CN111577802A - Production method of enhanced friction lining and novel brake pad - Google Patents
Production method of enhanced friction lining and novel brake pad Download PDFInfo
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- CN111577802A CN111577802A CN202010293160.5A CN202010293160A CN111577802A CN 111577802 A CN111577802 A CN 111577802A CN 202010293160 A CN202010293160 A CN 202010293160A CN 111577802 A CN111577802 A CN 111577802A
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- 239000000835 fiber Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 30
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- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000007731 hot pressing Methods 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 6
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000004327 boric acid Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
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- 238000007711 solidification Methods 0.000 claims description 4
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- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 229940087373 calcium oxide Drugs 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000003623 enhancer Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
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- 238000000465 moulding Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 229910052845 zircon Inorganic materials 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 3
- -1 boric acid modified phenolic resin Chemical class 0.000 claims description 2
- 239000004760 aramid Substances 0.000 claims 1
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- 229910052799 carbon Inorganic materials 0.000 description 4
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 229920002239 polyacrylonitrile Polymers 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
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- 238000002360 preparation method Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- OBOXTJCIIVUZEN-UHFFFAOYSA-N [C].[O] Chemical class [C].[O] OBOXTJCIIVUZEN-UHFFFAOYSA-N 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
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—Composition of linings ; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- 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
- F16D69/025—Compositions based on an organic binder
-
- 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
- F16D2069/002—Combination of different friction materials
-
- 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
- F16D69/04—Attachment of linings
- F16D2069/0425—Attachment methods or devices
- F16D2069/045—Bonding
- F16D2069/0466—Bonding chemical, e.g. using adhesives, vulcanising
- F16D2069/0475—Bonding chemical, e.g. using adhesives, vulcanising comprising thermal treatment
-
- 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
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0023—Shaping by pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to the technical field of brake pads, and particularly relates to an enhanced friction lining and a production method of a novel brake pad. The fiber reinforced plastic composite material is formed by hot-pressing 10-30 parts by weight of fiber reinforced materials, 10-20 parts by weight of adhesives, 10-20 parts by weight of lubricants, 30-45 parts by weight of fillers, 3-8 parts by weight of grinding additives and other auxiliary materials; the fiber reinforced material also at least comprises one of ceramic fiber, calcium sulfate whisker fiber, basalt fiber, aramid fiber and red copper fiber, and the content of the carbon fiber pre-oxidized fiber in the fiber reinforced material is not lower than 1/3. The reinforced friction lining has the characteristics of good braking performance, strong thermal stability, low wear rate, high shear strength and prolonged service life, and the method for producing the brake pad by using the friction lining adopts a hot-pressing one-step forming process, thereby having the advantages of simple operation, low production cost and outstanding economic benefit.
Description
Technical Field
The invention belongs to the technical field of brake pads, and particularly relates to an enhanced friction lining and a production method of a novel brake pad.
Background
The brake pad is an important part of the vehicle, and can effectively decelerate and brake the vehicle. The brake pad generally includes a steel backing and a lining fixed thereto, and the lining is made of a friction material to bear a pressure of the steel backing to generate a friction action, so that the quality of the friction lining is related to personal safety. The general friction lining is formed by pressing an adhesive, a reinforcing material and friction filler, the friction lining and a brake disc or a brake drum rub against each other to convert the kinetic energy of a vehicle into heat energy, and in the process, the temperature of the brake disc and the temperature of the friction lining rise instantly, so that the friction lining is seriously abraded by strong impact pressure and friction heat. In addition, the friction coefficient of the friction lining is in direct proportion to the braking capacity of the friction lining, the safety of braking can be ensured only by the friction coefficient which is high enough, and the friction lining in the prior art is easy to age, poor in friction resistance, short in service life, small in strength of the lining, and cracked and fallen off in use.
In the invention patent application with the patent number of CN108623988A, graphene and phenolic resin are melted and mixed, filler is added uniformly, then the mixture is mixed on an open plasticator, the mixture is crushed and molded by compression after being mixed, and the friction lining made of the modified graphene oxide composite material improves the friction performance and the thermal stability to a certain extent.
Disclosure of Invention
The invention aims to provide an enhanced friction lining which has good braking performance, strong thermal stability, low wear rate, high shear strength and long service life and a method for producing a brake pad by using the enhanced friction lining.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a reinforced friction lining is hot-pressed and formed by 10 to 30 weight portions of fiber reinforced material, 10 to 20 weight portions of adhesive, 10 to 20 weight portions of lubricant, 30 to 45 weight portions of filler, 3 to 8 weight portions of grinding agent and other auxiliary materials; characterized in that the fibrous reinforcement comprises carbon fiber pre-oxidized filaments.
