CN112324825A - High-friction-performance environment-friendly brake pad - Google Patents
High-friction-performance environment-friendly brake pad Download PDFInfo
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- CN112324825A CN112324825A CN202011200050.6A CN202011200050A CN112324825A CN 112324825 A CN112324825 A CN 112324825A CN 202011200050 A CN202011200050 A CN 202011200050A CN 112324825 A CN112324825 A CN 112324825A
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- parts
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- fiber
- raw material
- brake pad
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Links
- 239000000835 fiber Substances 0.000 claims abstract description 90
- 239000002994 raw material Substances 0.000 claims abstract description 65
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 36
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 35
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000003365 glass fiber Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 18
- 239000010439 graphite Substances 0.000 claims abstract description 18
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004952 Polyamide Substances 0.000 claims abstract description 17
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 17
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011324 bead Substances 0.000 claims abstract description 17
- 239000006229 carbon black Substances 0.000 claims abstract description 17
- 239000003822 epoxy resin Substances 0.000 claims abstract description 17
- 235000019359 magnesium stearate Nutrition 0.000 claims abstract description 17
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 17
- 239000005011 phenolic resin Substances 0.000 claims abstract description 17
- 229920002647 polyamide Polymers 0.000 claims abstract description 17
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 17
- 239000011591 potassium Substances 0.000 claims abstract description 17
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 16
- 239000004917 carbon fiber Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 16
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000009987 spinning Methods 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 3
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000002783 friction material Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052599 brucite Inorganic materials 0.000 description 1
- 239000002008 calcined petroleum coke Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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—Compositions of linings; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
-
- 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—Compositions 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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0008—Ferro
- F16D2200/0021—Steel
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0095—Mixing an aqueous slurry of fibres with a binder, e.g. papermaking process
Abstract
The invention belongs to the field of brake pads, in particular to a high-friction environment-friendly brake pad, which aims at solving the problems of poor thermal stability and low friction performance of the conventional automobile brake pad, and provides the following scheme, wherein the brake pad comprises the following raw materials in parts by weight: 30-40 parts of non-woven fabric product recycled modified short fiber, 10-15 parts of carbon fiber, 20-30 parts of phenolic resin, 5-10 parts of fluororubber, 10-15 parts of graphite, 5-10 parts of steel fiber, 1-5 parts of aluminum silicate fiber, 10-15 parts of filler, 5-10 parts of floating bead, 5-10 parts of potassium hexatitanate whisker, 5-10 parts of calcium sulfate whisker, 10-15 parts of glass fiber, 1-5 parts of organic silicon modified epoxy resin, 2-7 parts of magnesium stearate, 6-12 parts of nano aluminum oxide, 7-15 parts of polyamide fiber and 10-15 parts of wear-resistant carbon black.
Description
Technical Field
The invention relates to the field of brake pads, in particular to an environment-friendly brake pad with high friction performance.
Background
The automobile brake pad is also called as automobile brake shoe, and refers to a friction material fixed on a brake drum or a brake disc rotating with a wheel, wherein a friction lining and a friction pad bear external pressure to generate friction action so as to achieve the aim of reducing the speed of the automobile.
The friction material utilization of the non-woven fabric product garbage is carried out by our company according to the aim of an environment-friendly manufacturer. However, polypropylene and polyethylene have low heat resistance, low hardness, sensitivity to heat, and easy creep, and a single polyethylene material is often difficult to meet the requirements of special working conditions such as loading and high speed, so that the resource recycling difficulty is high on the premise of not reducing the performance of the brake pad.
Disclosure of Invention
The invention aims to solve the technical problem of resource recovery in the prior art, reduce the material cost of the automobile brake pad, and overcome the defects of poor thermal stability and low friction performance of the existing organic fiber brake pad of the automobile.
