing 1 to 20% by mass of lithium potassium titanate and 1 to 15% by mass of graphite. It understands.
また、チタン酸リチウムカリウムを１～２０質量％及び黒鉛を１～１５質量％の範囲で含有することにより、耐摩耗性がさらに向上することが、実施例１～４と実施例５との比較により分かる。 Examples 1 to 6 showed the same level of friction coefficient, crack resistance and wear resistance as Comparative Example 1 containing a large amount of copper. Examples 1 to 6 are more resistant to cracking than Comparative Examples 2 and 3, which do not contain lithium potassium titanate and graphite, Comparative Example 4 which does not contain graphite, and Comparative Example 5 which does not contain lithium potassium titanate. It is apparent that the wear resistance is excellent and the wear resistance is excellent as compared with Comparative Example 6 containing more than 0.5 mass% of metal fibers other than copper and copper alloy.
Further, the comparison between Examples 1 to 4 and Example 5 shows that wear resistance is further improved by containing 1 to 20% by mass of lithium potassium titanate and 1 to 15% by mass of graphite. It understands.
本発明のノンアスベスト摩擦材組成物は、従来品と比較して制動時に生成する摩耗粉中の銅が少ないことから環境汚染が少なく、かつ優れた摩擦係数、耐クラック性、耐摩耗性を発現できるため、自動車のディスクブレーキパッドやブレーキライニングなどの摩擦材及び摩擦部材に有用である。
The non-asbestos friction material composition of the present invention has less environmental pollution due to less copper in the wear powder generated during braking compared to conventional products, and exhibits excellent friction coefficient, crack resistance, and wear resistance. Therefore, it is useful for friction materials and friction members such as disc brake pads and brake linings of automobiles.
Claims (5)
- 結合材、有機充填材、無機充填材及び繊維基材を含む摩擦材組成物であって、該摩擦材組成物中の銅の含有量が銅元素として５質量％以下であり、銅及び銅合金以外の金属繊維の含有量が０．５質量％以下であり、チタン酸リチウムカリウム及び黒鉛を含有することを特徴とするノンアスベスト摩擦材組成物。 A friction material composition comprising a binder, an organic filler, an inorganic filler, and a fiber base material, wherein the copper content in the friction material composition is 5% by mass or less as a copper element, and copper and a copper alloy A non-asbestos friction material composition characterized in that the content of metal fibers other than is 0.5% by mass or less and contains lithium potassium titanate and graphite.
- 前記摩擦材組成物中の前記チタン酸リチウムカリウムの含有量が１～３０質量％である、請求項１に記載のノンアスベスト摩擦材組成物。 The non-asbestos friction material composition according to claim 1, wherein the content of the lithium potassium titanate in the friction material composition is 1 to 30% by mass.
- 前記摩擦材組成物中の前記黒鉛の含有量が１～２０質量％である、請求項１又は２に記載のノンアスベスト摩擦材組成物。 The non-asbestos friction material composition according to claim 1 or 2, wherein the graphite content in the friction material composition is 1 to 20 mass%.
- 請求項１～３のいずれかに記載のノンアスベスト摩擦材組成物を成形してなる摩擦材。 A friction material formed by molding the non-asbestos friction material composition according to any one of claims 1 to 3.
- 請求項１～３のいずれかに記載のノンアスベスト摩擦材組成物を成形してなる摩擦材と裏金とを用いて形成される摩擦部材。 A friction member formed by using a friction material obtained by molding the non-asbestos friction material composition according to any one of claims 1 to 3 and a back metal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021256336A1 (en) * | 2020-06-16 | 2021-12-23 | 日清紡ブレーキ株式会社 | Friction pair |
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Families Citing this family (1)
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| JP2024089630A (en) | 2022-12-21 | 2024-07-03 | 曙ブレーキ工業株式会社 | Friction Material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002138273A (en) * | 2000-10-31 | 2002-05-14 | Akebono Brake Res & Dev Center Ltd | Brake friction material |
| JP2005036157A (en) * | 2003-07-18 | 2005-02-10 | Akebono Brake Ind Co Ltd | Friction material |
| JP2007186591A (en) * | 2006-01-13 | 2007-07-26 | Advics:Kk | Friction material |
| WO2008108197A1 (en) * | 2007-03-02 | 2008-09-12 | Otsuka Chemical Co., Ltd. | Titanate having alkali metal titanate bonded thereto, process for producing the same, and resin composition containing titanate having alkali metal titanate bonded thereto |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3027577B1 (en) * | 1999-02-09 | 2000-04-04 | 大塚化学株式会社 | Friction material |
| JP2000219873A (en) * | 2000-01-01 | 2000-08-08 | Nisshinbo Ind Inc | Heat resistant dry type frictional material |
| DE60238931D1 (en) * | 2001-10-29 | 2011-02-24 | Otsuka Chemical Co Ltd | LITHIUM CALIUM TITANATE OF THE LEPIDOCROCITE TYPE, METHOD OF MANUFACTURING THEREOF AND FRICTION MATERIAL |
| US20070219289A1 (en) * | 2006-03-15 | 2007-09-20 | Federal-Mogul World Wide, Inc. | Friction Material |
| DE102007061459B4 (en) * | 2006-12-27 | 2020-10-08 | Akebono Brake Industry Co., Ltd. | Asbestos-free friction material |
| US8172051B2 (en) * | 2008-10-03 | 2012-05-08 | Federal-Mogul Products, Inc. | Friction material for brakes |
-
2011
- 2011-11-07 JP JP2012544187A patent/JP6079235B2/en active Active
- 2011-11-07 WO PCT/JP2011/075643 patent/WO2012066968A1/en active Application Filing
-
2016
- 2016-11-24 JP JP2016228289A patent/JP6323539B2/en active Active
-
2018
- 2018-04-11 JP JP2018076090A patent/JP6558465B2/en active Active
-
2019
- 2019-07-18 JP JP2019132943A patent/JP6760449B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002138273A (en) * | 2000-10-31 | 2002-05-14 | Akebono Brake Res & Dev Center Ltd | Brake friction material |
| JP2005036157A (en) * | 2003-07-18 | 2005-02-10 | Akebono Brake Ind Co Ltd | Friction material |
| JP2007186591A (en) * | 2006-01-13 | 2007-07-26 | Advics:Kk | Friction material |
| WO2008108197A1 (en) * | 2007-03-02 | 2008-09-12 | Otsuka Chemical Co., Ltd. | Titanate having alkali metal titanate bonded thereto, process for producing the same, and resin composition containing titanate having alkali metal titanate bonded thereto |
Cited By (37)
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|---|---|---|---|---|
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| CN111720462A (en) * | 2012-12-21 | 2020-09-29 | 曙制动器工业株式会社 | Friction material |
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| WO2014098215A1 (en) | 2012-12-21 | 2014-06-26 | 曙ブレーキ工業株式会社 | Friction material |
| CN111720462B (en) * | 2012-12-21 | 2022-04-05 | 曙制动器工业株式会社 | Friction material |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6079235B2 (en) | 2017-02-15 |
| JP6760449B2 (en) | 2020-09-23 |
| JP6323539B2 (en) | 2018-05-16 |
| JPWO2012066968A1 (en) | 2014-05-12 |
| JP2017075325A (en) | 2017-04-20 |
| JP2018127639A (en) | 2018-08-16 |
| JP2019203140A (en) | 2019-11-28 |
| JP6558465B2 (en) | 2019-08-14 |
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