Additional features forming an enhanced friction lining of the type described above further include:
the fiber reinforced material at least comprises one of ceramic fiber, calcium sulfate whisker fiber, basalt fiber, aramid fiber and red copper fiber, and the content of the carbon fiber pre-oxidized fiber in the fiber reinforced material is not lower than 1/3;
-the binder comprises a resin or a nitrile rubber; the lubricant comprises graphite powder or mica powder; the filler comprises one or more of barite powder, precipitated barium sulfate, heavy calcium and calcium hydroxide, and the grinding enhancer comprises one or more of chromite, zircon powder and alumina;
-the resin constituting the binder is a boric acid-modified phenolic resin.
The invention also provides a production method of the novel brake pad, which is characterized by comprising the enhanced friction lining, and the preparation process comprises the following steps:
a, cutting a steel backing, and coating an adhesive on the surface of the steel backing adhered to the friction lining;
b, preparing materials required by the friction lining, and performing crushing, drying and mixing pretreatment;
c, filling the material prepared in the step B and the steel backing in the step A into a die cavity of a pressing die for hot-pressing solidification forming; wherein the mould is formed by heating a mould core and pressing at one time, the hot pressing temperature is 145-155 ℃, the time is 3-5 minutes, and the hot pressing pressure is 20-25 Mpa;
d, carrying out heat treatment on the brake pad subjected to the hot-press curing molding in the step C, linearly raising the temperature to 185 ℃, and maintaining the temperature for 6-10 hours.
Compared with the prior art, the enhanced friction lining provided by the invention has the following advantages: firstly, because the fiber reinforced material in the novel friction lining comprises carbon fiber pre-oxidized fibers which are prepared by arranging Polyacrylonitrile (PAN) protofilament in an oxidation furnace, the novel friction lining has good thermal stability and chemical resistance, and the friction material serving as the reinforced fiber is not easy to break and is wear-resistant and has stable friction performance at high temperature; secondly, the fiber reinforced material at least comprises one of ceramic fiber, calcium sulfate whisker fiber, basalt fiber and aramid fiber, the content of carbon fiber pre-oxidized fiber in the fiber reinforced material is not lower than 1/3, a friction lining made of the mixed fiber is high-temperature and high-pressure resistant, the surface void ratio is higher, and in addition, the aramid fiber and other fibers are mixed, so that the reinforced fiber has the characteristics of ultrahigh strength and light weight, micropores are formed on the surface and inside of the lining material very favorably, the surface of the lining is pressed to facilitate the escape of air, and the noise generated during braking is avoided; thirdly, the carbon fiber pre-oxidized fibers enhance the heat insulation performance of the friction lining, improve the bonding strength with other filler components, enable the shearing resistance of the brake pad to be stronger, resist abrasion, keep constant friction coefficient at high temperature and high pressure, and prolong the service life of the brake pad; fourthly, because the brake pad is manufactured by the reinforced friction lining, the hot pressing process of the friction lining is simple, the batching and processing pretreatment are easy to operate, the material cost and the production cost are low, the economic benefit of the brake pad is improved, and the profile is shaped before the heat treatment, so that the appearance can not be changed when the brake pad is heated in an oven, naturally formed micropores can be reserved on the surface and inside of the lining material after air escapes, and the micropores are not influenced by external force, so that the surface porosity of the lining material is further improved, higher friction coefficient and structural strength are maintained, and the wear resistance is more excellent.
Drawings
FIG. 1 is a graph showing the test data of a constant speed test of a conventional friction lining according to an embodiment of the present invention;
FIG. 2-1 shows the results of a comparative test at elevated temperature;
FIG. 2-2 is a comparative test result under cooling conditions;
FIGS. 2-3 are comparative test results of volumetric wear;
FIGS. 2-4 are comparative test results of weight abrasion;
FIGS. 2-5 are results of density comparison tests;
FIGS. 2-6 are hardness comparison test results;
FIGS. 2-7 show the results of the shear strength comparison tests.
Detailed Description
An enhanced friction lining according to the present invention will be described in further detail with reference to the accompanying drawings.
The reinforced friction lining is hot-pressed and formed by 10 to 30 weight parts of fiber reinforced material, 10 to 20 weight parts of adhesive, 10 to 20 weight parts of lubricant, 30 to 45 weight parts of filler, 3 to 8 weight parts of grinding agent and other auxiliary materials; wherein the fibrous reinforcement comprises carbon fiber pre-oxidized filaments.
The fiber reinforced material at least comprises one of ceramic fiber, calcium sulfate whisker fiber, basalt fiber, aramid fiber and red copper fiber, and the content of the carbon fiber pre-oxidized fiber in the fiber reinforced material is not lower than 1/3;
the carbon fiber pre-oxidized fiber is subjected to oxidation modification treatment by Polyacrylonitrile (PAN) protofilament, the crystallinity of cellulose of the carbon fiber pre-oxidized fiber is promoted after the modification, the mechanical property of the reinforced fiber is favorably improved, meanwhile, the adhesion area of the carbon fiber pre-oxidized fiber and the surfaces of other reinforced fibers is increased, the purpose of improving the bonding strength is achieved, and the wear resistance of the friction material is enhanced.
