CN113512266A - Friction material for motor vehicle - Google Patents
Friction material for motor vehicle Download PDFInfo
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- CN113512266A CN113512266A CN202110474330.4A CN202110474330A CN113512266A CN 113512266 A CN113512266 A CN 113512266A CN 202110474330 A CN202110474330 A CN 202110474330A CN 113512266 A CN113512266 A CN 113512266A
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- parts
- friction material
- whisker
- temperature
- mixture
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- 239000002783 friction material Substances 0.000 title claims abstract description 27
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 17
- 239000010951 brass Substances 0.000 claims abstract description 17
- 239000010459 dolomite Substances 0.000 claims abstract description 17
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000010439 graphite Substances 0.000 claims abstract description 17
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 17
- 239000010456 wollastonite Substances 0.000 claims abstract description 17
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 239000005060 rubber Substances 0.000 claims abstract description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 25
- 239000011591 potassium Substances 0.000 claims description 25
- 229910052700 potassium Inorganic materials 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 24
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 17
- 229920000459 Nitrile rubber Polymers 0.000 claims description 17
- 229920001568 phenolic resin Polymers 0.000 claims description 17
- 239000005011 phenolic resin Substances 0.000 claims description 17
- 239000011265 semifinished product Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 9
- 239000004005 microsphere Substances 0.000 claims description 8
- 239000003981 vehicle Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000007669 thermal treatment Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000004760 aramid Substances 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/149—Antislip compositions
-
- 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
-
- 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
- F16D69/027—Compositions based on metals or inorganic oxides
- F16D69/028—Compositions based on metals or inorganic oxides containing fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- 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
- F16D2200/0026—Non-ferro
-
- 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
- F16D2200/0026—Non-ferro
- F16D2200/003—Light metals, e.g. aluminium
-
- 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
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0056—Elastomers
-
- 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
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to the technical field of automobile parts, in particular to a friction material for a motor vehicle. The friction material is composed of resin, calcium sulfate whiskers, graphite, aluminum fibers, rubber, dolomite, wollastonite, aramid fibers, silicon dioxide, brass and potassium titanate whiskers. The friction material has the advantages of strong quality stability, small friction coefficient change along with the change of temperature, low abrasion degree, good abrasion performance and thermal stability, and can effectively prolong the service life of the brake pad and improve the quality safety of the product when being applied to the preparation of the brake pad of the motor vehicle.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a friction material for a motor vehicle and a preparation method thereof.
Background
An automobile brake pad is a friction material product used for an automobile brake, which generates a braking force by friction with a brake disc or a brake drum, thereby decelerating or stopping an automobile. The performance and the quality of the brake pad are directly related to the life and property safety and the public safety of people. The brake pads are divided into disc brake pads and drum brake pads, which are respectively used for automobile disc brakes and drum brakes. The working principle of the brake pad is to convert the kinetic energy of the vehicle running into the heat energy after friction by using the friction between the brake pad and a brake disc (drum) and between the tire and the ground, so as to decelerate or stop the vehicle. Therefore, the friction coefficient, the fading performance, the mechanical performance and the like of the brake pad have great influence on the braking effect of the automobile.
However, the friction material for preparing the brake pad in the prior art has the defects of short service life caused by harmful components, poor quality stability and large abrasion, unstable friction performance caused by unreasonable preparation method and the like.
In summary, a friction material for an automobile with small change of friction coefficient with temperature and low abrasion degree and a preparation method thereof are lacked in the current field.
Disclosure of Invention
The invention aims to provide a friction material for a motor vehicle and a preparation method thereof.
In order to achieve the purpose, the invention provides a friction material for a motor vehicle, which consists of resin, calcium sulfate whiskers, graphite, aluminum fibers, rubber, dolomite, wollastonite, aramid fibers, silicon dioxide, brass and potassium titanate whiskers, and is prepared from the following raw materials in parts by weight: 10-20 parts of phenolic resin, 10-15 parts of calcium sulfate whisker, 5-10 parts of graphite, 15-20 parts of aluminum fiber, 4-10 parts of nitrile rubber, 10-20 parts of dolomite, 10-15 parts of wollastonite, 2-4 parts of aramid fiber, 2-6 parts of silica microsphere, 4-8 parts of brass, 6-10 parts of potassium tetratitanate whisker and 8-12 parts of octatitanate whisker.
Preferably, the resin is a phenolic resin.