The invention provides a high-friction-performance environment-friendly brake pad which comprises the following raw materials in parts by weight: 30-40 parts of non-woven fabric product recycled modified short fiber, 10-15 parts of carbon fiber, 20-30 parts of phenolic resin, 5-10 parts of fluororubber, 10-15 parts of graphite, 5-10 parts of steel fiber, 1-5 parts of aluminum silicate fiber, 10-15 parts of filler, 5-10 parts of floating bead, 5-10 parts of potassium hexatitanate whisker, 5-10 parts of calcium sulfate whisker, 10-15 parts of glass fiber, 1-5 parts of organic silicon modified epoxy resin, 2-7 parts of magnesium stearate, 6-12 parts of nano aluminum oxide, 7-15 parts of polyamide fiber and 10-15 parts of wear-resistant carbon black; the preparation method of the non-woven fabric product recyclate modified short fiber comprises the following steps: A. rinsing and drying the recovered non-woven fabric product; B. feeding the dried non-woven fabric product recovered material into a crusher to cut into 30-50 meshes of crushed material, C, feeding 20-30 parts of ultra-short glass fiber with the length of 0.15-0.5 mm, 0.5-1 part of maleic anhydride grafted polypropylene, 0.5-1 part of polymethylphenyl siloxane and 0.2-0.5 part of antioxidant into a high-speed dispersion machine to be mixed, immediately feeding the mixture into a screw extruder to be melted after mixing, and spinning and quenching the extruded melt through a spinning box to prepare modified long fiber with the diameter of 0.5-1.0 mm; D. and cutting the modified long fibers to prepare short fibers, thereby obtaining the non-woven fabric product recycled modified short fibers.
Preferably, the length of the ultra-short glass fiber is 0.15-0.5 mm.
Preferably, the glass fiber has a length of 6 to 10 mm.
Preferably, the length of the non-woven fabric product recyclate modified short fiber is 6-10 mm.
Preferably, the feed comprises the following raw materials in parts by weight: 32-37 parts of non-woven fabric product recycled modified short fibers, 11-13 parts of carbon fibers, 21-20 parts of phenolic resin, 6-9 parts of fluororubber, 11-12 parts of graphite, 6-9 parts of steel fibers, 2-3 parts of aluminum silicate fibers, 11-13 parts of fillers, 6-8 parts of floating beads, 6-8 parts of potassium hexatitanate whiskers, 6-8 parts of calcium sulfate whiskers, 11-13 parts of glass fibers, 2-3 parts of organic silicon modified epoxy resin, 3-5 parts of magnesium stearate, 9-11 parts of nano aluminum oxide, 8-12 parts of polyamide fibers and 11-13 parts of wear-resistant carbon black.
Preferably, the feed comprises the following raw materials in parts by weight: 35 parts of non-woven fabric product recycled modified short fibers, 12 parts of carbon fibers, 25 parts of phenolic resin, 7 parts of fluororubber, 12 parts of graphite, 7 parts of steel fibers, 3 parts of aluminum silicate fibers, 12 parts of fillers, 7 parts of floating beads, 7 parts of potassium hexatitanate whiskers, 7 parts of calcium sulfate whiskers, 12 parts of glass fibers, 3 parts of organic silicon modified epoxy resin, 4 parts of magnesium stearate, 9 parts of nano aluminum oxide, 10 parts of polyamide fibers and 12 parts of wear-resistant carbon black.
The preparation method of the environment-friendly brake pad with high friction performance comprises the following steps:
s1: putting the non-woven fabric product recycled modified short fibers, the carbon fibers, the phenolic resin, the fluororubber, the graphite, the steel fibers, the aluminum silicate fibers and the filler into a mixer, and uniformly mixing to obtain a first raw material;
s2: putting floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, organic silicon modified epoxy resin, magnesium stearate, nano alumina, polyamide fibers and wear-resistant carbon black into a mixer for mixing to obtain a second raw material, and uniformly mixing the second raw material with the first raw material to obtain a third raw material;
s3: adding the third raw material into a mold, putting the third raw material into a forming mold for press forming, then putting the third raw material and a steel backing into a flat vulcanizing machine after compounding, and keeping the third raw material and the steel backing for 30 minutes under the conditions of high temperature of 350 ℃ and pressure of 25MPa to obtain a blank;
s4: and polishing, heat treating and spraying the blank to obtain the environment-friendly brake pad with high friction performance.
