CN105546002A - Manufacturing method for environment-friendly high-performance brake pad - Google Patents
Manufacturing method for environment-friendly high-performance brake pad Download PDFInfo
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- CN105546002A CN105546002A CN201610108446.5A CN201610108446A CN105546002A CN 105546002 A CN105546002 A CN 105546002A CN 201610108446 A CN201610108446 A CN 201610108446A CN 105546002 A CN105546002 A CN 105546002A
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- brake block
- temperature
- fiber
- friction material
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- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 239000000835 fiber Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 40
- 239000002783 friction material Substances 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 26
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 22
- 239000004917 carbon fiber Substances 0.000 claims description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 22
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 20
- 229920001568 phenolic resin Polymers 0.000 claims description 20
- 239000004760 aramid Substances 0.000 claims description 19
- 229920003235 aromatic polyamide Polymers 0.000 claims description 19
- 239000005011 phenolic resin Substances 0.000 claims description 19
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 18
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 18
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 16
- 239000000391 magnesium silicate Substances 0.000 claims description 16
- 235000019792 magnesium silicate Nutrition 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 14
- 239000000395 magnesium oxide Substances 0.000 claims description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 14
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 14
- 239000010453 quartz Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 11
- 229920001778 nylon Polymers 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000009472 formulation Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000001149 thermolysis Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 description 2
- 239000004067 bulking agent Substances 0.000 description 2
- -1 bulletproof article Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 229910000836 magnesium aluminium oxide Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000433 Lyocell Polymers 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012491 analyte Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- CVSVTCORWBXHQV-UHFFFAOYSA-N creatine Chemical compound NC(=[NH2+])N(C)CC([O-])=O CVSVTCORWBXHQV-UHFFFAOYSA-N 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000018984 mastication Effects 0.000 description 1
- 238000010077 mastication Methods 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N propylene glycol Substances CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009736 wetting Methods 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
- F16D69/027—Compositions based on metals or inorganic oxides
- F16D69/028—Compositions based on metals or inorganic oxides containing fibres
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1436—Composite particles, e.g. coated particles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a manufacturing method for an environment-friendly high-performance brake pad. Red copper fibers are replaced, so that the environmental performance of the brake pad is effectively improved. Meanwhile, the ratio of all raw materials in a formulation is improved, and corresponding manufacturing procedure conditions are set, so that the stability of the wear-resisting property, low-noise property and friction property of the brake pad is improved.
Description
Technical field
The present invention relates to a kind of preparation method of brake block, belong to field of power machinery technology, be specifically related to a kind of preparation method of environment-friendly type high performance brake block.
Background technique
There is the friction material of the multiple break for heavy machineries such as mine hoist, heavy engineering machinery or heavy punch presses in the market, these friction materials usually by reinforcing material, Bond, stuffing and frictional property regulator four major part form, Bond is the important component part in friction material, affect friction material heat fade performance, restorability and abrasion resistance properties, current common use by epoxy resin and phenolic resin etc.Reinforcing material mainly plays strengthening agent in friction material, generally uses at present and adds asbestos, copper fiber etc.Bulking agent, mainly for improving friction torque and the friction factor of friction material, increases the wear-resistant coefficient of friction material, is usually realized by adding the metallic dusts such as copper powder.Frictional property regulator carries out noise abatement mainly through graphite etc. and improves the wearing coefficient of friction material.
But along with people are to the raising of the environmental-protecting performance of braking quality and brake block, in traditional brake block friction material, the content of copper is more and more restricted.It is reported, the sub-state of U.S. markon welfare and the State of Washington have just limited in 2010 and have finally prohibitted the use the regulation of copper and heavy metal to have passed state law in friction material, wherein specify: be less than 5%(weight percentage to copper content requirement in 2021), 0.5%(weight percentage is less than to copper content requirement in 2025), actual be prohibit the use copper in 2025 later.
