CN109667861A - A kind of friction material, brake block and the method for preparing brake block - Google Patents
A kind of friction material, brake block and the method for preparing brake block Download PDFInfo
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- CN109667861A CN109667861A CN201811519761.2A CN201811519761A CN109667861A CN 109667861 A CN109667861 A CN 109667861A CN 201811519761 A CN201811519761 A CN 201811519761A CN 109667861 A CN109667861 A CN 109667861A
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- friction material
- brake block
- fiber
- friction
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- 239000002783 friction material Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 99
- 239000002994 raw material Substances 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010439 graphite Substances 0.000 claims abstract description 21
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 21
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 20
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 19
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 19
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011256 inorganic filler Substances 0.000 claims abstract description 18
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 18
- 239000005011 phenolic resin Substances 0.000 claims abstract description 18
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000004917 carbon fiber Substances 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 239000010949 copper Substances 0.000 claims abstract description 17
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 16
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 16
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 34
- 241000357293 Leptobrama muelleri Species 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 29
- 238000000227 grinding Methods 0.000 description 21
- 238000012545 processing Methods 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 8
- 229910052726 zirconium Inorganic materials 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000012043 crude product Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000010428 baryte Substances 0.000 description 2
- 229910052601 baryte Inorganic materials 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- KXXXUIKPSVVSAW-UHFFFAOYSA-K pyranine Chemical compound [Na+].[Na+].[Na+].C1=C2C(O)=CC(S([O-])(=O)=O)=C(C=C3)C2=C2C3=C(S([O-])(=O)=O)C=C(S([O-])(=O)=O)C2=C1 KXXXUIKPSVVSAW-UHFFFAOYSA-K 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 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
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of friction material, brake block and the methods for preparing brake block, belong to brake block technical field.It is counted on the basis of the gross mass of the raw material components of friction material, the friction material includes following raw material components and mass percentage: phenolic resin 5%-15%, polyvinyl resin 4%-15%, steel fibre 8%-25%, organic fiber 5%-15%, graphite 5%-10%, molybdenum disulfide 3%-10%, carbon fiber 2%-7%, ceramic fibre 5%-30%, chrome oxide green 3%-10%, red copper fiber 5%-25%, yttrium stable zirconium oxide 3%-5%；Aluminum fiber 2%-5%；Inorganic filler 10%-25%.Using the final brake block stable friction factor obtained of friction material of the present invention and method, wear rate is smaller, and anti-shear performance is high, compensates for the domestic blank without heavily loaded elevator brake block.
Description
Technical field
The present invention relates to brake block technical fields, and in particular to a kind of friction material, brake block and the side for preparing brake block
Method.
Background technique
With the development of society, skyscraper and megastore are more and more, become in these local transport bulk supply tariffs
Difficulty, so developing heavily loaded elevator becomes development trend.The key of elevator operation is to transport safely, and elevator safety gear is to guarantee peace
Last one of barrier of full accident, and elevator safety gear brake block is the most important thing that determines elevator and whether can brake, thus it is electric
Terraced safety tongs brake block is the most critical component for determining heavily loaded elevator safety brake.Current its wear rate of elevator brake block is inclined
Height, anti-shear ability are poor, and there are great security risks when using in the heavily loaded elevator of 6T or more, however are applicable at present
Not yet in the safety tongs brake block country of 6T or more elevator, and external price is very expensive, so studying heavily loaded elevator safety
Clamping brake block becomes industrial trend.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of friction material, brake block and
The method for preparing brake block, can make up for it the blank of domestic heavily loaded elevator safety gear brake block, and overcomes and brake in the prior art
The problems such as piece is easy to wear, shear strength is insufficient.