Preferably, in the step S1, the non-woven fabric product recycled modified short fibers, the carbon fibers, the phenolic resin, the fluororubber, the graphite, the steel fibers, the aluminum silicate fibers and the filler are put into a mixer to be uniformly mixed, wherein the mixing speed is 300-400r/min, and the mixing time is 20-30 min.
Preferably, in S2, the floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, silicone-modified epoxy resin, magnesium stearate, nano-alumina, polyamide fibers, and wear-resistant carbon black are put into a mixer and mixed to obtain a second raw material, the second raw material is uniformly mixed with the first raw material to obtain a third raw material, the mixing speed is 300-400r/min, and the mixing time is 40-50 min.
Preferably, in the step S4, the polished blank is placed into a heat treatment box, the temperature in the heat treatment box is 120-150 ℃, and the heat treatment time is 5-7 h.
The invention has the beneficial effects that:
the main friction material is prepared by reprocessing a non-woven fabric recycled product, and has good thermal stability by matching with floating beads, potassium hexatitanate whiskers and calcium sulfate whiskers as raw materials;
by taking glass fiber, organic silicon modified epoxy resin and magnesium stearate as raw materials, the heat resistance can be improved;
the wear-resisting performance can be improved by taking graphite, polyamide fiber, wear-resisting carbon black, steel fiber and aluminum silicate fiber as raw materials, and the high-friction-resistance wear-resisting material has high friction performance;
the invention reduces the production cost of the product and improves the product performance while reducing the plastic and medical wastes, and has good friction and thermal stability.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a high-friction-performance environment-friendly brake pad which comprises the following raw materials in parts by weight: 30 parts of non-woven fabric product recycled modified short fibers, 10 parts of carbon fibers, 20 parts of phenolic resin, 5 parts of fluororubber, 10 parts of graphite, 5 parts of steel fibers, 1 part of aluminum silicate fibers, 10 parts of fillers, 5 parts of floating beads, 5 parts of potassium hexatitanate whiskers, 5 parts of calcium sulfate whiskers, 10 parts of glass fibers, 1 part of organic silicon modified epoxy resin, 2 parts of magnesium stearate, 6 parts of nano aluminum oxide, 7 parts of polyamide fibers and 10 parts of wear-resistant carbon black;
the length of the ultra-short glass fiber is 0.15-0.5 mm, the length of the glass fiber is 6-10 mm, and the length of the non-woven fabric product recycled modified short fiber is 6-10 mm. The preparation method comprises the following steps:
s1: putting the non-woven fabric product recycled modified short fibers, the carbon fibers, the phenolic resin, the fluororubber, the graphite, the steel fibers, the aluminum silicate fibers and the filler into a mixer, and uniformly mixing at the mixing speed of 300r/min for 20min to obtain a first raw material;
s2: putting floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, organic silicon modified epoxy resin, magnesium stearate, nano alumina, polyamide fibers and wear-resistant carbon black into a mixer for mixing to obtain a second raw material, and uniformly mixing the second raw material with the first raw material to obtain a third raw material, wherein the mixing speed is 300r/min, and the mixing time is 40 min;
s3: adding the third raw material into a mold, putting the third raw material into a forming mold for press forming, then putting the third raw material and a steel backing into a flat vulcanizing machine after compounding, and keeping the third raw material and the steel backing for 30 minutes under the conditions of high temperature of 350 ℃ and pressure of 25MPa to obtain a blank;
s4: and (3) polishing, carrying out heat treatment and spraying on the blank to obtain the high-friction-performance environment-friendly brake pad, wherein during heat treatment, the polished blank is placed into a heat treatment box, the temperature in the heat treatment box is 120 ℃, and the heat treatment time is 5 hours.
