CN112343949A - High-heat-conductivity and low-thermal-expansion brake lining and preparation method thereof - Google Patents
High-heat-conductivity and low-thermal-expansion brake lining and preparation method thereof Download PDFInfo
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- CN112343949A CN112343949A CN202011232338.1A CN202011232338A CN112343949A CN 112343949 A CN112343949 A CN 112343949A CN 202011232338 A CN202011232338 A CN 202011232338A CN 112343949 A CN112343949 A CN 112343949A
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- brake lining
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- petroleum coke
- thermal expansion
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- 238000002360 preparation method Methods 0.000 title claims description 10
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 28
- 239000004917 carbon fiber Substances 0.000 claims abstract description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002008 calcined petroleum coke Substances 0.000 claims abstract description 16
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000005011 phenolic resin Substances 0.000 claims abstract description 14
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 229910021383 artificial graphite Inorganic materials 0.000 claims abstract description 11
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 11
- 239000000378 calcium silicate Substances 0.000 claims abstract description 11
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 239000002557 mineral fiber Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 3
- 238000005299 abrasion Methods 0.000 abstract description 7
- 239000000047 product Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—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
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0023—Shaping by 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
- F16D2250/0038—Surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to the technical field of friction braking, and particularly relates to a brake lining with high heat conduction and low thermal expansion. The brake lining with high heat conductivity and low thermal expansion is mainly prepared from the following components in parts by weight: 6-10 parts of phenolic resin, 6-12 parts of synthetic graphite, 3-5 parts of high-carbon crystalline flake graphite, 10-20 parts of precipitated barium sulfate, 10-15 parts of mineral fiber, 10-15 parts of calcium silicate whisker, and Cu-ZrW2O810-20 parts of calcined petroleum coke, 10-20 parts of calcined petroleum coke and 3-10 parts of carbon fiber. The brake lining prepared by the invention has the advantages of high thermal conductivity, low thermal expansion, stable friction coefficient, small abrasion, low noise and stable performance.
Description
Technical Field
The invention belongs to the technical field of friction braking, and particularly relates to a brake lining with high heat conductivity and low thermal expansion and a preparation method thereof.
Background
The brake block is a vital part of the motor vehicle, and the quality of the braking performance directly depends on the safety of the vehicle. With the progress of the automobile industry, the demand for brake pads for automobiles has been increasing, and in recent years, there has been a demand for development of friction materials that generate less braking noise, and disc brake linings containing no steel fibers or steel fibers and containing NAO materials have been widely used. In order to ensure the performance required for a friction material of NAO material used for a disc brake lining, a copper component such as copper or copper alloy fibers or particles is added as an essential component. In order to meet the requirement of the friction coefficient, friction-increasing materials such as zirconia, zircon powder and the like are required to be added, the formula has the defects of multiple materials, error prone in material preparation and inconvenience in tracing.
Disclosure of Invention
The invention aims to provide a brake lining with high heat conduction and low thermal expansion.
It is a further object of the present invention to provide a disc brake pad including the above brake lining.
It is a further object of the present invention to provide a method for producing the above brake lining.
According to the brake lining with high heat conductivity and low thermal expansion, the brake lining is mainly prepared from the following components in parts by weight: 6-10 parts of phenolic resin, 6-12 parts of synthetic graphite, 3-5 parts of high-carbon crystalline flake graphite, 10-20 parts of precipitated barium sulfate, 10-15 parts of mineral fiber, 10-15 parts of calcium silicate whisker, and Cu-ZrW2O810-20 parts of calcined petroleum coke, 10-20 parts of calcined petroleum coke and 3-10 parts of carbon fiber.
Cu-ZrW in the invention2O8Is Cu and ZrW2O8Can comprehensively utilize the high thermal conductivity of Cu and ZrW2O8Has a coefficient of thermal expansion matched to that of Si. Cu-ZrW2O8The method is generally applied to electrical devices and is not applied to the field of automobile braking. The invention is prepared by mixing Cu-ZrW2O8Compounding with carbon fiber and adjusting the mixture ratio to ensure that Cu-ZrW2O8The brake lining can be applied to the brake lining, and the brake lining which has high heat conduction and low thermal expansion performance, low noise and stable performance is obtained.
According to the brake lining with high heat conductivity and low thermal expansion, the brake lining is mainly prepared from the following components in parts by weight: 6 parts of phenolic resin, 6 parts of synthetic graphite, 3 parts of high-carbon crystalline flake graphite, 10 parts of precipitated barium sulfate, 10 parts of mineral fiber, 10 parts of calcium silicate whisker and Cu-ZrW2O810 parts of calcined petroleum coke and 3 parts of carbon fiber.
