CN112324826A - Comfortable high-temperature-resistant brake pad - Google Patents
Comfortable high-temperature-resistant brake pad Download PDFInfo
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- CN112324826A CN112324826A CN202011200123.1A CN202011200123A CN112324826A CN 112324826 A CN112324826 A CN 112324826A CN 202011200123 A CN202011200123 A CN 202011200123A CN 112324826 A CN112324826 A CN 112324826A
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- 239000000835 fiber Substances 0.000 claims abstract description 76
- 239000002994 raw material Substances 0.000 claims abstract description 57
- 238000009413 insulation Methods 0.000 claims abstract description 32
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 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
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 18
- 239000005011 phenolic resin Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 229910052582 BN Inorganic materials 0.000 claims abstract description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 10
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 10
- 239000002557 mineral fiber Substances 0.000 claims abstract description 10
- 239000004952 Polyamide Substances 0.000 claims abstract description 9
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 9
- 229910021383 artificial graphite Inorganic materials 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims abstract description 9
- 229920002647 polyamide Polymers 0.000 claims abstract description 9
- 239000010453 quartz Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 12
- 238000009987 spinning Methods 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 5
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 7
- 239000002783 friction material Substances 0.000 description 4
- 238000007590 electrostatic spraying Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- -1 polymethylphenylsiloxane Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000459 Nitrile rubber Polymers 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
- 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
- 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
- 230000030279 gene silencing Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 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
- 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
- 238000012958 reprocessing Methods 0.000 description 1
- 230000001743 silencing effect 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
-
- 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
- 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
- C04B26/12—Condensation polymers of aldehydes or ketones
- C04B26/122—Phenol-formaldehyde condensation polymers
-
- 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
- F16D2200/0039—Ceramics
-
- 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
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0065—Inorganic, e.g. non-asbestos mineral fibres
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to the technical field of brake pads, in particular to a comfortable high-temperature-resistant brake pad, which aims at solving the problems that the conventional brake pad has low friction force and low heat insulation and heat resistance and can not meet the use requirement, and provides the following scheme, which comprises the following important components: friction layer raw materials, heat dissipation layer raw materials, amortization piece, flexure strip and backplate, the friction layer raw materials include: 2-5 parts of boron fiber, 2-4 parts of carbon-silicon fiber, 2-4 parts of ceramic fiber, 2-4 parts of mineral fiber, 2-6 parts of phenolic resin, 1-4 parts of coupling agent, 2-6 parts of red copper powder and 2-7 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 2-4 parts of carbon silicon fiber, 1-4 parts of quartz, 3-5 parts of silicon nitride crystal, 2-6 parts of artificial graphite and 2-5 parts of polyamide. The invention has convenient operation, can improve the friction force and the heat insulation and heat resistance of the brake pad, and can meet the use requirement.
Description
Technical Field
The invention relates to the technical field of brake pads, in particular to a comfortable high-temperature-resistant brake pad.
Background
The brake pad is the most critical safety part in the brake system of the automobile. The working principle of the brake mainly comes from friction, and the kinetic energy of the vehicle is converted into the heat energy after friction by using the friction between the brake block and the brake disc (drum) and the friction between the tire and the ground, so that the vehicle stops, and the quality of the braking effect is the decisive role of the brake block, so the good brake block is the protection spirit of people and vehicles.
The friction force of the existing brake pad in a high-temperature area is greatly reduced, the heat insulation and resistance performance is reduced, and the requirement of safe use cannot be met.
Disclosure of Invention
The invention aims to solve the defects that the conventional brake pad has low friction force and low heat insulation and heat resistance and cannot meet the use requirement, and provides a comfortable high-temperature-resistant brake pad.
In order to achieve the purpose, the invention adopts the following technical scheme: comfortable high temperature resistant brake block of type, including frictional layer raw materials, insulating layer raw materials and backplate, its characterized in that, the frictional layer raw materials include: 3-4 parts of non-woven fabric product recycled modified short fiber, 2.2-4 parts of boron fiber, 2-4 parts of carbon-silicon fiber, 2-4 parts of ceramic fiber, 2-4 parts of mineral fiber, 4-6 parts of phenolic resin, 1-3 parts of coupling agent, 2-3.5 parts of red copper powder and 2-3.5 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 2-4 parts of carbon silicon fiber, 1-2 parts of quartz, 3-5 parts of silicon nitride crystal, 2-3 parts of phenolic resin, 2-4 parts of artificial graphite and 2-4 parts of polyamide.