To achieve the goals above or other purposes, the present invention is achieved by the following technical solutions:
A kind of friction material for brake block, is counted on the basis of the gross mass of the raw material components of friction material, described to rub
Wiping material includes following raw material components and mass percentage: phenolic resin 5%-15%, polyvinyl resin 4%-15%, steel are fine
Tie up 8%-25%, organic fiber 5%-15%, graphite 5%-10%, molybdenum disulfide 3%-10%, carbon fiber 2%-7%, ceramics
Fiber 5%-30%, chrome oxide green 3%-10%, red copper fiber 5%-25%, yttrium stable zirconium oxide 3%-5%；Aluminum fiber 2%-
5%；Inorganic filler 10%-25%.
Preferably, the mass percentage of the polyvinyl resin is 6%~12%.
Preferably, the mass percentage of the organic fiber is 7%~14%.
Preferably, the mass percentage of the molybdenum disulfide is 3%~7%.
Preferably, the mass percentage of the chrome oxide green is 3%~8%.
Preferably, the inorganic filler be barite, calcium carbonate, talcum powder, in calcium sulfate crystal whiskers any one or it is several
Kind mixing.
Preferably, (125 DEG C) of the flow distance of phenolic resin are 50-70mm, and (150 DEG C) of gelation time are 90-150s.
Preferably, the polyethylene resin powder, 3-6 μm of average grain diameter, specific surface area 7.6m3/ g, 335 DEG C of fusing point.
Flow distance and gel time are measured with reference to the method for appendix A 2 and A4 in GB/T 24411-2009 standard.
Preferably, the fibre length of the steel fibre is 0.25-0.42mm.
Preferably, the fibre length of the organic fiber is 0.8-2mm.
Preferably, the fibre length of the carbon fiber is 0.5-0.9mm.
Preferably, the fibre length of the ceramic fibre is 80-300 μm.
Preferably, the fibre length of the red copper fiber is 0.15-0.21mm.
Preferably, the fibre length of the aluminum fiber is 0.3-0.42mm.
Preferably, the molybdenum disulfide granularity 300-400 mesh.
Preferably, the graphite is soft graphite, and the granularity of the soft graphite is 20-60 mesh.
The present invention also provides purposes of the above-mentioned friction material in brake block.
Invention further provides a kind of brake blocks, including above-mentioned friction material and steel back.
The present invention also provides a kind of methods for preparing above-mentioned brake block, comprising the following steps:
(1) it is equal that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio
It is even；
(2) hot-forming: the good friction material of mixture being packed into mold, is shakeout, steel back is put into, progress is hot-forming, takes off
Mould；
Preferably, pressing pressure when hot-forming in step (2) is 400-700kg/cm2, pressing time 5-7min,
130-200 DEG C of press temperature.
Further, steel back surface described in step (2) is coated with steel back glue, is technology commonly used in the art, is conducive to steel back
It is bonded together with mixture.
Further, step (3) grinding process is additionally provided with after step (2): using combined grinding machine to brake block crude product into
Row grinding processing makes friction material surface meet defined thickness, the depth of parallelism, planarity requirements.
Further, it is additionally provided with step (4) fluting, grinding angular surface after step (3): using slotting, grinding oblique machine, passing through fluting
Grinding wheel saw blade or cup emery wheel process the surface of friction material, process slot or inclined-plane, and finishing guarantees the contact surface of brake block
Product reduces running-in time.
Further, step (5) stamp is additionally provided with after step (4): using ink jet numbering machine and ink special, on steel back surface
Or friction material side, the different information of spray printing different clients and the processing lot number of product, in order to product back-tracing.
The friction material of brake block is used in the present invention, using phenolic resin as bonding agent, addition polyvinyl resin to improve tree
The adhesive strength of rouge bonding agent, addition chrome oxide green improve the coefficient of friction of brake block, add steel fibre, organic fiber, carbon fiber
Dimension, red copper fiber etc., improve the intensity of brake block, use graphite, molybdenum disulfide as lubricant component, protect antithesis, stablize friction
Coefficient, the brake block thus produced are small to the abrasion of antithesis disk, and static and dynamic friction coefficient is high, improve the safety of brake block, meet
The requirement of high performance brake piece.
