JP5412010B1 - ゴム組成物、その加硫物及び成形品 - Google Patents
ゴム組成物、その加硫物及び成形品 Download PDFInfo
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- JP5412010B1 JP5412010B1 JP2013531991A JP2013531991A JP5412010B1 JP 5412010 B1 JP5412010 B1 JP 5412010B1 JP 2013531991 A JP2013531991 A JP 2013531991A JP 2013531991 A JP2013531991 A JP 2013531991A JP 5412010 B1 JP5412010 B1 JP 5412010B1
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- Prior art keywords
- rubber
- mass
- parts
- rubber composition
- chloroprene
- Prior art date
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 163
- 239000005060 rubber Substances 0.000 title claims abstract description 140
- 239000000203 mixture Substances 0.000 title claims abstract description 95
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 51
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000806 elastomer Substances 0.000 claims abstract description 24
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 13
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical group ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- -1 ether ester Chemical class 0.000 claims description 28
- 230000003712 anti-aging effect Effects 0.000 claims description 26
- 239000004014 plasticizer Substances 0.000 claims description 20
- 239000004711 α-olefin Substances 0.000 claims description 20
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 15
- 239000005977 Ethylene Substances 0.000 claims description 15
- 229920005549 butyl rubber Polymers 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 150000004982 aromatic amines Chemical class 0.000 claims description 5
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004902 Softening Agent Substances 0.000 claims description 4
- 239000006230 acetylene black Substances 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- QYMFNZIUDRQRSA-UHFFFAOYSA-N dimethyl butanedioate;dimethyl hexanedioate;dimethyl pentanedioate Chemical compound COC(=O)CCC(=O)OC.COC(=O)CCCC(=O)OC.COC(=O)CCCCC(=O)OC QYMFNZIUDRQRSA-UHFFFAOYSA-N 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 239000010734 process oil Substances 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 8
- 238000004073 vulcanization Methods 0.000 description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 19
- 230000000694 effects Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 238000006116 polymerization reaction Methods 0.000 description 11
- 239000006229 carbon black Substances 0.000 description 10