Example two
The invention provides a high-friction-performance environment-friendly brake pad which comprises the following raw materials in parts by weight: 35 parts of non-woven fabric product recycled modified short fibers, 12 parts of carbon fibers, 25 parts of phenolic resin, 7 parts of fluororubber, 12 parts of graphite, 7 parts of steel fibers, 3 parts of aluminum silicate fibers, 12 parts of fillers, 7 parts of floating beads, 7 parts of potassium hexatitanate whiskers, 7 parts of calcium sulfate whiskers, 12 parts of glass fibers, 3 parts of organic silicon modified epoxy resin, 5 parts of magnesium stearate, 8 parts of nano aluminum oxide, 12 parts of polyamide fibers and 12 parts of wear-resistant carbon black;
the length of the ultra-short glass fiber is 0.15-0.5 mm, the length of the glass fiber is 6-10 mm, and the length of the non-woven fabric product recycled modified short fiber is 6-10 mm. The preparation method comprises the following steps:
s1: putting the non-woven fabric product recycled modified short fibers, the carbon fibers, the phenolic resin, the fluororubber, the graphite, the steel fibers, the aluminum silicate fibers and the filler into a mixer, and uniformly mixing at the mixing speed of 350r/min for 25min to obtain a first raw material;
s2: putting floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, organic silicon modified epoxy resin, magnesium stearate, nano alumina, polyamide fibers and wear-resistant carbon black into a mixer for mixing to obtain a second raw material, and uniformly mixing the second raw material with the first raw material to obtain a third raw material, wherein the mixing speed is 350r/min, and the mixing time is 45 min;
s3: adding the third raw material into a mold, putting the third raw material into a forming mold for press forming, then putting the third raw material and a steel backing into a flat vulcanizing machine after compounding, and keeping the third raw material and the steel backing for 30 minutes under the conditions of high temperature of 350 ℃ and pressure of 25MPa to obtain a blank;
s4: and (3) polishing, carrying out heat treatment and spraying on the blank to obtain the high-friction-performance environment-friendly brake pad, wherein during heat treatment, the polished blank is placed into a heat treatment box, the temperature in the heat treatment box is 130 ℃, and the heat treatment time is 6 hours.
EXAMPLE III
The invention provides a high-friction-performance environment-friendly brake pad which comprises the following raw materials in parts by weight: 40 parts of non-woven fabric product recycled modified short fibers, 15 parts of carbon fibers, 30 parts of phenolic resin, 10 parts of fluororubber, 15 parts of graphite, 10 parts of steel fibers, 5 parts of aluminum silicate fibers, 15 parts of fillers, 10 parts of floating beads, 10 parts of potassium hexatitanate whiskers, 10 parts of calcium sulfate whiskers, 15 parts of glass fibers, 5 parts of organic silicon modified epoxy resin, 7 parts of magnesium stearate, 12 parts of nano aluminum oxide, 15 parts of polyamide fibers and 15 parts of wear-resistant carbon black;
the length of the ultra-short glass fiber is 0.15-0.5 mm, the length of the glass fiber is 6-10 mm, and the length of the non-woven fabric product recycled modified short fiber is 6-10 mm. The preparation method comprises the following steps:
s1: putting the non-woven fabric product recycled modified short fibers, the carbon fibers, the phenolic resin, the fluororubber, the graphite, the steel fibers, the aluminum silicate fibers and the filler into a mixer, and uniformly mixing at the mixing speed of 400r/min for 30min to obtain a first raw material;
s2: putting floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, organic silicon modified epoxy resin, magnesium stearate, nano alumina, polyamide fibers and wear-resistant carbon black into a mixer for mixing to obtain a second raw material, and uniformly mixing the second raw material with the first raw material to obtain a third raw material, wherein the mixing speed is 400r/min, and the mixing time is 50 min;
s3: adding the third raw material into a mold, putting the third raw material into a forming mold for press forming, then putting the third raw material and a steel backing into a flat vulcanizing machine after compounding, and keeping the third raw material and the steel backing for 30 minutes under the conditions of high temperature of 350 ℃ and pressure of 25MPa to obtain a blank;
s4: and (3) polishing, carrying out heat treatment and spraying on the blank to obtain the high-friction-performance environment-friendly brake pad, wherein during heat treatment, the polished blank is placed into a heat treatment box, the temperature in the heat treatment box is 150 ℃, and the heat treatment time is 7 hours.