Preferably, the rubber is nitrile rubber.
Preferably, the silica is silica microspheres.
Preferably, the potassium titanate whiskers comprise one or more of potassium tetratitanate whiskers and potassium octatitanate whiskers.
Preferably, the friction material is composed of the following raw materials in parts by weight: 10 parts of phenolic resin, 10 parts of calcium sulfate whisker, 5 parts of graphite, 15 parts of aluminum fiber, 4 parts of nitrile rubber, 10 parts of dolomite, 10 parts of wollastonite, 2 parts of aramid fiber, 2 parts of silica microsphere, 4 parts of brass, 6 parts of potassium tetratitanate whisker and 8 parts of octatitanic acid whisker.
Preferably, the friction material is composed of the following raw materials in parts by weight: 20 parts of phenolic resin, 15 parts of calcium sulfate whisker, 10 parts of graphite, 20 parts of aluminum fiber, 10 parts of nitrile rubber, 20 parts of dolomite, 15 parts of wollastonite, 4 parts of aramid fiber, 6 parts of silica microsphere, 8 parts of brass, 10 parts of potassium tetratitanate whisker and 12 parts of octatitanic acid whisker.
Preferably, the friction material is composed of the following raw materials in parts by weight: 15 parts of phenolic resin, 12 parts of calcium sulfate whisker, 8 parts of graphite, 18 parts of aluminum fiber, 6 parts of nitrile rubber, 15 parts of dolomite, 12 parts of wollastonite, 3 parts of aramid fiber, 4 parts of silica microsphere, 6 parts of brass, 8 parts of potassium tetratitanate whisker and 10 parts of octatitanic acid whisker.
The invention also provides a preparation method of the friction material for the motor vehicle, which comprises the following steps:
(1) mixing phenolic resin, calcium sulfate whiskers, graphite, aluminum fibers, dolomite, wollastonite, silica microspheres and brass according to the components, feeding the mixture into a stirrer for stirring, keeping the temperature at less than or equal to 60 ℃, and treating for 40-50 min at the rotating speed of the stirrer of 1100-1200 rad/min;
(2) opening a feeding port of a stirrer, sequentially keeping the temperature of nitrile rubber, aramid fiber, potassium tetratitanate whiskers and potassium octatitanate whiskers to be less than or equal to 60 ℃, treating the mixture for 20-30 min at the rotating speed of the stirrer of 800-1000 rad/min, and standing the mixture to cool the mixture to room temperature to obtain a mixture;
(3) uniformly adding the mixture into a mold cavity of a forming machine, and carrying out hot pressing, wherein the temperature of an upper mold is 155 +/-5 ℃, the temperature of a lower mold is 165 +/-5 ℃, and the actual temperature of the mold cavity is 120 +/-5 ℃ to obtain a semi-finished product;
(4) and (4) performing thermal treatment on the molded semi-finished product in the step (3) in an oven by adopting hot air circulation electric heating for 36-40 h to obtain the product.
Compared with the prior art, the invention has the following beneficial effects:
1. the friction material has the advantages of strong quality stability, small friction coefficient change along with the change of temperature, low abrasion degree, good abrasion performance and thermal stability, and can effectively prolong the service life of the brake pad and improve the quality safety of the product when being applied to the preparation of the brake pad of the motor vehicle.
2. The raw materials of the invention are sufficient in China and proper in price, so that the large-scale production of the invention is not limited by too high cost; meanwhile, the preparation method is simple, the total production cost is low, and the industrial large-scale production is facilitated.
Detailed Description
Example 1
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing phenolic resin, calcium sulfate whisker, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres and brass according to the components, feeding the mixture into a stirrer for stirring, keeping the temperature at less than or equal to 60 ℃, and treating for 40min at the rotating speed of the stirrer of 1100 rad/min;
(2) opening a feeding port of a stirrer, sequentially keeping the temperature of the nitrile rubber, the aramid fiber, the potassium tetratitanate whisker and the potassium octatitanate whisker to be less than or equal to 60 ℃, treating for 20min at the rotating speed of the stirrer of 800rad/min, standing and cooling to room temperature to obtain a mixture;
(3) uniformly adding the mixture into a mold cavity of a forming machine, and carrying out hot pressing, wherein the temperature of an upper mold is 155 ℃, the temperature of a lower mold is 165 ℃, and the actual temperature of the mold cavity is 120 +/-5 ℃, so as to obtain a semi-finished product;
(4) and (4) performing thermal treatment on the molded semi-finished product in the step (3) in an oven by adopting hot air circulation electric heating for 36 hours to obtain the product.
