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Resin-based friction material

A friction material and resin-based technology, applied in the field of friction materials, can solve problems such as friction and wear performance degradation, affecting driving brake safety, etc.

Inactive Publication Date: 2011-02-09
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Friction material is the key material for brakes and clutches of brake vehicles. The most commonly used friction material is resin-based friction material, but the resin matrix in this material will produce serious thermal decomposition when the working temperature exceeds 250 ° C, which makes its friction and wear performance Severe recession affecting braking safety for motorists

Method used

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preparation example Construction

[0028] see figure 1 , figure 1 It is a schematic flow chart of a preferred embodiment of the preparation method of the resin-based friction material of the present invention. The preparation method of the resin-based friction material of the preferred embodiment of the present invention comprises the following steps:

[0029] Step S1: Weigh the raw materials of each component of the resin-based friction material by mass percentage, mix them uniformly, and obtain a mixture, wherein the mass percentage of each component raw material is 10-40% mullite, 10-40% 30% phenolic resin, 10-30% barium sulfate, 5-20% feldspar powder, 1-10% carbon black and 0.1-5% zinc stearate.

[0030] The uniform mixing in this step is specifically to manually premix the weighed raw materials respectively, and then mix them in a high-speed mixer for 40 minutes.

[0031] Step S2: Add styrene-butadiene rubber with a mass percentage of 10 to 30% into the open mill, knead for 20 minutes at the temperature...

Embodiment 1

[0037] One of the raw materials is mullite with a median diameter of 12.80 μm and a mass content of 10%, and then mixed with 18% phenolic resin, 18% styrene-butadiene rubber, 0.9% zinc stearate, and 10.8% carbon Black, 27.9% barium sulfate, and 14.4% feldspar powder were used as raw materials, and the resin-based friction material mixed with mullite was made by blending and dry hot pressing. When the resin-based friction material is tested for friction and wear at 350°C, its friction coefficient (μ) and wear rate (V) are 0.38 and 0.67×10-7cm respectively 3 / (N·m).

Embodiment 2

[0039] One of the raw materials is mullite with a median diameter of 5.26 μm and a mass content of 10%, and then mixed with 18% phenolic resin, 18% styrene-butadiene rubber, 0.9% zinc stearate, and 10.8% carbon Black, 27.9% barium sulfate, and 14.4% feldspar powder were used as raw materials, and the resin-based friction material mixed with mullite was made by blending and dry hot pressing. When the resin-based friction material is tested for friction and wear at 350°C, the friction coefficient (μ) and wear rate (V) are 0.40 and 0.62×10-7cm respectively 3 / (N·m).

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PUM

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Abstract

The invention provides a resin-based friction material, which comprises the following components in percent by mass: 10 to 40 percent of mullite, 10 to 30 percent of phenolic resin, 10 to 30 percent of butadiene rubber, 10 to 30 percent of barium sulfate, 5 to 20 percent of feldspar powder, 1 to 10 percent of carbon black and 0.1 to 5 percent of zinc stearate, wherein the sum of the percent content of each component of the resin-based friction material is 100 percent. In the resin-based friction material, the mullite is taken as a component material of the friction material, and the high specific heat of the mullite is utilized to improve the thermal stability of the resin-based friction material, so that the heat fading resistance of an organic group friction material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a resin-based friction material. Background technique [0002] The automobile industry is a major industry in the world, and its safety performance is related to the safety of people's lives and property. Friction material is the key material for brakes and clutches of brake vehicles. The most commonly used friction material is resin-based friction material, but the resin matrix in this material will produce severe thermal decomposition when the working temperature exceeds 250 ° C, which makes its friction and wear performance Severe recession affects the braking safety of driving. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a resin-based friction material with better thermal fading resistance, aiming at the serious defect of the automobile brake friction material in the prior art, which has serious we...

Claims

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Application Information

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IPC IPC(8): C08K3/04C08K5/098C08K3/34C08L61/14C08K3/30C08L9/06B29B7/72C09K3/14C08K13/02B29C35/00
Inventor 侯贵华
Owner YANCHENG INST OF TECH
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