The preparation method of the non-woven fabric product recyclate modified short fiber comprises the following steps: A. rinsing and drying the recovered non-woven fabric product; B. feeding the dried non-woven fabric product recovered material into a pulverizer to cut into 30 or 40 or 50-mesh crushed material, C, feeding 20 or 25 or 30 parts of ultra-short glass fiber with the length of 0.15-0.5 (preferably short) millimeter, 0.5-1 part of maleic anhydride grafted polypropylene, 0.5 or 0.7 part of polymethylphenylsiloxane and 0.2-0.5 part of antioxidant BHT into a high-speed dispersion machine to be mixed, immediately feeding the mixture into a screw extruder to be melted after mixing, and spinning and quenching the extruded melt material by a spinning box to prepare modified long fiber with the diameter of 0.5-1.0 mm; D. and cutting the modified long fibers to prepare short fibers, thereby obtaining the non-woven fabric product recycled modified short fibers.
Comparative example: 10 parts of acrylic pulp, 13.5 parts of mullite ceramic fiber, 3.5 parts of brucite fiber, 5 parts of nano tin powder, 11 parts of zinc sulfide, 5.25 parts of brown corundum, 6.5 parts of antimony sulfide, 8.5 parts of cellulose fiber, 4.6 parts of iron black, 6 parts of calcium carbonate whisker, 9.5 parts of calcium sulfate whisker, 13.3 parts of potassium titanate, 6.5 parts of flake graphite, 7 parts of calcined petroleum coke, 4 parts of flake aluminum powder, 4 parts of nitrile rubber powder, 9 parts of phenolic resin, 1.1 parts of nano manganese hydroxide and 9 parts of molybdenum disulfide are poured into a high-speed disperser according to the weight ratio, stirred into uniformly dispersed powder, then the friction material composition is taken out and put into a forming die for press forming, then the friction material composition is compounded with a steel back and put into a flat vulcanizing machine for 30 minutes under the conditions of high temperature of 350 ℃ and 25MPa of pressure, then the brake pad is taken out, and burrs are removed to obtain a finished product.
In order to verify the effect of the invention, according to the national standard of China GB5763-1998, the brake pads prepared in the examples 1-3 and the comparative example are respectively subjected to an inertia stand test, and the results are shown in the following table:
from the above table, the high friction environment-friendly brake pad provided by the invention has significantly improved friction performance and thermal stability in high temperature region, and the implementation two is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The environment-friendly brake pad with high friction performance is characterized by comprising the following raw materials in parts by weight: 30-40 parts of non-woven fabric product recycled modified short fiber, 10-15 parts of carbon fiber, 20-30 parts of phenolic resin, 5-10 parts of fluororubber, 10-15 parts of graphite, 5-10 parts of steel fiber, 1-5 parts of aluminum silicate fiber, 10-15 parts of filler, 5-10 parts of floating bead, 5-10 parts of potassium hexatitanate whisker, 5-10 parts of calcium sulfate whisker, 10-15 parts of glass fiber, 1-5 parts of organic silicon modified epoxy resin, 2-7 parts of magnesium stearate, 6-12 parts of nano aluminum oxide, 7-15 parts of polyamide fiber and 10-15 parts of wear-resistant carbon black;
the preparation method of the non-woven fabric product recyclate modified short fiber comprises the following steps: A. rinsing and drying the recovered non-woven fabric product; B. feeding the dried non-woven fabric product recovered material into a crusher to cut into 30-50 meshes of crushed material, C, feeding 20-30 parts of ultra-short glass fiber with the length of 0.15-0.5 mm, 0.5-1 part of maleic anhydride grafted polypropylene, 0.5-1 part of polymethylphenyl siloxane and 0.2-0.5 part of antioxidant into a high-speed dispersion machine to be mixed, immediately feeding the mixture into a screw extruder to be melted after mixing, and spinning and quenching the extruded melt through a spinning box to prepare modified long fiber with the diameter of 0.5-1.0 mm; D. and cutting the modified long fibers to prepare short fibers, thereby obtaining the non-woven fabric product recycled modified short fibers.
