A preparation method of modified carbon fiber friction particles

Abstract

The invention discloses a preparation method of a modified carbon fiber friction particle. The modified carbon fiber friction particle is prepared from asphalt powder, epoxy resin, styrene butadiene rubber, nitrile butadiene rubber, coconut shell, phenol, polyvinyl alcohol and other raw materials. The method provided by the invention employs coconut shell to prepare porous carbon fiber, and by means of multiple modification process treatment, porous carbon fiber with high mechanical strength and high abrasion resistance can be obtained, then the porous carbon fiber is subjected to sizing withnitrile butadiene rubber, and then kneading is carried out. The modified carbon fiber friction particle has a stable hollow structure inside, also has high elasticity, high porosity and high temperature performance stability, and has a wider application range than traditional friction materials. At the same time, the raw materials involved in the invention have wide sources, the preparation methodis simple, and the obtained friction particle is wear resistant and high temperature resistant, and has good market prospects.

Description

technical field

[0001] The invention relates to the technical field of friction materials, in particular to a method for preparing modified carbon fiber friction particles. Background technique

[0002] As a product of modern industry, friction materials play an increasingly important role in the national economy and people's social life. With the rapid development of the automobile industry, the application of friction materials in automobile manufacturing is becoming more and more extensive. The ever-increasing needs for safety, comfort and environmental protection also put forward new requirements for the development of automobile friction materials. Automobile brake pads produce frictional braking effect by bearing external pressure during work, so that the vehicle can achieve the purpose of braking.

[0003] At present, friction materials are manufactured by weighing various raw materials in a dry state and then mixing them to obtain a mixture. The added particles are ...