Example 2
(1) Mixing phenolic resin, calcium sulfate whisker, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres and brass according to the components, feeding the mixture into a stirrer for stirring, keeping the temperature at less than or equal to 60 ℃, and treating for 50min at the rotating speed of the stirrer of 1200 rad/min;
(2) opening a feeding port of a stirrer, sequentially keeping the temperature of the nitrile rubber, the aramid fiber, the potassium tetratitanate whisker and the potassium octatitanate whisker to be less than or equal to 60 ℃, treating for 30min at the rotating speed of the stirrer of 1000rad/min, standing and cooling to room temperature to obtain a mixture;
(3) uniformly adding the mixture into a mold cavity of a forming machine, and carrying out hot pressing, wherein the temperature of an upper mold is 160 ℃, the temperature of a lower mold is 170 ℃, and the actual temperature of the mold cavity is 120 +/-5 ℃, so as to obtain a semi-finished product;
(4) and (4) performing thermal treatment on the molded semi-finished product in the step (3) in an oven by adopting hot air circulation electric heating for 40 hours to obtain the product.
Example 3
(1) Mixing phenolic resin, calcium sulfate whisker, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres and brass according to the components, feeding the mixture into a stirrer for stirring, keeping the temperature at less than or equal to 60 ℃, and treating for 50min at the rotating speed of the stirrer of 1100 rad/min;
(2) opening a feeding port of a stirrer, sequentially keeping the temperature of the nitrile rubber, the aramid fiber, the potassium tetratitanate whisker and the potassium octatitanate whisker to be less than or equal to 60 ℃, treating for 20min at the rotating speed of the stirrer of 1000rad/min, standing and cooling to room temperature to obtain a mixture;
(3) uniformly adding the mixture into a mold cavity of a forming machine, and carrying out hot pressing, wherein the temperature of an upper mold is 150 ℃, the temperature of a lower mold is 160 ℃, and the actual temperature of the mold cavity is 120 +/-5 ℃, so as to obtain a semi-finished product;
(4) and (4) performing thermal treatment on the molded semi-finished product in the step (3) in an oven by adopting hot air circulation electric heating for 40 hours to obtain the product.
Comparative example 1
(1) Mixing phenolic resin, calcium sulfate whisker, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres and brass according to the components, feeding the mixture into a stirrer for stirring, keeping the temperature at less than or equal to 60 ℃, and treating for 50min at the rotating speed of the stirrer of 1100 rad/min;
(2) opening a feeding port of a stirrer, sequentially keeping the temperature of the nitrile rubber, the aramid fiber and the potassium tetratitanate whisker to be less than or equal to 60 ℃, treating for 20min at the rotating speed of the stirrer of 1000rad/min, standing and cooling to room temperature to obtain a mixture;
(3) uniformly adding the mixture into a mold cavity of a forming machine, and carrying out hot pressing, wherein the temperature of an upper mold is 150 ℃, the temperature of a lower mold is 160 ℃, and the actual temperature of the mold cavity is 120 +/-5 ℃, so as to obtain a semi-finished product;
(4) and (4) performing thermal treatment on the molded semi-finished product in the step (3) in an oven by adopting hot air circulation electric heating for 40 hours to obtain the product.
TABLE 1
| Kind of material | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Phenolic resin | 10 | 15 | 20 | 20 |
| Calcium sulfate whisker | 10 | 12 | 15 | 15 |
| Graphite | 5 | 8 | 10 | 10 |
| Aluminum fiber | 15 | 18 | 20 | 20 |
| Nitrile rubber | 4 | 6 | 10 | 10 |
| Dolomite | 10 | 15 | 20 | 20 |
| Wollastonite | 10 | 12 | 15 | 15 |
| Aramid fiber | 2 | 3 | 4 | 4 |
| Silica microspheres | 2 | 4 | 6 | 6 |
| Brass | 4 | 6 | 8 | 8 |
| Potassium tetratitanate whisker | 6 | 8 | 10 | 10 |
| Potassium octatitanate whisker | 8 | 10 | 12 | / |
EXAMPLE 4 brake pad Performance test
According to GB5763-2018, the brake pad finished products prepared in examples 1-5 and comparative examples 1-2 are tested on a constant speed friction tester and a CSS-44100 universal material tester respectively, and the friction coefficient mu and the wear rate V (10-7cm3N-1m-1) (ii) a The test results are shown in Table 2.
