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Electric tricycle brake pad material and its preparation process

A technology for electric tricycles and brake pads, used in friction linings, mechanical equipment, other chemical processes, etc., can solve the problems of easy decay of friction coefficient, poor thermal stability, surface temperature wear, etc., and achieve stable friction coefficient and softening temperature. Good heat resistance and adhesion, and the effect of improving strength and wear resistance

Active Publication Date: 2017-05-17
山东金立车业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the outstanding problems of asbestos-type brake pads are low strength, poor thermal stability, and easy wear, which have been gradually eliminated; metal brake pads are still the main type of brake pads, and the main material steel fiber is used as a reinforcing fiber. Due to the high metal content, its The thermal conductivity and strength have been improved to a certain extent, but due to the better road conditions in cities and highways, and the popularity of family cars, the good road conditions lead to faster speeds, and the brake pads bear greater stress when braking. Steel brakes First, the chip is noisy, and second, due to the general heat dissipation, the surface temperature is too high, resulting in obvious thermal degradation and serious wear, greatly shortening the service life and prone to safety accidents
The formula design of ceramic brake pads is not perfect, the main performance is: the performance is not stable enough, the friction coefficient of many brake pads is easy to decline at high temperature, and even the friction material expands, and there are serious technical problems such as cracks on the friction surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Electric tricycle brake pad material, which is prepared from the following raw materials in parts by weight:

[0021] 1 part of diatomite, 1 part of silica gel powder, 1 part of nano cerium oxide, 1 part of sodium silicate, 2 parts of graphite fiber, 2 parts of calcium fluoride, 3 parts of glass fiber, 3 parts of zinc stearate, 5 parts of chitin , 6 parts of aluminum nitride, 7 parts of silicon carbide, 7 parts of polypropylene resin, 10 parts of boron nitride, 10 parts of styrene-butadiene rubber, 11 parts of vinyl chloride resin, 13 parts of nickel powder. Wherein, the particle diameter of silica gel powder is 400 orders; The modulus n of sodium silicate glass is 3.2; The diameter of glass fiber or graphite fiber is 20um, and length is 50um; The particle diameter of described nano cerium oxide is 50nm; Calcium fluoride, Zinc stearate, aluminum nitride, silicon carbide, boron nitride and nickel powder all have a particle size of 400 mesh.

[0022] The preparation proc...

Embodiment 2

[0030] Electric tricycle brake pad material, which is prepared from the following raw materials in parts by weight:

[0031] 2 parts of diatomite, 2 parts of silica gel powder, 2 parts of nano cerium oxide, 2 parts of sodium silicate, 3 parts of graphite fiber, 3 parts of calcium fluoride, 4 parts of glass fiber, 4 parts of zinc stearate, 6 parts of chitin , 8 parts of aluminum nitride, 9 parts of silicon carbide, 9 parts of polypropylene resin, 12 parts of boron nitride, 12 parts of styrene-butadiene rubber, 13 parts of vinyl chloride resin, 15 parts of nickel powder. The particle diameter of described silica gel powder is 300 orders; The modulus n of sodium silicate glass is 3.2; The diameter of glass fiber or graphite fiber is 10um, and length is 30um; The particle diameter of described nano cerium oxide is 20nm; Calcium fluoride, Zinc stearate, aluminum nitride, silicon carbide, boron nitride and nickel powder all have a particle size of 300 mesh.

[0032] The preparation...

Embodiment 3

[0040] According to the national standard GB5763-2008, the brake pads prepared in Example 1 and the steel semi-metallic brake pads commonly used in the market (control) were subjected to friction tests on a constant-speed friction machine. The specific test results are shown in Table 1:

[0041] Table 1

[0042] temperature °C Heating / Friction Coefficient (Example 1) Heating / Friction Coefficient (Control) Cooling / Friction Coefficient (Example 1) Cooling / Friction Coefficient (Control) Wear rate (Example 1) Wear rate (control) 100 0.42 0.25 0.44 0.30 0.10 0.22 150 0.43 0.28 0.45 0.31 0.11 0.23 200 0.45 0.31 0.46 0.32 0.12 0.26 250 0.47 0.33 0.46 0.33 0.14 0.29 300 0.47 0.29 0.46 0.32 0.14 0.33 350 0.46 0.26 0.47 0.31 0.16 0.37

[0043] It can be seen that the friction performance of the brake pad prepared by the present invention is stable in the high temperature stage, and the wear rate is low, ...

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Abstract

The invention relates to the field of parts of electro-tricycles, in particular to a brake pad material of an electro-tricycle. The brake pad material is prepared from the following raw materials: diatomite, silica gel powder, nano cerium oxide, sodium water glass, graphite fiber, calcium fluoride, glass fiber, zinc stearate, chitin, aluminum nitride, silicon carbide, polypropylene resin, boron nitride, butadiene styrene rubber, vinisol and nickel powder. The brake pad material prepared according to the preparation method is stable in high-temperature stage friction property, relatively low in wear rate, and superior to like products in the market.

Description

technical field [0001] The invention relates to the field of electric tricycle parts, in particular to a brake pad material for an electric tricycle and a preparation process thereof. Background technique [0002] Brake pads are also called brake pads. In the vehicle's braking system, the brake pads are the most critical safety parts. The brake pads play a decisive role in the quality of all braking effects, so good brake pads are an important guarantee for vehicle safety. The working principle of the brake is mainly from friction, using 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, and stop the car. A good and efficient braking system must be able to provide stable, sufficient and controllable braking force, and have good hydraulic transmission and heat dissipation capabilities, so as to ensure that the force exerted by the driver from the brake pedal ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14F16D69/02
Inventor 曹祥奇穆林宋家隆卞建程
Owner 山东金立车业有限公司