Summary of the invention
Based on the technical problem that background technique exists, the present invention proposes a kind of heavy metal that do not contain especially without the preparation method of the environment-friendly type high performance brake block of copper.
Technological scheme of the present invention is as follows:
A preparation method for environment-friendly type high performance brake block, described brake block is formed through compacting by friction material; Comprise the following steps:
A, batching: each raw material of friction material press formula metering accurately after, quartz, magnesium oxide, molybdenum disulfide, aramid fibre, ceramic fiber, nylon fiber, carbon fiber, barium sulphate, magnesium silicate, aluminium oxide are added in stirrer;
B, batch mixing: above-mentioned raw materials is mixed;
C, oven dry: the raw material after mixing is put into baking oven, be warming up to 180-200 DEG C gradually with the speed of 5-8 DEG C/min, and keep the temperature 2-3h of 180-200 DEG C.
D, compacting: phenolic resin and 1,2-PD are joined in the raw material after oven dry, after stirring, send in die arrangement, setting press time, temperature and pressure, suppress.
E, heat treatment shaping: by the temperature in baking oven to 170-200 DEG C, keep 3-5h;
F, plain grinding: plain grinding is carried out on the two sides of brake block, require that two sides is parallel, error is not more than 0.05%;
G, detection, packaging.
Preferably, each weight percentages of components of the friction material of described brake block is: quartzy 3-7%, magnesium oxide 3-8%, molybdenum disulfide 5-10%, aramid fibre 2-5%, ceramic fiber 3-7%, nylon fiber 2-5%, carbon fiber 7-10%, barium sulphate 10-20%, magnesium silicate 3-10%, aluminium oxide 2-5%, phenolic resin 25-35%, 1,2-PD 2-5%.
Preferably, to suppress the brake block of 7.0mm thickness in described steps d, the setting parameter of die arrangement is: press time 15-30min, temperature 130-160 DEG C, pressure 30-40MPa.
Aramid fibre is a kind of novel high-tech synthetic fiber, the premium properties such as have superhigh strength, high-modulus and high temperature resistant, acid-fast alkali-proof, lightweight, insulation, anti-aging, life cycle is long, is widely used in the fields such as composite material, bulletproof article, building materials, special type protection clothes, electronic equipment.Aramid fiber full name is " PPTA ", a kind of novel high-tech synthetic fiber, there is superhigh strength, high-modulus and high temperature resistant, acid-fast alkali-proof, the premium properties such as lightweight, its intensity is 5 ~ 6 times of steel wire, and modulus is 2 ~ 3 times of steel wire or glass fibre, and toughness is 2 times of steel wire, and weight is only about 1/5 of steel wire, at the temperature of 560 degree, do not decompose, do not melt.It has good insulating properties and aging quality resistance, has very long life cycle.The discovery of aramid fiber, is considered to material circle very important historical progress.
The outstanding advantages of aramid fibre has good thermostability, when temperature reaches 500 DEG C, just there is thermolysis, and the density ratio asbestos fiber of aramid fibre is little, aramid fibre is cut into short fibre, through grinding fibrillation, makes its surface in fluffy filoplume shape, fiber surface area increases, and fiber after treatment has good adsorptivity.In use, aramid fibre presents stable friction factor, and wear rate is low, the characteristic that intensity is good.
Carbon fiber (carbonfiber is called for short CF) is the tencel material of the high strength of a kind of carbon content more than 95%, high modulus fibre.It to be piled up along fiber axial direction by organic fibers such as flake graphite crystallites to form, the micro crystal graphite material obtained through carbonization and graphitization processing.Carbon fiber " soft outside but hard inside ", quality is lighter than metallic aluminium, but intensity is higher than iron and steel, and has characteristic that is corrosion-resistant, high-modulus, defence and military and civilian in be all important materials.It not only has the intrinsic intrinsic property of material with carbon element, has both again the soft workability of textile fibre, is reinforcing fiber of new generation.Carbon fiber has many premium properties, axial strength and the modulus of carbon fiber are high, density is low, higher than performance, without creep, superhigh temperature resistant under non-oxidizing atmosphere, fatigue resistance is good, specific heat and electric conductivity are between nonmetal and metal, thermal expansion coefficient is little and have anisotropy, good corrosion resistance, and X-ray transparent is good.Good electrical and thermal conductivity performance, electromagnetic wave shielding are good.Carbon fiber strength is high, high-temperature behavior good, wear-resistant and have certain sound absorption function, but deformability is poor.