- 238000013329 compounding Methods 0.000 description 10
- 239000000178 monomer Substances 0.000 description 9
- 239000000377 silicon dioxide Substances 0.000 description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000006087 Silane Coupling Agent Substances 0.000 description 6
- 150000004291 polyenes Chemical class 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 239000003995 emulsifying agent Substances 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- OJOWICOBYCXEKR-APPZFPTMSA-N (1S,4R)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound CC=C1C[C@@H]2C[C@@H]1C=C2 OJOWICOBYCXEKR-APPZFPTMSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 3
- 238000007720 emulsion polymerization reaction Methods 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 3
- 239000003505 polymerization initiator Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XWJBRBSPAODJER-UHFFFAOYSA-N 1,7-octadiene Chemical compound C=CCCCCC=C XWJBRBSPAODJER-UHFFFAOYSA-N 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 2
- UJAWGGOCYUPCPS-UHFFFAOYSA-N 4-(2-phenylpropan-2-yl)-n-[4-(2-phenylpropan-2-yl)phenyl]aniline Chemical compound C=1C=C(NC=2C=CC(=CC=2)C(C)(C)C=2C=CC=CC=2)C=CC=1C(C)(C)C1=CC=CC=C1 UJAWGGOCYUPCPS-UHFFFAOYSA-N 0.000 description 2
- VSQLAQKFRFTMNS-UHFFFAOYSA-N 5-methylhexa-1,4-diene Chemical compound CC(C)=CCC=C VSQLAQKFRFTMNS-UHFFFAOYSA-N 0.000 description 2
- UCKITPBQPGXDHV-UHFFFAOYSA-N 7-methylocta-1,6-diene Chemical compound CC(C)=CCCCC=C UCKITPBQPGXDHV-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- 229910004283 SiO 4 Inorganic materials 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229920005555 halobutyl Polymers 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- VJHGSLHHMIELQD-UHFFFAOYSA-N nona-1,8-diene Chemical compound C=CCCCCCC=C VJHGSLHHMIELQD-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 2
- WGKLOLBTFWFKOD-UHFFFAOYSA-N tris(2-nonylphenyl) phosphite Chemical compound CCCCCCCCCC1=CC=CC=C1OP(OC=1C(=CC=CC=1)CCCCCCCCC)OC1=CC=CC=C1CCCCCCCCC WGKLOLBTFWFKOD-UHFFFAOYSA-N 0.000 description 2
- RSJKGSCJYJTIGS-UHFFFAOYSA-N undecane Chemical compound CCCCCCCCCCC RSJKGSCJYJTIGS-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- PCPYTNCQOSFKGG-ONEGZZNKSA-N (1e)-1-chlorobuta-1,3-diene Chemical compound Cl\C=C\C=C PCPYTNCQOSFKGG-ONEGZZNKSA-N 0.000 description 1
- DNZZPKYSGRTNGK-PQZOIKATSA-N (1z,4z)-cycloocta-1,4-diene Chemical compound C1C\C=C/C\C=C/C1 DNZZPKYSGRTNGK-PQZOIKATSA-N 0.000 description 1
