Automobile brake pad

A technology for brake pads and automobiles, applied in the field of automobile brake pads, can solve the problems of low strength and easy cracks, etc., and achieve the effects of good high temperature resistance, small thermal decay, and small wear

Inactive Publication Date: 2015-07-15
陈巧兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an automobile brake pad, which can solve the problems of low strength and easy cracks at high temperature in existing ceramic brake pads

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The automobile brake pad in the present embodiment is made of the following raw materials in parts by weight: 15 parts of silicon nitride ceramic powder, 20 parts of silicon carbide fiber, 10 parts of ceramic adhesive, 4 parts of phenolic resin, 5 parts of rubber powder, friction 5 parts of powder, 30 parts of filler, 2 parts of nano-silica, 5 parts of sintering aid, and 1 part of defoamer; the filler is a mixture of barite powder and calcium carbonate powder with a weight ratio of 1:1.

[0011] During preparation, weigh the raw materials according to the above parts by weight, first mix the silicon nitride ceramic powder, silicon carbide fiber, rubber powder and friction powder evenly, then add other materials, and ball mill to make a uniformly mixed slurry. The obtained slurry is poured into molding, solidified and dried, hot-pressed and sintered under vacuum condition, then naturally cooled to room temperature with the furnace, and the obtained brake pad green body is...

Embodiment 2

[0014] The automobile brake pad in the present embodiment is made of the following raw materials in parts by weight: 25 parts of silicon nitride ceramic powder, 30 parts of silicon carbide fiber, 5 parts of ceramic adhesive, 5 parts of phenolic resin, 8 parts of rubber powder, friction 10 parts of powder, 25 parts of filler, 5 parts of nano silicon dioxide, 6 parts of sintering aid, 2 parts of defoamer; wherein the filler is a mixture of barite powder and calcium carbonate powder with a weight ratio of 1:1.

[0015] The friction coefficient variation range of the automobile brake pad that this embodiment makes is 0.42~0.45, and wear rate is 0.21, and impact strength is 4.72KJ / m 2 ; When the temperature is 700 ℃, the thermal decay phenomenon is not obvious, and there is no crack on the surface.

Embodiment 3

[0017] The automobile brake pad in the present embodiment is made of the following raw materials in parts by weight: 20 parts of silicon nitride ceramic powder, 40 parts of silicon carbide fiber, 8 parts of ceramic adhesive, 3 parts of phenolic resin, 10 parts of rubber powder, friction 8 parts of powder, 20 parts of filler, 3 parts of nano-silica, 8 parts of sintering aid, 3 parts of defoamer; wherein the filler is a mixture of barite powder and calcium carbonate powder with a weight ratio of 1:1.

[0018] The friction coefficient variation range of the automobile brake pad that this embodiment makes is 0.41~0.43, and wear rate is 0.24, and impact strength is 4.63KJ / m 2 ; When the temperature is 700 ℃, the thermal decay phenomenon is not obvious, and there is no crack on the surface.

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Abstract

The invention discloses an automobile brake pad, and relates to the technical field of automobile accessories. The automobile brake pad is prepared from the following raw materials in parts by weight: 15-25 parts of silicon nitride ceramic powder, 20-40 parts of silicon carbide fiber, 5-10 parts of ceramic bonding agent, 3-5 parts of phenolic resin, 5-10 parts of rubber powder, 5-10 parts of frication powder, 20-30 parts of filler, 2-5 parts of nano-silica, 5-8 parts of sintering aids and 1-3 parts of defoaming agent. Compared with the prior art, the automobile brake pad is high in strength, good in high temperature resistance, small in heat attenuation, stable in friction coefficient and less in abrasion.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an auto brake pad. Background technique [0002] The brake pad is a key part of the car braking system. It has a major impact on the braking effect. When braking, it is squeezed on the brake disc to generate friction to achieve the purpose of decelerating the vehicle. Therefore, the performance requirements for the brake pad are mainly good. Braking performance, low fading rate, good recovery performance, wear resistance, no noise, good heat resistance, etc. Most of the current market brake pads use semi-metal brake pads or low-metal brake pads. Semi-metal brake pads have disadvantages such as loud braking noise and brittle corners. Low-metal brake pads have greater wear and unstable friction performance at high temperatures. good. Ceramic brake pads are a new product developed in recent years. It has the advantages of stable friction coefficient, good thermal stability and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
Inventor 陈巧兰
Owner 陈巧兰
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