Reinforcing fiber is the important component of friction material, has certain intensity and toughness, can play skeleton function, to the friction and wear behavior important role of material.With aramid fibre, red copper fiber and the carbon fiber strengthening agent as mechanical strength, braking force in the present invention, adopt aramid fibre, red copper fiber and carbon fiber as strengthening agent, brake block resistance to high temperature is good, hardness is suitable, effectively can reduce trembling of causing because of adhesive wear, be conducive to noise when reducing friction.
Molybdenum disulfide is important solid lubricant, under being specially adapted to High Temperature High Pressure.It is described as " senior solid oil king ".Molybdenum disulfide is the solid powder changing structure of molecule by natural molybdenum concntrate powder after chemical purification and make.This product look black is slightly with silver grey, has metallic lustre, and that touches has soapy feeling, water insoluble.Product has good dispersion, inadherent advantage, can be added in various grease, forms exhausted inadherent colloidal state, can increase lubricity and the extreme pressure property of grease.Also the machine work state of high temperature, high pressure, high rotating speed high load is applicable to, the extension device life-span.
Antifriction when molybdenum disulfide is low temperature for friction material major function, increase during high temperature and rub, ignition loss is little, volatile in friction material.
Phenolic resin: phenolic resin is also bakelite, also known as phenolic moulding powder.Originally be colourless or khaki transparency, market sale often adds colorant and in the color such as red, yellow, black, green, brown, blue, has particle, Powdered.Weak acid resistant and weak base, meet strong acid and decompose, and meets highly basic and corrode.Water insoluble, be dissolved in the organic solvent such as acetone, alcohol.Phenol aldehyde or derivatives thereof polycondensation and obtaining.The important application of one, phenolic resin is exactly as Bond.Phenolic resin is a kind of multi-functional, with various organic and mineral filler can be compatible material.Design correct phenolic resin, wetting speed is fast especially.And can be grinding tool, refractory material after cross-linking, friction material and phenolic moulding powder provide required mechanical strength, resistance to heat and electrical property.In the present invention, phenolic resin is Bond.
For general friction material, when friction slip face reaches under the harsh conditions of more than 300 DEG C high temperature, because the aqueous analyte that phenolic resin thermolysis generates etc. can be present on slip surface as Lubrication Composition, the phenomenon that friction factor significantly reduces therefore easily can be produced.Add magnesium silicate in the present invention, the aqueous pyrolysate produced because of thermolysis etc. are easily adsorbed in the pore of the magnesium silicate with bigger serface, thus suppress friction factor significantly to reduce.
Quartz: the mineral be made up of silica, chemical formula SiO2., because containing micro-pigment ion or finely divided inclusion, or there is colour center and be shades of colour, and transparency is reduced in pure quartzy water white transparency; Vitreous lustre, fracture is greasy luster.Hardness 7; Without cleavage; Conchoidal fracture.Proportion 2.65.Tool piezoelectricity.Silica sand is a kind of silicate mineral of hard, wear-resisting, stable chemical performance, and its main mineral constituent is SiO2.The color of silica sand is varied is often ivory, colourless, grey.Hardness is 7, and property is crisp, without cleavage, and conchoidal fracture.Greasy luster, density is 2.65 grams/cc, and its chemistry, calorifics and mechanical property have obvious anisotropy, are insoluble to acid, are slightly soluble in KOH solution, fusing point 1750 DEG C.Tool piezoelectricity.