The brake lining with high heat conductivity and low thermal expansion according to the embodiment of the invention is mainly prepared from the following components in parts by weightAnd the following steps: 8 parts of phenolic resin, 8 parts of synthetic graphite, 4 parts of high-carbon flake graphite, 15 parts of precipitated barium sulfate, 12 parts of mineral fiber, 12 parts of calcium silicate whisker and Cu-ZrW2O815 parts of calcined petroleum coke and 8 parts of carbon fiber.
According to the brake lining with high heat conductivity and low thermal expansion, the brake lining is mainly prepared from the following components in parts by weight: 10 parts of phenolic resin, 12 parts of synthetic graphite, 5 parts of high-carbon crystalline flake graphite, 20 parts of precipitated barium sulfate, 15 parts of mineral fiber, 15 parts of calcium silicate whisker and Cu-ZrW2O820 parts of calcined petroleum coke and 10 parts of carbon fiber.
According to the disc brake pad of the embodiment of the invention, the disc brake pad comprises a steel backing and a high-thermal-conductivity and low-thermal-expansion brake lining connected to the steel backing, and the brake lining is mainly prepared from the following components in parts by weight: 6-10 parts of phenolic resin, 6-12 parts of synthetic graphite, 3-5 parts of high-carbon crystalline flake graphite, 10-20 parts of precipitated barium sulfate, 10-15 parts of mineral fiber, 10-15 parts of calcium silicate whisker, and Cu-ZrW2O810-20 parts of calcined petroleum coke, 10-20 parts of calcined petroleum coke and 3-10 parts of carbon fiber.
The preparation method of the disc brake pad according to the embodiment of the invention comprises the following steps:
(1) the carbon fiber and Cu-ZrW with the formula amount2O8Adding 1/4 formula amount of phenolic resin and 1/4 formula amount of precipitated barium sulfate into a roller type mixer, stirring for 3-5 min at 200-300 r/min, and premixing; adding the rest of the formula materials into a roller type mixer, stirring for 5-15 min under the condition of 400-500 r/min, and uniformly mixing the materials;
(2) the hot-pressing die is an ejection die, the lower layer is made of raw materials, and the upper layer is a steel backing; the hot-press forming temperature is 140-160 ℃, and the pressure is 400-500 kg/cm2The curing time is 8-10 min;
(3) carrying out heat treatment on the product subjected to the hot press molding in the step (2);
(4) and (4) grinding the product obtained in the step (3).
According to the preparation method of the disc brake pad, in the step (3), the heat treatment temperature is 160-170 ℃, and the heat treatment time is 3-5 hours;
according to the preparation method of the disc brake pad of the embodiment of the invention, in the step (1), the materials are stirred for 5min at the speed of 250r/min for premixing.
According to the method for manufacturing the disc brake pad of the embodiment of the invention, in the step (2), the control temperature of the hot press molding is 150 ℃, and the pressure is 450kg/cm2The curing time was 8 min.
According to the method for manufacturing the disc brake pad of the embodiment of the invention, in the step (3), the heat treatment temperature is 165 ℃ and the heat treatment time is 4 hours.
The invention has the beneficial effects that:
the brake lining has the advantages of simple formula components, convenient batching operation and strong traceability;
in the invention, Cu-ZrW is used2O8When the Cu-ZrW composite material is applied to a brake lining, the Cu-ZrW composite material is obtained by using carbon fibers in a matched manner and forming a firm framework by using the carbon fibers2O8The brake lining prepared by the invention not only has high thermal conductivity, low thermal expansion, stable friction coefficient, small abrasion, low noise and stable performance;
the brake lining of the invention does not need to add friction-increasing materials in the formula.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1 preparation of a brake lining according to the invention
Table 1 formulation ratio of brake lining of the present invention
The brake lining is processed according to the steps of raw material mixing, pressing, heat treatment and coping, and the preparation method comprises the following steps: .
(1) Mixing raw materials: the carbon fiber and Cu-ZrW with the formula amount2O8Adding the phenolic resin with the formula amount of 1/4 and the precipitated barium sulfate with the formula amount of 1/4 into a roller mixer, keeping the speed at 240r/min, stirring for 4min, and premixing; adding the rest of the formula materials into a roller type mixer, keeping the speed at 450r/min, stirring for 5min, and uniformly mixing the materials;
(2) pressing: adopting a one-step forming method, wherein the fabric and the bottom material are made of the same material, the hot-pressing die is an ejection die, the lower layer is made of the raw material, and the upper layer is made of a steel backing; the hot-press molding is carried out at the controlled temperature of 150 ℃ and the pressure of 450kg/cm2The curing time is 9 min;
(3) and (3) heat treatment: carrying out heat treatment on the hot-press formed product, wherein the heat treatment temperature is 140-160 ℃, and the heat treatment time is 3-5 h;
(4) grinding: and grinding the product to obtain a final finished product.