Preferably, the friction layer raw material comprises: 3.5 parts of non-woven fabric product recycled modified short fiber, 2.8 parts of boron fiber, 2.6 parts of carbon-silicon fiber, 3.2 parts of ceramic fiber, 2.8 parts of mineral fiber, 5 parts of phenolic resin, 2 parts of coupling agent, 2.5 parts of red copper powder and 2.6 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 3 parts of carbon silicon fiber, 1.5 parts of quartz, 3.2 parts of silicon nitride crystal, 2 parts of phenolic resin, 2.5 parts of artificial graphite and 2.2 parts of polyamide.
Preferably, the comfortable high-temperature-resistant brake pad is characterized by comprising the following preparation method:
s1: firstly, mixing and laminating raw materials of a friction layer to obtain a friction layer blank;
s2: processing and pressing the raw materials of the heat insulation layer to obtain a blank of the heat insulation layer;
s3: carrying out surface treatment on the friction layer and the heat insulation layer;
s4: sequentially stacking the friction layer, the heat insulation layer and the back plate, and carrying out hot-press vulcanization molding on the friction layer raw material by using a hot-press molding mode to prepare a brake pad; and spraying, drying and packaging the brake pad to obtain the product.
The aim of an environment-friendly manufacturer is that the non-woven fabric product garbage is recycled and modified to be used as a friction material. The preparation method of the non-woven fabric product recycled material 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.
Compared with the prior art, the invention has the advantages that the operation is convenient, the friction force and the heat insulation and resistance performance of the brake pad can be improved, and the use requirement in severe environment can be met.
(1) The main friction material is made of a non-woven fabric recycled product through reprocessing, so that the production cost of the product is reduced and the product performance is improved while plastic and medical wastes are reduced.
(2) The boron fiber, the carbon-silicon fiber, the ceramic fiber, the mineral fiber, the phenolic resin, the coupling agent, the red copper powder and the boron nitride powder all have a friction function, and the friction force can be improved by mixing a plurality of the boron fibers, the carbon-silicon fiber, the ceramic fiber, the mineral fiber, the phenolic resin, the coupling agent, the red copper powder and the boron nitride powder.
(3) The carbon silicon fiber, the quartz, the silicon nitride crystal, the artificial graphite and the polyamide have high temperature resistance and can play a role in high temperature resistance and heat insulation; the arranged silencing sheet and the elastic sheet can reduce friction and silencing effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1:
comfortable high temperature resistant brake block of type, including frictional layer raw materials, insulating layer raw materials and backplate, wherein, the frictional layer raw materials include: 3 parts of non-woven fabric product recycled modified short fibers, 4 parts of boron fibers, 2 parts of carbon-silicon fibers, 4 parts of ceramic fibers, 4 parts of mineral fibers, 6 parts of phenolic resin, 1.5 parts of coupling agent, 2 parts of red copper powder and 3.5 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 4 parts of carbon silicon fiber, 1 part of quartz, 5 parts of silicon nitride crystal, 3 parts of phenolic resin, 2 parts of artificial graphite and 2 parts of polyamide.
In this embodiment, 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 particles; C. feeding 20, 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 for mixing, immediately feeding into a screw extruder for melting after mixing, and spinning and quenching 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. The length of the ultra-short glass fiber is 0.15-0.5 mm, and the length of the non-woven fabric product recycled modified short fiber is 6-10 mm.
In the embodiment, the preparation method comprises the following steps:
s1: firstly, mixing and laminating raw materials of a friction layer to obtain a friction layer blank;
s2: processing and pressing the raw materials of the heat insulation layer to obtain a blank of the heat insulation layer;
s3: carrying out surface treatment on the friction layer and the heat insulation layer;
s4: sequentially stacking the friction layer, the heat insulation layer and the back plate, and carrying out hot-press vulcanization molding on the friction layer raw material in a hot-press molding manner to prepare a brake pad; and spraying, drying and packaging the brake pad to obtain the product.
In this embodiment, in S1, the friction layer raw material is mixed and heated at 50-70 ℃ for 30-50min, and the friction layer raw material is hot-pressed into a blank by cold press molding.
In this embodiment, in S2, the raw materials of the thermal insulation layer are mixed and heated, the raw materials of the thermal insulation layer are hot-pressed and molded by a hot-press molding method, the mixing temperature is 60-70 ℃, the mixing time is 30-50min, and the raw materials of the friction layer are hot-pressed into a blank by a cold-press molding method.