In the present invention, quartz, magnesium oxide, aluminium oxide and barium sulphate are bulking agent, and Main Function is the friction torque and the friction factor that improve friction material, increases the wear-resistant coefficient of friction material.
Red copper fiber has the hardness of metal simple-substance copper, wear-resistant, the advantages such as thermal conductivity is good, in brake block, add red copper fiber can play the stability improving friction factor, reduce the effect of wear rate, meanwhile, the red copper fiber of hot mastication can also play certain compensating action to the tackiness agent lost in brake process.The present invention, on the basis of original low copper formula, eliminates red copper fiber, uses ceramic fiber and nylon fiber to do alternative, add 1 simultaneously, 2-propylene glycol, not only can play certain compensating action to the tackiness agent lost in brake process, can also play certain low temperature resistant effect.
In the present invention, molybdenum disulfide and magnesium silicate and carbon fiber combine, molybdenum disulfide can make full use of the hollow structure of the bigger serface of magnesium silicate, what spread is better, lubrication effect is better, and carbon fiber is under the lubrication of molybdenum disulfide, overcome its deformability poor shortcoming, substantially increase the abrasion resistance properties of brake block, extend the working life of brake block.
The main component of quartz is silica, and chemical reaction at high temperature can be there is in magnesium oxide, aluminium oxide and silica three kinds of granules, generate the crystalline structure being similar to spinel, the mohs hardness of spinel reaches 8, although the content of above-mentioned three kinds of particles is less in the present invention, but in the process that brake block uses, under producing high temperature and condition of high voltage, micro-spinel crystal structure can be generated, greatly can strengthen the inner link strength of each raw material of brake block and the abrasion resistance properties of disc surface.
Usefulness of the present invention is: by substituting red copper fiber, effectively improve the environmental-protecting performance of brake block, simultaneously by improving the process conditions of the proportioning of each raw material and the corresponding of setting in formula, improve the stability of the wear-resisting property of brake block, low noise properties and frictional behaviour.
Embodiment
Embodiment 1
A preparation method for environment-friendly type high performance brake block, described brake block is formed through compacting by friction material.
Comprise the following steps:
A, batching: each raw material of friction material press formula metering accurately after, quartz, magnesium oxide, molybdenum disulfide, aramid fibre, ceramic fiber, nylon fiber, carbon fiber, barium sulphate, magnesium silicate, aluminium oxide are added in stirrer;
B, batch mixing: above-mentioned raw materials is mixed;
C, oven dry: the raw material after mixing is put into baking oven, be warming up to 180 DEG C gradually with the speed of 5 DEG C/min, and keep the temperature 2h of 180 DEG C.
D, compacting: phenolic resin and 1,2-PD are joined in the raw material after oven dry, after stirring, send in die arrangement, setting press time, temperature and pressure, suppress.
E, heat treatment shaping: by the temperature to 170 in baking oven DEG C, keep 3h;
F, plain grinding: plain grinding is carried out on the two sides of brake block, require that two sides is parallel, error is not more than 0.05%;
G, detection, packaging.
Each weight percentages of components of the friction material of described brake block is: quartz 7%, magnesium oxide 5%, molybdenum disulfide 7%, aramid fibre 3%, ceramic fiber 5%, nylon fiber 3%, carbon fiber 7%, barium sulphate 17%, magnesium silicate 8%, aluminium oxide 3%, phenolic resin 32%, 1,2-PD 3%.
Suppress the brake block of 7.0mm thickness in described steps d, the setting parameter of die arrangement is: press time 25min, temperature 130 DEG C, pressure 35MPa.
Embodiment 2
A preparation method for environment-friendly type high performance brake block, described brake block is formed through compacting by friction material.