The method of the present invention for preparing brake block, using the mould heat pressure method of forming, simple process, operability
Height, equipment cost is low, high production efficiency.Using friction material of the present invention and method, finally brake block coefficient of friction obtained is steady
Fixed, wear rate is smaller, and anti-shear performance is high, compensates for the domestic blank without brake block.
Specific embodiment
Illustrate embodiments of the present invention below by way of particular specific embodiment, those skilled in the art can be by this explanation
Other advantages and efficacy of the present invention can be easily understood for content disclosed by book.The present invention can also be by addition different specific
Embodiment is embodied or practiced, and the various details in this specification can also not carried on the back based on different viewpoints and application
From carrying out various modifications or alterations under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and reality
The feature applied in example can be combined with each other.
Conventional phenol-formaldehyde tree well-known to those skilled in the art can be used in phenolic resin and polyvinyl resin in the present invention
Rouge and polyvinyl resin material, and can be obtained by general commercial sources.Preferably, phenolic resin in following all embodiments
(125 DEG C) of flow distance are 50-70mm, and (150 DEG C) of gelation time are 90-150s, the polyethylene resin powder, average grain
Diameter 3-6um, specific surface area 7.6m3/ g, 335 DEG C of fusing point.Flow distance and gel time are with reference in GB/T 24411-2009 standard
The method of appendix A 2 and A4 measure.
Fiber dimensious well-known to those skilled in the art can be used in various fibers in the present invention, and can be by general
Commercial sources obtain.Preferably, the fibre length of steel fibre described in following all embodiments is 0.25-0.42mm, it is described to have
Machine fiber is Kafra fiber, fibre length 0.8-2mm；, the fibre length of the carbon fiber is 0.5-0.9mm, described
The fibre length of ceramic fibre is 80-300 μm, and the fibre length of the red copper fiber is 0.15-0.21mm, the aluminum fiber
Fibre length is 0.3-0.42mm.
Graphite, molybdenum disulfide in the present invention, oxidation network are green, yttrium stable zirconium oxide is also selected from this field conventional raw material,
And it can be obtained by general commercial sources.Preferably, the molybdenum disulfide granularity 300-400 mesh chosen in following all embodiments,
Yttrium stable zirconium oxide 300-350 mesh, graphite are soft graphite, and the granularity of soft graphite is 20-60 mesh.
The filler that inorganic filler in the present invention is well known to those skilled in the art, such as: barite, calcium carbonate, talcum
Powder, calcium sulfate crystal whiskers etc. or its any mixing, play filling effect, use calcium carbonate for inorganic filler in following embodiments,
Granularity 50-150 mesh.
The measurement of the relevant experimental datas such as coefficient of friction, shear strength, wear rate in the embodiment of the present invention in the application
It is to be executed referring to GB/T11834-2000 standard industry machinery with asbestos friction sheet.
It should be noted that it is all the same that other do not announce condition in the embodiment of the present invention other than the numerical value clearly provided.
Embodiment 1
The composition of raw materials of friction material: phenolic resin 6%, polyvinyl resin 9%, steel fibre 25%, organic fiber 7%,
Graphite 7%, molybdenum disulfide 7%, carbon fiber 5%, ceramic fibre 5%, chrome oxide green 5%, red copper fiber 8%, yttrium stablize oxidation
Zirconium 3.5%；Aluminum fiber 2.5%；Inorganic filler 25%.
Brake piece preparation method:
(1) it is equal that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio
It is even；
(2) hot-forming: the good friction material of mixture being packed into mold, shakeouts, is put into steel back, carries out hot-forming, pressure
Pressing pressure is 600kg/cm2, pressing time 6min, 180 DEG C of press temperature, after the time for reaching process stipulation, press is automatic
Die sinking, will be in transferred product to Revolving disc after demoulding；
(3) fluting, grinding angular surface: grinding processing is carried out to brake block crude product using combined grinding machine, expires friction material surface
Thickness, the depth of parallelism as defined in foot, planarity requirements；
(4) ink jet numbering machine and ink special, in steel back surface or friction material side, spray printing different clients stamp: are used
The processing lot number of different information and product, in order to product back-tracing.