TABLE 2 brake pad Performance test results
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (9)
1. The friction material for the motor vehicle is characterized by comprising the following raw materials in parts by weight: 10-20 parts of phenolic resin, 10-15 parts of calcium sulfate whisker, 5-10 parts of graphite, 15-20 parts of aluminum fiber, 4-10 parts of nitrile rubber, 10-20 parts of dolomite, 10-15 parts of wollastonite, 2-4 parts of aramid fiber, 2-6 parts of silica microsphere, 4-8 parts of brass, 6-10 parts of potassium tetratitanate whisker and 8-12 parts of octatitanate whisker.
2. The friction material of claim 1 wherein said resin is a phenolic resin.
3. The friction material of claim 1 wherein said rubber is nitrile rubber.
4. The friction material of claim 1 wherein said silica is silica microspheres.
5. The friction material of claim 1, wherein the potassium titanate whiskers comprise one or a combination of more than one of potassium tetratitanate whiskers and potassium octatitanate whiskers.
6. The friction material of claim 1, wherein the friction material is comprised of the following raw materials in parts by weight: 10 parts of phenolic resin, 10 parts of calcium sulfate whisker, 5 parts of graphite, 15 parts of aluminum fiber, 4 parts of nitrile rubber, 10 parts of dolomite, 10 parts of wollastonite, 2 parts of aramid fiber, 2 parts of silica microsphere, 4 parts of brass, 6 parts of potassium tetratitanate whisker and 8 parts of octatitanic acid whisker.
7. The friction material of claim 1, wherein the friction material is comprised of the following raw materials in parts by weight: 20 parts of phenolic resin, 15 parts of calcium sulfate whisker, 10 parts of graphite, 20 parts of aluminum fiber, 10 parts of nitrile rubber, 20 parts of dolomite, 15 parts of wollastonite, 4 parts of aramid fiber, 6 parts of silica microsphere, 8 parts of brass, 10 parts of potassium tetratitanate whisker and 12 parts of octatitanic acid whisker.
8. The friction material of claim 1, wherein the friction material is comprised of the following raw materials in parts by weight: 15 parts of phenolic resin, 12 parts of calcium sulfate whisker, 8 parts of graphite, 18 parts of aluminum fiber, 6 parts of nitrile rubber, 15 parts of dolomite, 12 parts of wollastonite, 3 parts of aramid fiber, 4 parts of silica microsphere, 6 parts of brass, 8 parts of potassium tetratitanate whisker and 10 parts of octatitanic acid whisker.
9. A method of making the cable of claim 1, comprising the steps of:
(1) mixing phenolic resin, calcium sulfate whiskers, graphite, aluminum fibers, dolomite, wollastonite, silica microspheres and brass according to the components, feeding the mixture into a stirrer for stirring, keeping the temperature at less than or equal to 60 ℃, and treating for 40-50 min at the rotating speed of the stirrer of 1100-1200 rad/min;
(2) opening a feeding port of a stirrer, sequentially keeping the temperature of nitrile rubber, aramid fiber, potassium tetratitanate whiskers and potassium octatitanate whiskers to be less than or equal to 60 ℃, treating the mixture for 20-30 min at the rotating speed of the stirrer of 800-1000 rad/min, and standing the mixture to cool the mixture to room temperature to obtain a mixture;
(3) uniformly adding the mixture into a mold cavity of a forming machine, and carrying out hot pressing, wherein the temperature of an upper mold is 155 +/-5 ℃, the temperature of a lower mold is 165 +/-5 ℃, and the actual temperature of the mold cavity is 120 +/-5 ℃ to obtain a semi-finished product;
(4) and (4) performing thermal treatment on the molded semi-finished product in the step (3) in an oven by adopting hot air circulation electric heating for 36-40 h to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110474330.4A CN113512266A (en) | 2021-04-29 | 2021-04-29 | Friction material for motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110474330.4A CN113512266A (en) | 2021-04-29 | 2021-04-29 | Friction material for motor vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN113512266A true CN113512266A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110474330.4A Pending CN113512266A (en) | 2021-04-29 | 2021-04-29 | Friction material for motor vehicle |
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| Country | Link |
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| CN (1) | CN113512266A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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