In this embodiment, the blank is placed into a flat vulcanizing machine and kept for 30 minutes at a high temperature of 350 ℃ and a pressure of 25MPa, and then spraying, drying and packaging are carried out after removing burrs, and the electrostatic spraying process is adopted, wherein the rotating speed of the spraying equipment is 1000rpm and the temperature is 200 ℃ and the blank is dried by a dryer.
Example 2:
comfortable high temperature resistant brake block of type, including frictional layer raw materials, insulating layer raw materials and backplate, wherein the frictional layer raw materials includes: 3.5 parts of non-woven fabric product recycled modified short fiber, 2.8 parts of boron fiber, 2.6 parts of carbon-silicon fiber, 3.2 parts of ceramic fiber, 2.8 parts of mineral fiber, 5 parts of phenolic resin, 2 parts of coupling agent, 2.5 parts of red copper powder and 2.6 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 3 parts of carbon silicon fiber, 1.5 parts of quartz, 3.2 parts of silicon nitride crystal, 2 parts of phenolic resin, 2.5 parts of artificial graphite and 2.2 parts of polyamide.
In this embodiment, 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 particles; C. feeding 20, 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 for mixing, immediately feeding into a screw extruder for melting after mixing, and spinning and quenching 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. The length of the ultra-short glass fiber is 0.15-0.5 mm, and the length of the non-woven fabric product recycled modified short fiber is 6-10 mm.
In the embodiment, the preparation method comprises the following steps:
s1: firstly, mixing and laminating raw materials of a friction layer to obtain a friction layer blank;
s2: processing and pressing the raw materials of the heat insulation layer to obtain a blank of the heat insulation layer;
s3: carrying out surface treatment on the friction layer and the heat insulation layer;
s4: sequentially stacking the friction layer, the heat insulation layer and the back plate, and carrying out hot-press vulcanization molding on the friction layer raw material in a hot-press molding manner to prepare a brake pad; and spraying, drying and packaging the brake pad to obtain the product.
In this embodiment, in S1, the friction layer raw material is mixed and heated at 50-70 ℃ for 30-50min, and the friction layer raw material is hot-pressed into a blank by cold press molding.
In this embodiment, in S2, the raw materials of the thermal insulation layer are mixed and heated, the raw materials of the thermal insulation layer are hot-pressed and molded by a hot-press molding method, the mixing temperature is 60-70 ℃, the mixing time is 30-50min, and the raw materials of the friction layer are hot-pressed into a blank by a cold-press molding method.
In this embodiment, the blank is placed into a flat vulcanizing machine and kept for 30 minutes at a high temperature of 350 ℃ and a pressure of 25MPa, and then spraying, drying and packaging are carried out after removing burrs, and the electrostatic spraying process is adopted, wherein the rotating speed of the spraying equipment is 1000rpm and the temperature is 200 ℃ and the blank is dried by a dryer.
Example 3:
comfortable high temperature resistant brake block of type, including frictional layer raw materials, insulating layer raw materials and backplate, wherein the frictional layer raw materials includes: 4 parts of non-woven fabric product recycled modified short fiber, 2.2 parts of boron fiber, 2 parts of carbon-silicon fiber, 2 parts of ceramic fiber, 2 parts of mineral fiber, 4 parts of phenolic resin, 1 part of coupling agent, 2 parts of red copper powder and 3.5 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 2 parts of carbon silicon fiber, 1 part of quartz, 3 parts of silicon nitride crystal, 3 parts of phenolic resin, 4 parts of artificial graphite and 2 parts of polyamide.
In this embodiment, 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 particles; C. feeding 20, 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 for mixing, immediately feeding into a screw extruder for melting after mixing, and spinning and quenching 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. The length of the ultra-short glass fiber is 0.15-0.5 mm, and the length of the non-woven fabric product recycled modified short fiber is 6-10 mm.
In the embodiment, the preparation method comprises the following steps:
s1: firstly, mixing and laminating raw materials of a friction layer to obtain a friction layer blank;
s2: processing and pressing the raw materials of the heat insulation layer to obtain a blank of the heat insulation layer;
s3: carrying out surface treatment on the friction layer and the heat insulation layer;
s4: sequentially stacking the friction layer, the heat insulation layer and the back plate, and carrying out hot-press vulcanization molding on the friction layer raw material in a hot-press molding manner to prepare a brake pad; and spraying, drying and packaging the brake pad to obtain the product.