Comprise the following steps:
A, batching: each raw material of friction material press formula metering accurately after, quartz, magnesium oxide, molybdenum disulfide, aramid fibre, ceramic fiber, nylon fiber, carbon fiber, barium sulphate, magnesium silicate, aluminium oxide are added in stirrer;
B, batch mixing: above-mentioned raw materials is mixed;
C, oven dry: the raw material after mixing is put into baking oven, be warming up to 180 DEG C gradually with the speed of 7 DEG C/min, and keep the temperature 3h of 180 DEG C.
D, compacting: joined by phenolic resin in the raw material after oven dry, after stirring, send in die arrangement, setting press time, temperature and pressure, suppress.
E, heat treatment shaping: by the temperature to 170 in baking oven DEG C, keep 5h;
F, plain grinding: plain grinding is carried out on the two sides of brake block, require that two sides is parallel, error is not more than 0.05%;
G, detection, packaging.
Each weight percentages of components of the friction material of described brake block is: quartz 3%, magnesium oxide 5%, molybdenum disulfide 7%, aramid fibre 3%, ceramic fiber 5%, nylon fiber 5%, carbon fiber 10%, barium sulphate 15%, magnesium silicate 10%, aluminium oxide 3%, phenolic resin 29%, 1,2-PD 5%.
Suppress the brake block of 7.0mm thickness in described steps d, the setting parameter of die arrangement is: press time 25min, temperature 150 DEG C, pressure 30MPa.
Embodiment 3
A preparation method for environment-friendly type high performance brake block, described brake block is formed through compacting by friction material.
Comprise the following steps:
A, batching: each raw material of friction material press formula metering accurately after, quartz, magnesium oxide, molybdenum disulfide, aramid fibre, red copper fiber, carbon fiber, barium sulphate, magnesium silicate, aluminium oxide are added in stirrer;
B, batch mixing: above-mentioned raw materials is mixed;
C, oven dry: the raw material after mixing is put into baking oven, be warming up to 190 DEG C gradually with the speed of 5 DEG C/min, and keep the temperature 2h of 190 DEG C.
D, compacting: joined by phenolic resin in the raw material after oven dry, after stirring, send in die arrangement, setting press time, temperature and pressure, suppress.
E, heat treatment shaping: by the temperature to 180 in baking oven DEG C, keep 4h;
F, plain grinding: plain grinding is carried out on the two sides of brake block, require that two sides is parallel, error is not more than 0.05%;
G, detection, packaging.
Preferably, each weight percentages of components of the friction material of described brake block is: quartz 5%, magnesium oxide 8%, molybdenum disulfide 5%, aramid fibre 5%, ceramic fiber 7%, nylon fiber 5%, carbon fiber 10%, barium sulphate 16%, magnesium silicate 5%, aluminium oxide 4%, phenolic resin 25%, 1,2-PD 5%.
Suppress the brake block of 7.0mm thickness in described steps d, the setting parameter of die arrangement is: press time 25min, temperature 140 DEG C, pressure 30MPa.
Be that the sample of examination criteria to embodiment 1-3 detects with GB/T11834-2011 " industrial and agricultural machinery friction plate " NBS:
This detects data only for above-mentioned detection sample.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technological scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. a preparation method for environment-friendly type high performance brake block, is characterized in that, described brake block is formed through compacting by friction material; Comprise the following steps:
A, batching: each raw material of friction material press formula metering accurately after, quartz, magnesium oxide, molybdenum disulfide, aramid fibre, ceramic fiber, nylon fiber, carbon fiber, barium sulphate, magnesium silicate, aluminium oxide are added in stirrer;
B, batch mixing: above-mentioned raw materials is mixed;
C, oven dry: the raw material after mixing is put into baking oven, be warming up to 180-200 DEG C gradually with the speed of 5-8 DEG C/min, and keep the temperature 2-3h of 180-200 DEG C;
D, compacting: phenolic resin and 1,2-PD are joined in the raw material after oven dry, after stirring, send in die arrangement, setting press time, temperature and pressure, suppress;
E, heat treatment shaping: by the temperature in baking oven to 170-200 DEG C, keep 3-5h;
F, plain grinding: plain grinding is carried out on the two sides of brake block, require that two sides is parallel, error is not more than 0.05%;
G, detection, packaging.