- PLYLPJCEVQXSHZ-UHFFFAOYSA-N (2-nonylphenyl) diphenyl phosphite Chemical compound CCCCCCCCCC1=CC=CC=C1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 PLYLPJCEVQXSHZ-UHFFFAOYSA-N 0.000 description 1
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- JBVMSEMQJGGOFR-FNORWQNLSA-N (4e)-4-methylhexa-1,4-diene Chemical compound C\C=C(/C)CC=C JBVMSEMQJGGOFR-FNORWQNLSA-N 0.000 description 1
- PRBHEGAFLDMLAL-GQCTYLIASA-N (4e)-hexa-1,4-diene Chemical compound C\C=C\CC=C PRBHEGAFLDMLAL-GQCTYLIASA-N 0.000 description 1
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- VNQNXQYZMPJLQX-UHFFFAOYSA-N 1,3,5-tris[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CN2C(N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C(=O)N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C2=O)=O)=C1 VNQNXQYZMPJLQX-UHFFFAOYSA-N 0.000 description 1
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- 239000004912 1,5-cyclooctadiene Substances 0.000 description 1
- XZZWOTQMUOIIFX-UHFFFAOYSA-N 1-(2-diphenoxyphosphanyloxypropoxy)propan-2-yl diphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC(C)COCC(C)OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 XZZWOTQMUOIIFX-UHFFFAOYSA-N 0.000 description 1
- IVORCBKUUYGUOL-UHFFFAOYSA-N 1-ethynyl-2,4-dimethoxybenzene Chemical compound COC1=CC=C(C#C)C(OC)=C1 IVORCBKUUYGUOL-UHFFFAOYSA-N 0.000 description 1
- VETPHHXZEJAYOB-UHFFFAOYSA-N 1-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC=CC2=CC(NC=3C=CC(NC=4C=C5C=CC=CC5=CC=4)=CC=3)=CC=C21 VETPHHXZEJAYOB-UHFFFAOYSA-N 0.000 description 1
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- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 1
- IKQLOUCRHGTJFA-UHFFFAOYSA-N 2,8-dihydroxy-5,5-dimethyl-2,8-di(nonyl)-2,8-diphenyl-1,3,7,9-tetraoxa-2lambda5,8lambda5-diphosphaspiro[3.5]nonane Chemical compound CCCCCCCCCP1(OCC(C2(O1)OP(O2)(CCCCCCCCC)(C3=CC=CC=C3)O)(C)C)(C4=CC=CC=C4)O IKQLOUCRHGTJFA-UHFFFAOYSA-N 0.000 description 1
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- ROHFBIREHKPELA-UHFFFAOYSA-N 2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]prop-2-enoic acid;methane Chemical compound C.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O ROHFBIREHKPELA-UHFFFAOYSA-N 0.000 description 1
- VFBJXXJYHWLXRM-UHFFFAOYSA-N 2-[2-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]ethylsulfanyl]ethyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCSCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 VFBJXXJYHWLXRM-UHFFFAOYSA-N 0.000 description 1
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 description 1