Product coefficient of friction 0.37~0.41 made from the present embodiment, shear strength 15MPa, wear rate are 0.15~0.32
×10-7cm3/Nm。
Embodiment 2
The composition of raw materials of friction material: phenolic resin 8%, polyvinyl resin 7%, steel fibre 8%, organic fiber 9%, stone
Black 6%, molybdenum disulfide 4%, carbon fiber 3%, ceramic fibre 30%, chrome oxide green 3%, red copper fiber 5%, yttrium stable zirconium oxide
3%；Aluminum fiber 2%；Inorganic filler 12%.
Brake piece preparation method:
(1) it is equal that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio
It is even；
(2) hot-forming: the good friction material of mixture being packed into mold, shakeouts, is put into steel back, carries out hot-forming, pressure
Pressing pressure is 400kg/cm2, pressing time 5min, 130 DEG C of press temperature, after the time for reaching process stipulation, press is automatic
Die sinking, will be in transferred product to Revolving disc after demoulding；
(3) fluting, grinding angular surface: grinding processing is carried out to brake block crude product using combined grinding machine, expires friction material surface
Thickness, the depth of parallelism as defined in foot, planarity requirements；
(4) ink jet numbering machine and ink special, in steel back surface or friction material side, spray printing different clients stamp: are used
The processing lot number of different information and product, in order to product back-tracing.
Product coefficient of friction 0.39~0.43 made from the present embodiment, shear strength 10.6MPa, wear rate be 0.18~
0.35×10-7cm3/Nm。
Embodiment 3
The composition of raw materials of friction material: phenolic resin 5%, polyvinyl resin 6%, steel fibre 10%, organic fiber 14%,
Graphite 5%, molybdenum disulfide 3%, carbon fiber 5%, ceramic fibre 5%, chrome oxide green 3%, red copper fiber 25%, yttrium stablize oxidation
Zirconium 3%；Aluminum fiber 3%；Inorganic filler 13%.
Brake piece preparation method:
(1) it is equal that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio
It is even；
(2) hot-forming: the good friction material of mixture being packed into mold, shakeouts, is put into steel back, carries out hot-forming, pressure
Pressing pressure is 700kg/cm2, pressing time 7min, 200 DEG C of press temperature, after the time for reaching process stipulation, press is automatic
Die sinking, will be in transferred product to Revolving disc after demoulding；
(3) fluting, grinding angular surface: grinding processing is carried out to brake block crude product using combined grinding machine, expires friction material surface
Thickness, the depth of parallelism as defined in foot, planarity requirements；
(4) ink jet numbering machine and ink special, in steel back surface or friction material side, spray printing different clients stamp: are used
The processing lot number of different information and product, in order to product back-tracing.
Product coefficient of friction 0.39~0.43 made from the present embodiment, shear strength 17.2MPa, wear rate be 0.2~
0.41×10-7cm3/Nm。
Embodiment 4
The composition of raw materials of friction material: phenolic resin 7%, polyvinyl resin 12%, steel fibre 8%, organic fiber 7%,
Graphite 10%, molybdenum disulfide 5%, carbon fiber 2%, ceramic fibre 5%, chrome oxide green 4%, red copper fiber 8%, yttrium stablize oxidation
Zirconium 5%；Aluminum fiber 2%；Inorganic filler 25%.
Brake piece preparation method:
(1) it is equal that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio
It is even；
(2) hot-forming: the good friction material of mixture being packed into mold, shakeouts, is put into steel back, carries out hot-forming, pressure
Pressing pressure is 500kg/cm2, pressing time 5min, 150 DEG C of compacting temperature, after the time for reaching process stipulation, press is opened automatically
Mould, will be in transferred product to Revolving disc after demoulding；
(3) fluting, grinding angular surface: grinding processing is carried out to brake block crude product using combined grinding machine, expires friction material surface
Thickness, the depth of parallelism as defined in foot, planarity requirements；
(4) ink jet numbering machine and ink special, in steel back surface or friction material side, spray printing different clients stamp: are used
The processing lot number of different information and product, in order to product back-tracing.
