High-speed low-load medium friction coefficient basalt fiber reinforced friction material and preparation method

Abstract

The invention provides a high-speed low-load basalt fiber-reinforced frictional material with moderate frictional coefficient and a preparation method thereof. The high-speed low-load basalt fiber-reinforced frictional material comprises the following components in percentage by mass: 5-9% of basalt fibers, 15% of steel fibers, 4-10% of mineral fibers, 10% of acrylonitrile-butadiene rubber phenolic resin, 10% of barium sulfate, 8% of iron ore, 3% of alumina, 6.25% of white mica, 5% of vermiculite, 14% of petroleum coke, 3.75% of frictional powder and 12% of graphite. The preparation method comprises the following steps of: preparing raw materials, carrying out manual stirring, carrying out mechanical stirring, carrying out secondary manual stirring, carrying out secondary mechanical stirring, and carrying out hot press moulding and curing, so that the basalt fiber-reinforced frictional material is obtained. Excellent properties of the basalt fibers are utilized, expensive aramid fibers are replaced by cheap fibers, the high-speed low-load basalt fiber-reinforced frictional material has the advantages of stable frictional coefficient in high temperature working environment, relatively low wear rate and good heat fading resistance, the wear resistance and pressure-bearing capacity of the material are improved, the cost is reduced, the hardness is moderate, and requirements of the frictional material can be better met.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a basalt fiber-reinforced friction material with high-speed and low-load medium friction coefficient and a preparation method that utilizes the excellent performance of the basalt fiber material itself and replaces the expensive aramid fiber with the cheap basalt fiber. Background technique [0002] Foreign automobile friction materials have roughly experienced three stages of development: the first stage: this stage is that the braking system is mostly drum brake, and the friction material is based on asbestos. This kind of friction material is used in the automobile industry of developed countries to make asbestos brake friction pads for cars and light trucks, and the braking distance is specified at the same time; the second stage: the concept that asbestos is harmful to human health is becoming more and more popular, plus The world's energy crisis and the accelerat...

AI Technical Summary

Problems solved by technology

During the period when the automobile industry is gradually moving towards high speed, energy saving, high efficiency, and light weight, the friction material industry has also developed many non-asbestos friction materials, but these materials still have corrosion, large wear, and loud noise after use. Problems such as high cost have prompted developers to improve them

At this time, the comprehensive performance of the improved friction material has been further optimized. However, these can not meet the needs of the development of the automobile industry. Therefore, under the premise of ensuring cost and performance, it is still a research topic to comprehensively improve the performance of automobile friction materials. top priority

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