2. the preparation method of environment-friendly type high performance brake block as claimed in claim 1, it is characterized in that, each weight percentages of components of the friction material of described brake block is: quartzy 3-7%, magnesium oxide 3-8%, molybdenum disulfide 5-10%, aramid fibre 2-5%, ceramic fiber 3-7%, nylon fiber 2-5%, carbon fiber 7-10%, barium sulphate 10-20%, magnesium silicate 3-10%, aluminium oxide 2-5%, phenolic resin 25-35%, 1,2-PD 2-5%.
3. the preparation method of environment-friendly type high performance brake block as claimed in claim 1, it is characterized in that, suppress the brake block of 7.0mm thickness in described steps d, the setting parameter of die arrangement is: press time 15-30min, temperature 130-160 DEG C, pressure 30-40MPa.
4. the preparation method of environment-friendly type high performance brake block as claimed in claim 1, it is characterized in that, described brake block is formed through compacting by friction material; Comprise the following steps:
A, batching: each raw material of friction material press formula metering accurately after, quartz, magnesium oxide, molybdenum disulfide, aramid fibre, red copper fiber, carbon fiber, barium sulphate, magnesium silicate, aluminium oxide are added in stirrer;
B, batch mixing: above-mentioned raw materials is mixed;
C, oven dry: the raw material after mixing is put into baking oven, be warming up to 180 DEG C gradually with the speed of 5 DEG C/min, and keep the temperature 2h of 180 DEG C;
D, compacting: phenolic resin is joined in the raw material after oven dry, after stirring, send in die arrangement, setting press time, temperature and pressure, suppress;
E, heat treatment shaping: by the temperature to 170 in baking oven DEG C, keep 3h;
F, plain grinding: plain grinding is carried out on the two sides of brake block, require that two sides is parallel, error is not more than 0.05%;
G, detection, packaging;
Each weight percentages of components of the friction material of described brake block is: quartz 7%, magnesium oxide 5%, molybdenum disulfide 7%, aramid fibre 3%, ceramic fiber 5%, nylon fiber 3%, carbon fiber 7%, barium sulphate 17%, magnesium silicate 8%, aluminium oxide 3%, phenolic resin 32%, 1,2-PD 3%;
Suppress the brake block of 7.0mm thickness in described steps d, the setting parameter of die arrangement is: press time 25min, temperature 130 DEG C, pressure 35MPa.
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| CN201610108446.5A CN105546002A (en) | 2016-02-29 | 2016-02-29 | Manufacturing method for environment-friendly high-performance brake pad |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989016A (en) * | 1995-09-21 | 1997-03-31 | Sumitomo Electric Ind Ltd | Disk brake pad |
| CN1468890A (en) * | 2003-06-12 | 2004-01-21 | 山东大学 | Carbon fiber reinforced friction material and its prepn |
| CN102858903A (en) * | 2010-08-09 | 2013-01-02 | 日立化成工业株式会社 | Friction material composition, and friction material and friction member using same |
-
2016
- 2016-02-29 CN CN201610108446.5A patent/CN105546002A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989016A (en) * | 1995-09-21 | 1997-03-31 | Sumitomo Electric Ind Ltd | Disk brake pad |
| CN1468890A (en) * | 2003-06-12 | 2004-01-21 | 山东大学 | Carbon fiber reinforced friction material and its prepn |
| CN102858903A (en) * | 2010-08-09 | 2013-01-02 | 日立化成工业株式会社 | Friction material composition, and friction material and friction member using same |
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Application publication date: 20160504 |