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Friction material for motor vehicle

A technology for friction materials and motor vehicles, applied in friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of unstable friction properties of friction materials, unreasonable preparation methods, lack of small temperature changes, etc., to improve quality and safety. The effect of high stability, strong quality stability and low production cost

Inactive Publication Date: 2021-10-19
大冶市启发矿产品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the friction materials used to prepare brake pads in the prior art have defects such as harmful ingredients, poor quality stability, short service life caused by excessive wear, and unreasonable preparation methods that lead to unstable friction properties of friction materials.
[0004] In summary, there is currently a lack of a friction material for motor vehicles with a small change in friction coefficient with temperature and a low degree of wear in the field and its preparation method

Method used

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  • Friction material for motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Concrete raw material is weighed by table 1, and step preparation step is as follows:

[0024] (1) Mix phenolic resin, calcium sulfate whiskers, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres, and brass into the mixer for mixing according to the components, keep the temperature ≤ 60 ° C, and the speed of the mixer 1100rad / min, treatment 40min;

[0025] (2) Open the feeding port of the mixer, sequentially put nitrile rubber, aramid fiber, potassium tetratitanate whisker, potassium octatitanate whisker, keep the temperature ≤ 60 ℃, the mixer speed is 800rad / min, process for 20min, park and cool down to room temperature , to get the mixture;

[0026] (3) Add the mixture evenly into the mold cavity of the molding machine and hot press, wherein the upper mold temperature is 155°C, the lower mold temperature is 165°C, and the actual mold cavity temperature is 120±5°C to obtain a semi-finished product;

[0027] (4) Heat-treat the molded semi-finished p...

Embodiment 2

[0029] (1) Mix phenolic resin, calcium sulfate whiskers, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres, and brass into the mixer for mixing according to the components, keep the temperature ≤ 60 ° C, and the speed of the mixer 1200rad / min, treatment 50min;

[0030] (2) Open the feeding port of the mixer, sequentially put the nitrile rubber, aramid fiber, potassium tetratitanate whisker, potassium octatitanate whisker, keep the temperature ≤ 60 ℃, the speed of the mixer is 1000rad / min, process for 30min, park and cool down to room temperature , to get the mixture;

[0031] (3) Add the mixture evenly into the mold cavity of the molding machine and hot press, wherein the upper mold temperature is 160°C, the lower mold temperature is 170°C, and the actual mold cavity temperature is 120±5°C to obtain a semi-finished product;

[0032] (4) Heat-treat the molded semi-finished product of (3) in an oven for 40 hours with hot air circulation and electric heating ...

Embodiment 3

[0034] (1) Mix phenolic resin, calcium sulfate whiskers, graphite, aluminum fiber, dolomite, wollastonite, silica microspheres, and brass into the mixer for mixing according to the components, keep the temperature ≤ 60°C, and the mixer speed 1100rad / min, treatment 50min;

[0035] (2) Open the feeding port of the mixer, sequentially put nitrile rubber, aramid fiber, potassium tetratitanate whisker, potassium octatitanate whisker, keep the temperature ≤ 60 ℃, the speed of the mixer is 1000rad / min, process for 20min, park and cool down to room temperature , to get the mixture;

[0036] (3) Add the mixture evenly into the mold cavity of the molding machine and hot press, wherein the upper mold temperature is 150°C, the lower mold temperature is 160°C, and the actual mold cavity temperature is 120±5°C to obtain a semi-finished product;

[0037] (4) Heat-treat the molded semi-finished product of (3) in an oven for 40 hours with hot air circulation and electric heating to obtain fin...

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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 is high in quality stability, small in friction coefficient change along with temperature change, low in abrasion degree and good in abrasion performance and thermal stability, the service life of a brake pad can be effectively prolonged when the friction material is applied to preparation of the brake pad of a motor vehicle, and the quality safety of a product is improved.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a friction material for motor vehicles and a preparation method thereof. Background technique [0002] Automobile brake pad is a kind of friction material product used in automobile brakes to generate braking force by friction with brake disc or brake drum, so as to slow down or stop the automobile. The performance and quality of brake pads are directly related to the safety of people's lives and property and public safety. Brake pads are divided into disc brake pads and drum brake pads, which are used in automobile disc and drum brakes respectively. The working principle of the brake pad is to use the friction between the brake pad and the brake disc (drum) and the tire and the ground to convert the kinetic energy of the vehicle into heat energy after friction to slow down or stop the car. Therefore, the friction coefficient, decay performance and mechanical properties of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L9/02C08L77/10C08K13/04C08K7/08C08K3/04C08K7/06C08K7/18F16D69/02C09K3/14
CPCC08L61/06F16D69/02F16D69/028F16D69/023C09K3/149C08L2205/03C08L2205/16C08L2201/08F16D2200/0026F16D2200/003F16D2200/0052F16D2200/0056F16D2200/0086C08L9/02C08L77/10C08K13/04C08K7/08C08K3/04C08K7/06C08K7/18
Inventor 赵利槐
Owner 大冶市启发矿产品有限公司
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