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A preparation method of modified carbon fiber friction particles

A technology of friction particles and modified carbon, which is applied in the field of friction materials, can solve the problems of low adsorption performance and poor interface adhesion between materials, and achieve the effects of high porosity, strong wear resistance and high elasticity

Active Publication Date: 2020-03-10
南京赛富汽车科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, because the carbon fiber preparation process includes carbonization or graphitization, the carbon atom stacking orientation on the carbon fiber surface is more consistent, and the atomic layer spacing is smaller, so the fiber surface is non-polar and chemically inert. In addition, the carbon fiber surface has hydrophobic, Shortcomings such as smoothness and low adsorption performance lead to poor interfacial bonding between carbon fiber and its composite material

Method used

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Experimental program
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Embodiment Construction

[0022] A method for preparing modified carbon fiber friction particles, comprising the following steps:

[0023] (1) Put the spinning solution in the electrospinning apparatus, wrap the receiver with aluminum foil, and collect the as-spun fibers on the aluminum foil. The process parameters of the spinning process are positive pressure 15kV, negative pressure 1.5kV, and advance rate 0.04 mm / min, the receiving rate is 30r / min, the distance between the needle and the receiver is 15cm, and the ambient temperature is 30°C. After the spinning is completed, let it stand at room temperature for one day to obtain the as-spun fiber, and then place it in an oven to raise the temperature. Solidify at 160°C for 60 minutes, take it out and put it into a tube furnace, raise the temperature from room temperature to 750°C at a rate of 5°C / min under a nitrogen atmosphere, keep it warm for 1 hour, and obtain carbon fibers after natural cooling;

[0024] (2) Use the carbon fiber obtained in step ...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14C08L9/02C08L9/06C08K9/12C08K7/06D01F9/16D01F9/17D06M15/55D06M15/01D06M101/40
CPCC08L9/02C09K3/1436D01F9/16D01F9/17D06M15/01D06M15/55D06M2101/40C08L9/06C08K9/12C08K7/06
Inventor 孙仁贵
Owner 南京赛富汽车科技有限公司
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