2. The environment-friendly brake pad with high friction performance as claimed in claim 1, wherein the length of the ultra-short glass fiber is 0.15-0.5 mm.
3. The environment-friendly brake pad with high friction performance as claimed in claim 1, wherein the glass fiber has a length of 6-10 mm.
4. The environment-friendly brake pad with high friction performance as claimed in claim 1, wherein the length of the non-woven fabric product recyclate modified short fiber is 6-10 mm.
5. The environment-friendly brake pad with high friction performance as claimed in claim 1, is characterized by comprising the following raw materials in parts by weight: 35 parts of non-woven fabric product recycled modified short fibers, 12 parts of carbon fibers, 25 parts of phenolic resin, 7 parts of fluororubber, 12 parts of graphite, 7 parts of steel fibers, 3 parts of aluminum silicate fibers, 12 parts of fillers, 7 parts of floating beads, 7 parts of potassium hexatitanate whiskers, 7 parts of calcium sulfate whiskers, 12 parts of glass fibers, 3 parts of organic silicon modified epoxy resin, 4 parts of magnesium stearate, 9 parts of nano aluminum oxide, 10 parts of polyamide fibers and 12 parts of wear-resistant carbon black.
6. The environment-friendly brake pad with high friction performance as claimed in claim 1, wherein the preparation method comprises the following steps:
s1: putting the non-woven fabric product recycled modified short fibers, the carbon fibers, the phenolic resin, the fluororubber, the graphite, the steel fibers, the aluminum silicate fibers and the filler into a mixer, and uniformly mixing to obtain a first raw material;
s2: putting floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, organic silicon modified epoxy resin, magnesium stearate, nano alumina, polyamide fibers and wear-resistant carbon black into a mixer for mixing to obtain a second raw material, and uniformly mixing the second raw material with the first raw material to obtain a third raw material;
s3: adding the third raw material into a mold, putting the third raw material into a forming mold for press forming, then putting the third raw material and a steel backing into a flat vulcanizing machine after compounding, and keeping the third raw material and the steel backing for 30 minutes under the conditions of high temperature of 350 ℃ and pressure of 25MPa to obtain a blank;
s4: and polishing, heat treating and spraying the blank to obtain the environment-friendly brake pad with high friction performance.
7. The brake pad of claim 4, wherein in S1, the recycled modified short fiber of the non-woven fabric product, the carbon fiber, the phenolic resin, the fluororubber, the graphite, the steel fiber, the aluminum silicate fiber and the filler are mixed uniformly in a mixer at a mixing speed of 300-400r/min for 20-30 min.
8. The environment-friendly brake pad with high friction performance as recited in claim 4, wherein in S2, the floating beads, potassium hexatitanate whiskers, calcium sulfate whiskers, glass fibers, silicone modified epoxy resin, magnesium stearate, nano alumina, polyamide fibers, and wear-resistant carbon black are put into a mixer to be mixed to obtain the second raw material, the second raw material is uniformly mixed with the first raw material to obtain the third raw material, the mixing speed is 300-400r/min, and the mixing time is 40-50 min.
9. The brake pad of claim 4, wherein in step S4, the polished blank is placed in a heat treatment chamber, the temperature in the treatment chamber is 120-150 ℃, and the heat treatment time is 5-7 h.
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