- XKZGIJICHCVXFV-UHFFFAOYSA-N 2-ethylhexyl diphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OCC(CC)CCCC)OC1=CC=CC=C1 XKZGIJICHCVXFV-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
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Abstract
クロロプレンゴム:50〜90質量%及びエラストマー:10〜50質量%からなるゴム成分100質量部に対して、JIS Z8901に規定される方法により測定した算術平均粒径が3〜10μmの亜鉛末を3〜20質量部と、JIS Z8830に規定される1点法により測定したBET比表面積が20〜150m2/gである酸化マグネシウムを4〜16質量部とを配合して、ゴム組成物とする。そして、このゴム組成物を、成形・加硫して、加硫物や成形品とする。
Description
このゴム組成物では、前記エラストマーとして、例えばエチレン・α−オレフィン共重合体、エチレン・α−オレフィン・非共役ポリエン共重合体及びブチル系ゴムからなる群から選択される少なくとも1種を用いることができる。
また、前記クロロプレンゴムとしては、例えばメルカプタン変性クロロプレンゴム又はキサントゲン変性クロロプレンゴムを用いることができる。
一方、前記ゴム成分100質量部あたり、芳香族アミン系老化防止剤、ヒンダードフェノール系老化防止剤及び亜リン酸系老化防止剤から選択される少なくとも1種の老化防止剤を、合計で3〜10質量部含有していてもよい。
また、窒素吸着比表面積(N2SA)が50〜160m2/gのアセチレンブラックを、前記ゴム成分100質量部あたり、10〜50質量部含有することもできる。
更に、前記ゴム成分100質量部あたり、植物油系軟化剤、エーテル・エステル系可塑剤、フタル酸エステル系可塑剤、アジピン酸エステル系可塑剤、脂肪族二塩基酸エステル系可塑剤、リン酸エステル系可塑剤、クエン酸エステル系可塑剤及び石油系芳香族プロセスオイルからなる群から選択される少なくとも1種の軟化剤を、5〜20質量部含有させてもよい。
また、本発明に係る成形品は、前述した加硫物からなるものである。
先ず、本発明の第1の実施形態に係るゴム組成物について説明する。本実施形態のゴム組成物は、ゴム成分がクロロプレンゴムとエラストマーとからなるブレンドゴムであり、特定の亜鉛末と酸化マグネシウムを含有している。また、本実施形態のゴム組成物には、前述した各成分に加えて、老化防止剤、カーボンブラック、軟化剤及び充填剤などを配合することもできる。
ゴム成分を構成するクロロプレンゴムは、クロロプレンを主成分とする原料単量体を重合した後、必要に応じて洗浄や乾燥を行うことにより得られ、重合反応の生成物であるクロロプレン単独重合体又はクロロプレンと他の単量体との共重合体の他に、重合時に添加された乳化剤、分散剤、触媒、触媒活性化剤、連鎖移動剤及び重合禁止剤などが含まれている場合がある。
エラストマーは、ゴム組成物の耐熱性を向上させるために配合する。本実施形態のゴム組成物に配合されるエラストマーは、特に限定されるものではないが、エチレン・α−オレフィン共重合体、エチレン・α−オレフィン・非共役ポリエン共重合体及びブチル系ゴムが好適である。これにより、ゴム組成物の耐熱性を更に向上させることができる。なお、これらのエラストマーは、単独で使用してもよく、複数を組み合わせ使用してもよい。
ゴム成分中のエラストマーの割合が10質量%未満の場合、ゴム組成物の耐熱性向上効果が十分に得られず、また、エラストマーの割合が50質量%を超えると、クロロプレンゴムとの相溶性が低下し、ゴム組成物が加硫しにくくなる。よって、本実施形態のゴム組成物においては、エラストマーの配合割合をゴム成分全量あたり10〜50質量%とする。
亜鉛末は、ゴム成分として配合されるエラストマーや後述する酸化マグネシウムとの相乗効果により、ゴム組成物の耐熱性をさらに向上させる効果がある。ただし、亜鉛末の算術平均粒径が3μm未満の場合、ゴム組成物中での分散不良に繋がる虞があり、算術平均粒径が10μmを超えると、耐熱性を向上効果が得られないことがある。ここで、亜鉛粉末の算術平均粒径は、JIS Z8901:2006に規定される透過形電子顕微鏡法又は透過形光学顕微鏡法により測定することができる。
酸化マグネシウムは、ゴム成分として配合されるエラストマーや前述した亜鉛末との相乗効果により、ゴム組成物の耐熱性を飛躍的に向上させる効果がある。ただし、酸化マグネシウムのBET比表面積が20m2/g未満の場合、加硫物や成形品としたときに目的とする機械的強度が得られないことがある。また、BET比表面積が150m2/gを超える酸化マグネシウムを使用すると、耐熱性向上の効果が低下する。
老化防止剤は、ゴム成分として配合されたクロロプレンゴムやエラストマーが、オゾンや熱により劣化することを防止する効果がある。このような老化防止剤としては、例えば、芳香族アミン系老化防止剤、ヒンダードフェノール系老化防止剤及び亜リン酸系老化防止剤などが挙げられる。
カーボンブラックは、ゴム組成物やこれを加硫して得られる加硫物や成形品を補強し、強度を発現させる効果がある。本実施形態のゴム組成物に配合するカーボンブラックの種類は、特に限定されるものではないが、耐熱性向上の観点から、窒素吸着比表面積(N2SA)が50〜160m2/gのアセチレンブラックを用いることが望ましい。