Preferably, the binder comprises a resin or a nitrile rubber; the lubricant comprises graphite powder or mica powder; the filler comprises one or more of barite powder, precipitated barium sulfate, heavy calcium and calcium hydroxide, and the grinding enhancer comprises one or more of chromite, zircon powder and alumina;
furthermore, the resin forming the adhesive is boric acid modified phenolic resin, the phenolic resin is modified by boric acid, in the curing process, phenolic hydroxyl groups of phenol and boric hydroxyl groups of boric acid are subjected to chemical reaction to form a boric acid phenolic ester structure, partial phenolic hydroxyl groups are sealed by the boric acid phenolic ester structure taking boron atoms as a core, so that thermal decomposition reaction based on the phenolic hydroxyl groups is not easy to occur, in addition, boron oxide is formed in the cracking process of the boric acid phenolic ester structure, and the formation of carbon-oxygen compounds is reduced, so that the loss amount of carbon in the phenolic resin is reduced, and the heat resistance of the friction material is improved.
The technical solution of the present invention is further described with reference to the following embodiments,
in a first embodiment, the hot press molding material for an enhanced friction lining comprises:
2 parts by weight of red copper fiber (specification CUF-25);
15 parts by weight of carbon fiber pre-oxidized fiber (specification A2211);
15 parts of crystalline flake graphite (containing 90% of carbon) (specification 190);
2 parts by weight of coke (specification 40-60 meshes);
1 part by weight of friction powder (specification 1820A);
6 parts of butyronitrile rubber powder (specification 40 meshes Shengdong);
5 parts of calcium sulfate whisker (Henan);
12 parts by weight of a resin (Specification SG-3130);
5 parts by weight of iron oxide yellow (specification N210);
5 parts by weight of calcined alumina (specification 800 mesh);
2 parts of heavy magnesium oxide (Anshan Haicheng);
30 parts of barium sulfate (specification 325-97);
in a second embodiment, the hot press molding material for an enhanced friction lining comprises:
2 parts by weight of red copper fiber (specification CUF-25);
22 parts by weight of carbon fiber pre-oxidized fiber (specification A2211);
15 parts of crystalline flake graphite (containing 90% of carbon) (specification 190);
2 parts by weight of coke (specification 40-60 meshes);
1 part by weight of friction powder (specification 1820A);
6 parts of butyronitrile rubber powder (specification 40 meshes Shengdong);
5 parts of calcium sulfate whisker (Henan);
12 parts by weight of a resin (Specification SG-3130);
5 parts by weight of iron oxide yellow (specification N210);
5 parts by weight of calcined alumina (specification 800 mesh);
2 parts of heavy magnesium oxide (Anshan Haicheng);
27 parts by weight of barium sulfate (specification 325-97);
in a third embodiment, the hot press molding material for an enhanced friction lining comprises:
2 parts by weight of red copper fiber (specification CUF-25);
30 parts by weight of carbon fiber pre-oxidized fiber (specification A2211);
15 parts of crystalline flake graphite (containing 90% of carbon) (specification 190);
2 parts by weight of coke (specification 40-60 meshes);
1 part by weight of friction powder (specification 1820A);
6 parts of butyronitrile rubber powder (specification 40 meshes Shengdong);
5 parts of calcium sulfate whisker (Henan);
12 parts by weight of a resin (Specification SG-3130);
5 parts by weight of iron oxide yellow (specification N210);
5 parts by weight of calcined alumina (specification 800 mesh);
2 parts of heavy magnesium oxide (Anshan Haicheng);
15 parts of barium sulfate (specification 325-97);
the 3 above-mentioned embodiments and ordinary friction facing carry out the constant speed experiment respectively, and the test result is shown in figure 1, through this brake block of material reinforcing with carbon fiber preoxidized filament, with the increase of carbon fiber preoxidized filament use amount with ordinary brake block, have obvious improvement in coefficient of friction (braking performance), obviously reduce in wear rate, life increases, shear strength index also has obvious improvement simultaneously.
The results of the specific parameter tests in the experiments are shown in fig. 2-1, fig. 2-2, fig. 2-3, fig. 2-4, fig. 2-5, fig. 2-6 and fig. 2-7.