Product coefficient of friction 0.41~0.47 made from the present embodiment, shear strength 9.2MPa, wear rate be 0.25~
0.45×10-7cm3/Nm。
Embodiment 5
The composition of raw materials of friction material: phenolic resin 15%, polyvinyl resin 6%, steel fibre 11%, organic fiber
10%, graphite 5%, molybdenum disulfide 3%, carbon fiber 7%, ceramic fibre 7%, chrome oxide green 8%, red copper fiber 5%, yttrium are stablized
Zirconium oxide 4%；Aluminum fiber 5%；Inorganic filler 14%.
Brake piece preparation method:
(1) it is equal that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio
It is even；
(2) hot-forming: the good friction material of mixture being packed into mold, shakeouts, is put into steel back, carries out hot-forming, pressure
Pressing pressure is 600kg/cm2, pressing time 6min, 150 DEG C of compacting temperature, after the time for reaching process stipulation, press is opened automatically
Mould, will be in transferred product to Revolving disc after demoulding；
(3) fluting, grinding angular surface: grinding processing is carried out to brake block crude product using combined grinding machine, expires friction material surface
Thickness, the depth of parallelism as defined in foot, planarity requirements；
(4) ink jet numbering machine and ink special, in steel back surface or friction material side, spray printing different clients stamp: are used
The processing lot number of different information and product, in order to product back-tracing.
Product coefficient of friction 0.41~0.44 made from the present embodiment, shear strength 10.1MPa, wear rate be 0.19~
0.42×10-7cm3/Nm。
Embodiment 6
The composition of raw materials of friction material: phenolic resin 5%, polyvinyl resin 6%, steel fibre 19%, organic fiber 7%,
Graphite 5%, molybdenum disulfide 3%, carbon fiber 2%, ceramic fibre 20%, chrome oxide green 3%, red copper fiber 10%, yttrium Stable Oxygen
Change zirconium 3%；Aluminum fiber 2%；Inorganic filler 15%.
The preparation method is the same as that of Example 1.
Product coefficient of friction 0.38~0.44 made from the present embodiment, shear strength 9.7MPa, wear rate be 0.21~
0.45×10-7cm3/Nm。
Embodiment 7
The composition of raw materials of friction material: phenolic resin 5%, polyvinyl resin 15%, steel fibre 10%, organic fiber 5%,
Graphite 8%, molybdenum disulfide 7%, carbon fiber 5%, ceramic fibre 10%, chrome oxide green 7%, red copper fiber 10%, yttrium Stable Oxygen
Change zirconium 3.5%；Aluminum fiber 2.5%；Inorganic filler 12%.
The preparation method is the same as that of Example 1.
Product coefficient of friction 0.35~0.39 made from the present embodiment, shear strength 12.4MPa, wear rate be 0.11~
0.23×10-7cm3/Nm。
Embodiment 8
The composition of raw materials of friction material: phenolic resin 7%, polyvinyl resin 4%, steel fibre 8%, organic fiber 15%,
Graphite 7%, molybdenum disulfide 10%, carbon fiber 4%, ceramic fibre 10%, chrome oxide green 10%, red copper fiber 10%, yttrium are stablized
Zirconium oxide 4%；Aluminum fiber 3%；Inorganic filler 8%.
The preparation method is the same as that of Example 1.
Product coefficient of friction 0.34~0.41 made from the present embodiment, shear strength 11.8MPa, wear rate be 0.15~
0.33×10-7cm3/Nm。
Comparative example 1
The composition of raw materials of friction material: phenolic resin 6%, polyvinyl resin 7%, steel fibre 15%, organic fiber 7%,
Graphite 8%, molybdenum disulfide 7%, carbon fiber 5%, ceramic fibre 0%, chrome oxide green 7%, red copper fiber 10%, yttrium stablize oxidation
Zirconium 3.5%；Aluminum fiber 2.5%；Inorganic filler 22%.