本実施形態のゴム組成物は、植物油系軟化剤、エーテル・エステル系可塑剤、フタル酸エステル系可塑剤、アジピン酸エステル系可塑剤、脂肪族二塩基酸エステル系可塑剤、リン酸エステル系可塑剤、クエン酸エステル系可塑剤及び石油系芳香族プロセスオイルのうち、1種又は2種以上の軟化剤を配合することができる。
本実施形態のゴム組成物には、前述した各成分と共に、シリカ及びシランカップリング剤を配合することもできる。シリカ及びシランカップリング剤を配合することにより、得られるゴム組成物の動的低発熱性を向上させることができる。本実施形態のゴム組成物に配合するシリカは、特に限定されるものではなく、例えば湿式シリカ、乾式シリカ及びコロイダルシリカなどのゴムの補強用充填材として使用可能なものから任意に選択して使用することができる。
次に、本発明の第2の実施形態に係る加硫物について説明する。本実施形態の加硫物は、前述した第1の実施形態のゴム組成物を、目的に応じた形状に成形加工して加硫したものである。その際、ゴム組成物の加硫方法は、特に限定されるものではなく、成形中又は成形後に、例えばプレス加硫、インジェクション加硫、直接釜加硫、間接釜加硫、直接蒸気連続加硫、常圧連続加硫又は連続加硫プレスなどの加硫方法により、加硫すればよい。
(ゴム成分)
・メルカプタン変性クロロプレンゴム(電気化学工業株式会社製 M−40)
・キサントゲン変性クロロプレンゴム(電気化学工業株式会社製 DCR−66)
・硫黄変性クロロプレンゴム(電気化学工業株式会社製 DCR−40A)
・エチレン・プロピレンゴム(住友化学株式会社製 ESPRENE 201)
・エチレン・プロピレン・ジエンゴム(三井化学株式会社製 EPT 4045M)
・ブチル系ゴム(JSR株式会社製 JSR BUTYL 268)
・アセチレンブラック(電気化学工業株式会社製 デンカブラック粉状品)
・カーボンブラックGPF(旭カーボン株式会社製 旭#55)
・菜種油(当栄ケミカル株式会社製 #8115−R)
・ステアリン酸(新日本理化株式会社製 ステアリン酸50S)
・アミン系老化防止剤(大内新興化学工業株式会社製 ノクラックCD:4,4−ビス(α,α−ジメチルベンジル)ジフェニルアミン)
・ヒンダードフェノール系老化防止剤(BASFジャパン製 IRGANOX 1010:ペンタエリスリトールテトラキス[3−(3,5−ジ−tert−ブチル−4−ヒドロキシフェニル)プロピオネート)
・亜リン酸系老化防止剤(大内新興化学工業株式会社製 ノクラックTNP:トリス(ノニルフェニル)ホスファイト)
・酸化マグネシウム#30(協和化学工業株式会社製 キョーワマグ30(BET比表面積=40m2/g))
・酸化マグネシウム#150(協和化学工業株式会社製 キョーワマグ150(BET比表面積=148m2/g))
・亜鉛末A(堺化学工業株式会社製 亜鉛末#F(平均粒径:3.8μm))
・亜鉛末B(東邦亜鉛株式会社製 AN−325(平均粒径:18μm))
・亜鉛末C(ハクスイテック株式会社製 R末(平均粒径:7μm))
・チオウレア系加硫促進剤(川口化学工業株式会社製 アクセル22S:エチレンチオ尿素)
・酸化亜鉛(堺化学工業株式会社製 酸化亜鉛2種)
前述した方法で作製した実施例1〜13及び比較例1〜7の各ゴム組成物を、油圧プレスにて、160℃で、20分間加硫し、試験片を作製した。そして、この試験片を用いて、「破断伸び(EB)」、「硬度(HS)」及び「耐熱性」について評価した。
Claims (8)
- クロロプレンゴム:50〜90質量%及びエラストマー:10〜50質量%からなるゴム成分100質量部に対して、
JIS Z8901に規定される方法により測定した算術平均粒子径が3〜10μmの亜鉛末を3〜20質量部と、
JIS Z8830に規定される1点法により測定したBET比表面積が20〜150m2/gである酸化マグネシウムを4〜16質量部と、
を含有するゴム組成物。 - 前記エラストマーは、エチレン・α−オレフィン共重合体、エチレン・α−オレフィン・非共役ポリエン共重合体及びブチル系ゴムからなる群から選択される少なくとも1種であることを特徴とする請求項1に記載のゴム組成物。
- 前記クロロプレンゴムは、メルカプタン変性クロロプレンゴム又はキサントゲン変性クロロプレンゴムであることを特徴とする請求項1又は2に記載のゴム組成物。
- 芳香族アミン系老化防止剤、ヒンダードフェノール系老化防止剤及び亜リン酸系老化防止剤から選択される少なくとも1種の老化防止剤を、前記ゴム成分100質量部あたり、合計で3〜10質量部含有することを特徴とする請求項1〜3のいずれか1項に記載のゴム組成物。
- 窒素吸着比表面積(N2SA)が50〜160m2/gのアセチレンブラックを、前記ゴム成分100質量部あたり、10〜50質量部含有することを特徴とする請求項1〜4のいずれか1項に記載のゴム組成物。
- 植物油系軟化剤、エーテル・エステル系可塑剤、フタル酸エステル系可塑剤、アジピン酸エステル系可塑剤、脂肪族二塩基酸エステル系可塑剤、リン酸エステル系可塑剤、クエン酸エステル系可塑剤及び石油系芳香族プロセスオイルからなる群から選択される少なくとも1種の軟化剤を、前記ゴム成分100質量部あたり、5〜20質量部含有することを特徴とする請求項1〜5のいずれか1項に記載のゴム組成物。
- 請求項1〜6のいずれか1項記載のゴム組成物を加硫して得た加硫物。
- 請求項7に記載の加硫物からなる成形品。
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JP2016070023A (ja) * | 2014-10-01 | 2016-05-09 | 中日本高速技術マーケティング株式会社 | ゴム支承 |
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