The invention also provides a production method of the novel brake pad, which is characterized by comprising the enhanced friction lining, and the preparation process comprises the following steps:
a, cutting a steel backing, and coating an adhesive on the surface of the steel backing adhered to a friction lining;
b, preparing materials required by the friction lining, and performing crushing, drying and mixing pretreatment;
c, filling the material prepared in the step B and the steel backing in the step A into a die cavity of a pressing die for hot-pressing solidification forming; wherein the mould is a mould core which is heated and pressed for one time, the hot pressing temperature is between 145 and 155 ℃, the time is 3 to 5 minutes, and the hot pressing pressure is between 20 and 25 Mpa;
d, carrying out heat treatment on the brake pad subjected to the hot-press curing molding in the step C, linearly raising the temperature to 185 ℃, and maintaining the temperature for 6-10 hours.
The brake pad is generated through hot-pressing solidification, the temperature is uniform and consistent, the density is not more than 1.89G/CM, and the proportion of the brake pad to other brake pads is reduced by about 30% -40%.
Claims (5)
1. A reinforced friction lining is hot-pressed and formed by 10 to 30 weight portions of fiber reinforced material, 10 to 20 weight portions of adhesive, 10 to 20 weight portions of lubricant, 30 to 45 weight portions of filler, 3 to 8 weight portions of grinding agent and other auxiliary materials; characterized in that the fibrous reinforcement comprises carbon fiber pre-oxidized filaments.
2. An enhanced friction lining according to claim 1, wherein said fiber-reinforced material further comprises at least one of ceramic fibers, calcium sulfate whisker fibers, basalt fibers, aramid fibers, and red copper fibers, and a content of said carbon fiber pre-oxidized filaments in said fiber-reinforced material is not less than 1/3.
3. An enhanced friction lining according to claim 1 or 2, wherein said adhesive comprises a resin or nitrile rubber; the lubricant comprises graphite powder or mica powder; the filler comprises one or more of barite powder, precipitated barium sulfate, heavy calcium and calcium hydroxide, and the grinding enhancer comprises one or more of chromite, zircon powder and alumina.
4. An enhanced friction lining according to claim 3 wherein the resin comprising said binder is a boric acid modified phenolic resin.
5. A method for producing a novel brake pad comprising the reinforced friction lining as claimed in claims 1 to 3, which is prepared by the steps of:
a, cutting a steel backing, and coating an adhesive on the surface of the steel backing adhered to the friction lining;
b, preparing materials required by the friction lining, and performing crushing, drying and mixing pretreatment;
c, filling the material prepared in the step B and the steel backing in the step A into a die cavity of a pressing die for hot-pressing solidification forming; wherein the mould is formed by heating a mould core and pressing at one time, the hot pressing temperature is 145-155 ℃, the time is 3-5 minutes, and the hot pressing pressure is 20-25 Mpa;
d, carrying out heat treatment on the brake pad subjected to the hot-press curing molding in the step C, linearly raising the temperature to 185 ℃, and maintaining the temperature for 6-10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010293160.5A CN111577802A (en) | 2020-04-15 | 2020-04-15 | Production method of enhanced friction lining and novel brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN112028543A (en) * | 2020-09-07 | 2020-12-04 | 天宜上佳（天津）新材料有限公司 | Friction material, friction body, brake pad comprising friction body, preparation method and application of brake pad |
| CN112413021A (en) * | 2020-11-12 | 2021-02-26 | 杭州电子科技大学 | Preparation method of friction disc for power-off brake |
| CN112576665A (en) * | 2020-12-29 | 2021-03-30 | 沈阳远程摩擦密封材料有限公司 | Synthetic brake pad for wet weather urban rail |
| CN112576663A (en) * | 2020-12-29 | 2021-03-30 | 沈阳远程摩擦密封材料有限公司 | Composite brake shoe for heavy-duty high-speed truck |
| CN112576662A (en) * | 2020-12-29 | 2021-03-30 | 沈阳远程摩擦密封材料有限公司 | Submarine tunnel brake pad |
| CN112576664A (en) * | 2020-12-29 | 2021-03-30 | 沈阳远程摩擦密封材料有限公司 | Composite brake pad for railway vehicle with speed per hour less than or equal to 160km/h |
| CN112980392A (en) * | 2021-03-03 | 2021-06-18 | 张豪 | Wear-resistant low-noise soft brake pad and preparation method thereof |
| CN115612244A (en) * | 2022-07-14 | 2023-01-17 | 广饶宝泰制动系统有限公司 | Preparation method of novel environment-friendly brake pad made of composite material without steel backing |
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| CN112576664A (en) * | 2020-12-29 | 2021-03-30 | 沈阳远程摩擦密封材料有限公司 | Composite brake pad for railway vehicle with speed per hour less than or equal to 160km/h |
| CN112980392A (en) * | 2021-03-03 | 2021-06-18 | 张豪 | Wear-resistant low-noise soft brake pad and preparation method thereof |
| CN115612244A (en) * | 2022-07-14 | 2023-01-17 | 广饶宝泰制动系统有限公司 | Preparation method of novel environment-friendly brake pad made of composite material without steel backing |
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