The preparation method is the same as that of Example 1.
Product coefficient of friction 0.30~0.43 obtained, shear strength 8.2MPa, wear rate are 0.25~0.9 × 10- 7cm3/Nm。
Comparative example 2
The composition of raw materials of friction material: phenolic resin 8%, polyvinyl resin 5%, steel fibre 12%, organic fiber 10%,
Graphite 7%, molybdenum disulfide 6%, carbon fiber 4%, ceramic fibre 11%, chrome oxide green 6%, red copper fiber 0%, yttrium stablize oxidation
Zirconium 4%；Aluminum fiber 3%；Inorganic filler 24%.
The preparation method is the same as that of Example 1.
Product coefficient of friction 0.30~0.43 obtained, shear strength 8.2MPa, wear rate are 0.25~0.9 × 10- 7cm3/Nm。
Comparative example 3
The composition of raw materials of friction material: phenolic resin 5%, polyvinyl resin 6%, steel fibre 20%, organic fiber 7%,
Graphite 10%, molybdenum disulfide 4%, carbon fiber 2%, ceramic fibre 8%, chrome oxide green 5%, red copper fiber 5%, yttrium stablize oxidation
Zirconium 0%；Aluminum fiber 3%；Inorganic filler 25%.
The preparation method is the same as that of Example 1.
Product coefficient of friction 0.31~0.55 obtained, shear strength 6.5MPa, wear rate are 0.35~1.2 × 10- 7cm3/Nm
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of friction material for brake block, which is characterized in that on the basis of the gross mass of the raw material components of friction material
Meter, the friction material includes following raw material components and mass percentage: phenolic resin 5%-15%, polyvinyl resin 4%-
15%, steel fibre 8%-25%, organic fiber 5%-15%, graphite 5%-10%, molybdenum disulfide 3%-10%, carbon fiber 2%-
7%, ceramic fibre 5%-30%, chrome oxide green 3%-10%, red copper fiber 5%-25%, yttrium stable zirconium oxide 3%-5%；Aluminium
Fiber 2%-5%；Inorganic filler 10%-25%.
2. the friction material according to claim 1 for brake block, which is characterized in that the quality of the polyvinyl resin
Percentage composition is 6%~12%.
3. the friction material according to claim 1 for brake block, which is characterized in that the quality hundred of the organic fiber
Dividing content is 7%~14%.
4. the friction material according to claim 1 for brake block, which is characterized in that the quality hundred of the molybdenum disulfide
Dividing content is 3%~7%.
5. the friction material according to claim 1 for brake block, which is characterized in that the quality hundred of the chrome oxide green
Dividing content is 3%~8%.
6. the friction material according to claim 1 for brake block, which is characterized in that the inorganic filler is attached most importance to crystalline substance
Stone, calcium carbonate, talcum powder, any one or a few mixing in calcium sulfate crystal whiskers.
7. purposes of any one of claim 1 to 6 friction material in brake block.
8. a kind of brake block, including friction material and steel back as described in any one of claim 1 to 6.
9. the method for preparing brake block as claimed in claim 8, which comprises the following steps:
(1) it is uniform that each raw material component of friction material the raw material mixture of friction material: is put into mixture in batch mixer according to the ratio；
(2) hot-forming: the good friction material of mixture being packed into mold, shakeouts, is put into steel back, carries out hot-forming, demoulding.
10. according to the method described in claim 9, it is characterized in that, pressing pressure when hot-forming in step (2) is 400-
700kg/cm2, pressing time 5-7min, 130-200 DEG C of press temperature.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112876775A (en) * | 2019-11-29 | 2021-06-01 | 合肥杰事杰新材料股份有限公司 | High-wear-resistance polypropylene material and preparation method thereof |
| CN113502030A (en) * | 2021-03-24 | 2021-10-15 | 浙江杭摩欧亿汽车零部件有限公司 | Friction material for automobile disc-drum parking brake shoe and preparation method thereof |
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| CN109667861B (en) | 2020-11-27 |
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