In the method, the rotating speed in the premixing of the raw materials can be 200, 250 or 300 r/min;
the premixing time of the raw materials can be 3, 4 or 5 min;
in the step (1), all the raw materials are uniformly mixed at a rotating speed of 400, 450 or 500r/min, and the stirring time can be selected from 5, 10 or 15 min;
in the step (2), the control temperature of the hot-press molding can be 140, 150 or 160 ℃, and the pressure can be 400, 450 or 500kg/cm2The curing time can be 8, 9 or 10 min;
in the step (3), the temperature is controlled to be 140, 150 or 160 ℃ during heat treatment, and the treatment time is 3, 4 or 5 hours.
The invention discovers that although Cu-ZrW2O8The brake lining has the characteristics of high heat conduction and low thermal expansion, but after the brake lining is added into a brake lining formula, the heat conduction performance and the thermal expansion performance of the obtained brake lining are not obviously improved, and the situations of uneven thermal expansion, high noise and the like occur. The invention uses carbon fiber and Cu-ZrW2O8The brake lining has the advantages of high thermal conductivity, low thermal expansion, stable friction coefficient, low abrasion, low noise and stable performance.
Example 2 verification of the Performance of the brake linings of the present invention
The invention adopts the brake lining prepared by the formulas of the examples 1-3, the commercial products and 2 groups of comparison products to carry out experiments and investigate the thermal expansion property and the friction coefficient of the brake lining, wherein, the formula of the comparison product 1 does not contain carbon fiber, other components and dosage are the same as the example 1, and the formula of the comparison product 2 does not contain Cu-ZrW2O8Other components and amounts were the same as in example 1.
The experimental procedure of thermal expansibility and friction coefficient was performed according to B5763-2008, and the specific results are shown in tables 2 and 3:
table 2 thermal expansion test results
As can be seen from Table 2, the procedure was followed to test 5 points on each sample, and it was found that the thermal expansion coefficient of the brake lining of comparative example 2, to which only carbon fibers were added, was substantially identical to that of the commercially available product; comparative example 1 formulation with Cu-ZrW alone2O8The thermal expansion coefficient of the brake lining product fluctuates in a large range of 0.39-0.98. Meanwhile, the noise occurrence rate of the product of the comparative example 1 is detected, the probability that the noise intensity is greater than 70dBA is 3.5 percent at most, and the probability that the noise intensity is greater than 90dBA is 1 percent. Cu-ZrW is added into the formula of the embodiment 1-3 of the invention at the same time2O8Thermal expansion coefficient dimension of product after being mixed with carbon fiberThe content of the active carbon is kept in a stable range of 0.3-0.58%. The detection of the noise occurrence rate of the products of examples 1 to 3 shows that the probability of the noise intensity of more than 70dBA of examples 1 to 3 of the invention is reduced to less than 2.5 percent, and the probability of the noise intensity of more than 90dBA is reduced to 0.
TABLE 3 Friction coefficient test results
As can be seen from Table 3, the brake linings of the embodiments 1 to 3 of the present invention have stable friction coefficient and small abrasion. Comparative example 1 in which Cu-ZrW was added alone2O8The friction coefficient is relatively stable, and the abrasion is slightly larger than that of the embodiment 1-3. Comparative example 2 in which only carbon fiber was added and Cu-ZrW was not added2O8The friction coefficient is lower, the abrasion is higher than that of the embodiment 1-3, and the abrasion is basically consistent with that of a commercial product.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The brake lining with high heat conductivity and low thermal expansion is characterized by being mainly prepared from the following components in parts by weight: 6-10 parts of phenolic resin, 6-12 parts of synthetic graphite, 3-5 parts of high-carbon crystalline flake graphite, 10-20 parts of precipitated barium sulfate, 10-15 parts of mineral fiber, 10-15 parts of calcium silicate whisker, and Cu-ZrW2O810-20 parts of calcined petroleum coke, 10-20 parts of calcined petroleum coke and 3-10 parts of carbon fiber.
2. A high thermal conductivity, low thermal expansion brake lining according to claim 1, prepared from the following constituents in parts by weight: 6 parts of phenolic resin, 6 parts of synthetic graphite, 3 parts of high-carbon crystalline flake graphite and precipitate10 parts of barium sulfate, 10 parts of mineral fiber, 10 parts of calcium silicate whisker and Cu-ZrW2O810 parts of calcined petroleum coke and 3 parts of carbon fiber.
3. A high thermal conductivity, low thermal expansion brake lining according to claim 1, prepared from the following constituents in parts by weight: 8 parts of phenolic resin, 8 parts of synthetic graphite, 4 parts of high-carbon flake graphite, 15 parts of precipitated barium sulfate, 12 parts of mineral fiber, 12 parts of calcium silicate whisker and Cu-ZrW2O815 parts of calcined petroleum coke and 8 parts of carbon fiber.
