Low-abrasion environment-friendly composite ceramic-based friction material

Abstract

The invention discloses a low-abrasion environment-friendly composite ceramic-based friction material which comprises the following components in percentage by weight: 5 to 7 phenolic resin, 5 to 9 nitrile rubber, 2 to 5 aramid fiber, 2 to 6 silicon carbide, 15 to 20 ceramic fiber, 3 to 5 zirconia, 8 to 10 artificial graphite, 3 to 10 molybdenum disulphide, 5 to 15 zirconium silicate, 1 to 3 aluminum oxide, 8 to 10 potassium titanate whiskers, 5 to 15 precipitated barium sulfate, 1 to 3 magnesium oxide, 1 to 3 petroleum coke, 3 to 5 friction powder, 8 to 10 vermiculite and 4 to 9 boron nitride. The invention has the advantages that the friction material manufactured by using the components and the blending ratio has the advantages of no asbestos and brake noise, low wear rate, stable high-temperature brake performance, stable speed reduction brake, lower cost than the similar imported products, and the like.

Description

technical field [0001] The invention relates to a friction material, in particular to a low-wear and environment-friendly composite ceramic-based friction material. Background technique [0002] At present, the types of friction materials used in domestic vehicles can be divided into three types: [0003] 1) Asbestos-based: Its manufacturing cost is low and the process is simple; it is mainly used for agricultural vehicles and construction machinery. [0004] Its disadvantages: asbestos is harmful to the human body, pollutes the environment, suffers from severe heat decay at high temperature, poor braking performance, and low safety factor. This kind of product has been decreasing year by year and is an obsolete product. [0005] 2) Semi-metal base: It has good temperature resistance and decay resistance at high temperature, and the manufacturing cost is moderate; it is widely used in China. [0006] Its disadvantages: high hardness of the product, noise during braking, es...

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Problems solved by technology

[0004] Its disadvantages: asbestos is harmful to the human body, pollutes the environment, suffers from severe high-temperature heat decay, poor braking performance, and small safety factor. This kind of product has been decreasing year by year and is an obsolete product.

[0006] Its disadvantages: high hardness of the product, noise during braking, especially low-speed braking or morning effect, easy to generate noise, easy to rust on the surface of the product, and corrode the counterpart at the same time, high thermal conductivity, when the friction temperature is higher than 300 ℃ At the same time, it is easy to decompose the adhesive between the friction material and the steel sheet. On the other hand, the high friction heat is quickly transmitted to the hydraulic mechanism of the brake, resulting in the aging of the hydraulic "O" seal ring and the air resistance of the brake fluid, resulting in brake failure.

[0008] Disadvantages: Noise and dust problems have not been solved, easy to rust