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Little-dust and low-metal friction material and preparation method thereof

A friction material and low-metal technology, applied in the direction of friction linings, chemical instruments and methods, mechanical equipment, etc., can solve problems such as difficulty in loosening, vibration, and easy corrosion, and achieve less brake heat decay and brake noise Low, not easy to rust effect

Inactive Publication Date: 2015-11-11
江苏普华力拓摩擦材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because asbestos is carcinogenic, there are currently two types of brake friction materials that are most widely used. One is semi-metallic brake friction materials reinforced with steel fibers. Too high, easy to rust, easy to cause screams and tremors when braking; the other is non-asbestos organic friction materials, mainly adding glass fiber, potassium titanate whiskers or aramid pulp as reinforcing materials, but Aramid fiber is expensive and difficult to open, which limits the application of this material
[0003] Moreover, the above-mentioned existing brake friction materials also have the problems of serious heat decay, no wear resistance, and a lot of ash falling.

Method used

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  • Little-dust and low-metal friction material and preparation method thereof
  • Little-dust and low-metal friction material and preparation method thereof
  • Little-dust and low-metal friction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Front brake pad one, the weight percentage of its component is as follows:

[0053] Nitrile modified phenolic resin 8%, nitrile rubber powder 5%, aramid fiber 2%, steel fiber 25%, cellulose fiber 4%, flake graphite 6%, artificial graphite 5%, barite 22%, friction Powder 3%, zircon powder 5%, expanded vermiculite 5%, diatomaceous earth 4%, petroleum coke 6%.

[0054] After the above-mentioned materials are processed according to the aforementioned processing method, they are tested on the rubbing material testing machine. The test results show that the friction coefficient at room temperature is 0.410, the friction coefficient at high temperature is 0.415, the grade is FF grade, the weight wear is 3.84%, and the thickness wear is 3.69%. The customer found that the ash falling situation has improved significantly.

[0055] Such as Figure 1-5 The shown wear report curve, the first decay test curve, the first recovery test curve, the second recovery test curve and the se...

Embodiment 2

[0057] Front brake pad two, the weight percentage of its component is as follows:

[0058] Nitrile modified phenolic resin 6%, nitrile rubber powder 3%, aramid fiber 3%, steel fiber 30%, cellulose fiber 6%, flake graphite 8%, artificial graphite 7%, barite 18%, friction Powder 2%, zircon powder 4.5%, expanded vermiculite 4.5%, diatomaceous earth 3%, petroleum coke 5%.

[0059] After the above-mentioned materials are processed according to the aforementioned processing method, they are tested on the rubbing material testing machine. The test results show that the friction coefficient at room temperature is 0.412, the friction coefficient at high temperature is 0.42, the grade is FF grade, the weight wear is 3.89%, and the thickness wear is 3.75%. The customer found that the ash falling situation has improved significantly.

[0060] The wear report curve, the first decay test curve, the first recovery test curve, the second recovery test curve and the second decay test curve ar...

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Abstract

The invention discloses a little-dust and low-metal friction material and a preparation method thereof. The friction material is composed of, by weight, binding agents, reinforced fibers, lubricating agents and filler, wherein the binding agents are composed of butyronitrile modified phenolic resin and butyronitrile rubber powder, the reinforced fibers are composed of aramid fibers, cellulosic fibers and steel fibers, the lubricating agents are composed of crystalline flake graphite and synthetic graphite, and the filler is composed of barite, friction powder, zircon powder and expanded vermiculite. The preparation method comprises the steps of batching, mixing, pressing, heat treating and machining. The little-dust and low-metal friction material and the preparation method thereof have the advantages that rusting does not occur easily, the braking noise is low, braking heat fading is reduced, wear resistance is higher and fall dust is little.

Description

technical field [0001] The invention relates to the field of friction materials, in particular to a low-dust and low-metal friction material and a preparation method thereof. Background technique [0002] With the development of the automobile industry and the improvement of environmental protection awareness in modern society, the working conditions of automobile brake friction materials are becoming more and more harsh, and their performance requirements are also getting higher and higher. For example, brake friction materials are required to have sufficient and stable friction coefficients , Good thermal conductivity, large heat capacity, certain high-temperature mechanical strength, good wear resistance and anti-adhesion, not easy to scratch the counterpart, no noise, low cost, no pollution to the environment, etc. Because asbestos is carcinogenic, there are currently two types of brake friction materials that are most widely used. One is semi-metallic brake friction mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
Inventor 黄乐杰
Owner 江苏普华力拓摩擦材料有限公司
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