4. A high thermal conductivity, low thermal expansion brake lining according to claim 1, prepared from the following constituents in parts by weight: 10 parts of phenolic resin, 12 parts of synthetic graphite, 5 parts of high-carbon crystalline flake graphite, 20 parts of precipitated barium sulfate, 15 parts of mineral fiber, 15 parts of calcium silicate whisker and Cu-ZrW2O820 parts of calcined petroleum coke and 10 parts of carbon fiber.
5. The disc brake pad is characterized by comprising a steel backing and a high-thermal-conductivity and low-thermal-expansion brake lining connected to the steel backing, wherein the brake lining is mainly prepared from the following components in parts by weight: 6-10 parts of phenolic resin, 6-12 parts of synthetic graphite, 3-5 parts of high-carbon crystalline flake graphite, 10-20 parts of precipitated barium sulfate, 10-15 parts of mineral fiber, 10-15 parts of calcium silicate whisker, and Cu-ZrW2O810-20 parts of calcined petroleum coke, 10-20 parts of calcined petroleum coke and 3-10 parts of carbon fiber.
6. The method for manufacturing a disc brake pad according to claim 5, comprising the steps of:
(1) the carbon fiber and Cu-ZrW with the formula amount2O8Adding 1/4 formula amount of phenolic resin and 1/4 formula amount of precipitated barium sulfate into a roller type mixer, stirring for 3-5 min at 200-300 r/min, and premixing; the balance of the formulaAdding the materials into a roller type mixer, stirring for 5-15 min under the condition of 400-500 r/min, and uniformly mixing the materials;
(2) the hot-pressing die is an ejection die, the lower layer is made of raw materials, and the upper layer is a steel backing; the hot-press forming temperature is 140-160 ℃, and the pressure is 400-500 kg/cm2The curing time is 8-10 min;
(3) carrying out heat treatment on the product subjected to the hot press molding in the step (2);
(4) and (4) grinding the product obtained in the step (3).
7. The preparation method of the disc brake pad according to claim 6, wherein in the step (3), the heat treatment temperature is 160-170 ℃ and the heat treatment time is 3-5 h.
8. The method for manufacturing a disc brake pad according to claim 7, wherein in the step (1), the materials are stirred for 5min at a speed of 250r/min for premixing.
9. The manufacturing method of the disc brake pad according to claim 7, wherein the hot press molding in the step (2) is performed at a controlled temperature of 150 ℃ under a pressure of 450kg/cm2The curing time was 8 min.
10. The method for manufacturing a disc brake pad according to claim 7, wherein the heat treatment temperature in step (3) is 165 ℃ and the heat treatment time is 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232338.1A CN112343949B (en) | 2020-11-06 | 2020-11-06 | High-heat-conductivity and low-thermal-expansion brake lining and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232338.1A CN112343949B (en) | 2020-11-06 | 2020-11-06 | High-heat-conductivity and low-thermal-expansion brake lining and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112343949A true CN112343949A (en) | 2021-02-09 |
| CN112343949B CN112343949B (en) | 2022-10-18 |
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| CN202011232338.1A Active CN112343949B (en) | 2020-11-06 | 2020-11-06 | High-heat-conductivity and low-thermal-expansion brake lining and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819014A (en) * | 2022-12-29 | 2023-03-21 | 湖北飞龙摩擦密封材料股份有限公司 | Disc type brake lining and preparation method thereof |
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| CN106051005A (en) * | 2016-06-29 | 2016-10-26 | 芜湖德业摩擦材料有限公司 | High-temperature-resisting low-expansion brake piece |
| CN106117956A (en) * | 2016-06-29 | 2016-11-16 | 芜湖德业摩擦材料有限公司 | A kind of low noise high temperature resistant brake |
| CN109611480A (en) * | 2018-12-10 | 2019-04-12 | 湖北飞龙摩擦密封材料股份有限公司 | A kind of low abrasion drum brake lining and preparation method thereof |
-
2020
- 2020-11-06 CN CN202011232338.1A patent/CN112343949B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051005A (en) * | 2016-06-29 | 2016-10-26 | 芜湖德业摩擦材料有限公司 | High-temperature-resisting low-expansion brake piece |
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| CN115819014A (en) * | 2022-12-29 | 2023-03-21 | 湖北飞龙摩擦密封材料股份有限公司 | Disc type brake lining and preparation method thereof |
| CN115819014B (en) * | 2022-12-29 | 2023-11-10 | 湖北飞龙摩擦密封材料股份有限公司 | Disc brake lining and preparation method thereof |
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