In this embodiment, in S1, the friction layer raw material is mixed and heated at 50-70 ℃ for 30-50min, and the friction layer raw material is hot-pressed into a blank by cold press molding.
In this embodiment, in S2, the raw materials of the thermal insulation layer are mixed and heated, the raw materials of the thermal insulation layer are hot-pressed and molded by a hot-press molding method, the mixing temperature is 60-70 ℃, the mixing time is 30-50min, and the raw materials of the friction layer are hot-pressed into a blank by a cold-press molding method.
In this embodiment, the blank is placed into a flat vulcanizing machine and kept for 30 minutes at a high temperature of 350 ℃ and a pressure of 25MPa, and then spraying, drying and packaging are carried out after removing burrs, and the electrostatic spraying process is adopted, wherein the rotating speed of the spraying equipment is 1000rpm and the temperature is 200 ℃ and the blank is dried by a dryer.
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 backing, the steel backing is put into a flat vulcanizing machine, and kept for 30 minutes under the conditions of high temperature of 350 ℃ and 25MPa, then the brake pad is taken out, and burrs are removed to obtain a finished.
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 (5)
1. Comfortable high temperature resistant brake block of type, including frictional layer raw materials, insulating layer raw materials and backplate, its characterized in that, the frictional layer raw materials include: 3-4 parts of non-woven fabric product recycled modified short fiber, 2.2-4 parts of boron fiber, 2-4 parts of carbon-silicon fiber, 2-4 parts of ceramic fiber, 2-4 parts of mineral fiber, 4-6 parts of phenolic resin, 1-3 parts of coupling agent, 2-3.5 parts of red copper powder and 2-3.5 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 2-4 parts of carbon silicon fiber, 1-2 parts of quartz, 3-5 parts of silicon nitride crystal, 2-3 parts of phenolic resin, 2-4 parts of artificial graphite and 2-4 parts of polyamide.
2. The comfortable high-temperature-resistant brake pad as claimed in claim 1, wherein the friction layer comprises: 3.5 parts of non-woven fabric product recycled modified short fiber, 2.8 parts of boron fiber, 2.6 parts of carbon-silicon fiber, 3.2 parts of ceramic fiber, 2.8 parts of mineral fiber, 5 parts of phenolic resin, 2 parts of coupling agent, 2.5 parts of red copper powder and 2.6 parts of boron nitride powder; the heat insulating layer comprises the following raw materials: 3 parts of carbon silicon fiber, 1.5 parts of quartz, 3.2 parts of silicon nitride crystal, 2 parts of phenolic resin, 2.5 parts of artificial graphite and 2.2 parts of polyamide.
3. The comfortable high-temperature-resistant brake pad as claimed in claim 1, wherein the non-woven fabric product recyclate modified short fiber is prepared by 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.
4. The comfortable high-temperature-resistant brake pad as claimed in claim 1, which is prepared by the following steps:
s1: firstly, mixing and laminating raw materials of a friction layer to obtain a friction layer blank;
s2: processing and pressing the raw materials of the heat insulation layer to obtain a blank of the heat insulation layer;
s3: carrying out surface treatment on the friction layer and the heat insulation layer;
s4: and the friction layer, the heat insulation layer and the back plate are sequentially stacked, and the friction layer raw material is subjected to hot-press vulcanization molding by utilizing a hot-press molding mode to prepare the brake pad.
5. The comfortable high-temperature-resistant brake pad as claimed in claim 3, wherein the brake pad is sprayed, dried and packaged to obtain the product.
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| CN202011200123.1A CN112324826A (en) | 2020-11-02 | 2020-11-02 | Comfortable high-temperature-resistant brake pad |
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| CN202011200123.1A CN112324826A (en) | 2020-11-02 | 2020-11-02 | Comfortable high-temperature-resistant brake pad |
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| CN202011200123.1A Pending CN112324826A (en) | 2020-11-02 | 2020-11-02 | Comfortable high-temperature-resistant brake pad |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113698728A (en) * | 2021-09-03 | 2021-11-26 | 武汉纽联精工科技有限公司 | Shock-absorbing silencing sheet for automobile brake pad and preparation method thereof |
| CN114407261A (en) * | 2021-12-29 | 2022-04-29 | 华泰汽车配件工业（南平）有限公司 | Brake pad preforming process |
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| CN114407261A (en) * | 2021-12-29 | 2022-04-29 | 华泰汽车配件工业（南平）有限公司 | Brake pad preforming process |
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