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A kind of friction material and preparation method thereof

A technology of friction material and prefabricated body, applied in the field of C/C-SiC friction material continuously reinforced with carbon fiber corrugated shape and its preparation, can solve the problems of low mechanical properties and thermal conductivity, unsuitable brake materials, low carbon fiber content, etc. Achieve good comprehensive mechanical properties and thermal conductivity, good braking effect, and ensure stability

Active Publication Date: 2021-06-29
牟航(岱山)碳陶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrugated carbon fiber can effectively improve interlayer shear performance and Z-direction (thickness direction) thermal conductivity, but because it uses short carbon fiber, the carbon fiber content is low when making friction materials, and the mechanical properties and thermal conductivity are low, so it is not suitable for brake material

Method used

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  • A kind of friction material and preparation method thereof
  • A kind of friction material and preparation method thereof
  • A kind of friction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a C / C-SiC friction material with carbon fiber S-shaped continuous reinforcement and a preparation method thereof.

[0057] The prepared carbon fiber S-shaped continuously reinforced C / C-SiC friction material is made of S-shaped carbon fiber cloth-S-shaped mesh tire-S-shaped carbon fiber cloth-S-shaped mesh tire in order to be laminated successively, such as figure 1 shown. The S-shaped carbon fiber cloth and the S-shaped net tire have the same S-shaped structure, so that they can be fitted together without leaving gaps. The thickness ratio of carbon cloth to net tire is 4:6, and the waveform is 180°rotationally symmetrical, so the proportion of carbon cloth material on any friction surface is 40vol%. The specific production steps are as follows:

[0058] (1) Preparation of S-shaped carbon fiber cloth: impregnate carbon fiber cloth in phenolic resin solution for 30 minutes to form pre-impregnated carbon cloth; arrange pre-impregnated carbon in...

Embodiment 2

[0078] Example 2 This example provides another carbon fiber S-shaped continuous reinforced C / C-SiC friction material and its preparation method.

[0079] The prepared carbon fiber S-shaped continuously reinforced C / C-SiC friction material is made of S-shaped carbon fiber cloth-S-shaped mesh tire-S-shaped carbon fiber cloth-S-shaped mesh tire in order to be laminated successively, such as figure 1 shown. The carbon fiber cloth and the mesh tire have the same S-shaped structure, so that they can be fitted together without leaving gaps. The thickness ratio of carbon cloth to net tire is 3:7, and the waveform is 180°rotationally symmetrical, so the proportion of carbon cloth material on any friction surface is 30vol%. The specific production steps are as follows:

[0080] (1) Preparation of S-shaped carbon fiber cloth: impregnate carbon fiber cloth in phenolic resin solution for 30 minutes to form pre-impregnated carbon cloth. Arrange the prepreg carbon in a forming mold with ...

Embodiment 3

[0095] This embodiment provides a C / C-SiC friction material with V-shaped continuous carbon fiber reinforcement and a preparation method thereof.

[0096] The prepared carbon fiber V-shaped continuously reinforced C / C-SiC friction material is made of V-shaped carbon fiber cloth-V-shaped net tire-V-shaped carbon fiber cloth-V-shaped net tire in sequence and stacked layers, as shown in Figure 5 shown. The carbon fiber cloth and the mesh tire have the same V-shaped structure, so that they can be fitted together without leaving gaps. The thickness ratio of carbon cloth to net tire is 3:7, and the waveform is 180°rotationally symmetrical, so the proportion of carbon cloth material on any friction surface is 30vol%. The specific production steps are as follows:

[0097] (1) Preparation of V-shaped carbon fiber cloth: The carbon fiber cloth is immersed in the phenolic resin solution for 30 minutes to form a pre-impregnated carbon cloth. Arrange the prepreg carbon in a forming mol...

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Abstract

A kind of friction material and its preparation method, the friction material of the present invention is made of corrugated carbon fiber cloth and corrugated net tire in order to be laminated successively; corrugated carbon fiber cloth and corrugated net tire have the same corrugated structure, and the laminate The latter same friction surface contains corrugated carbon fiber cloth material and corrugated net tire material at the same time. The invention also includes the preparation method of the friction material. By adopting the friction material of the present invention, it is possible to realize the braking effect continuously and simultaneously in the carbon cloth area and the net tire area during the friction braking process, which can ensure the stability of the friction coefficient and obtain a good braking effect. It can also be obtained according to different requirements. Friction material with adjustable coefficient of friction.

Description

technical field [0001] The invention relates to the technical field of C / C-SiC friction materials, in particular to a C / C-SiC friction material continuously reinforced with corrugated carbon fibers and a preparation method thereof. Background technique [0002] Compared with traditional metal and semi-metal friction materials, C / C-SiC friction materials have the advantages of low density, good corrosion resistance, stable friction coefficient and good wear resistance. They are the friction materials with the most development potential in the 21st century. It has good application prospects in the braking fields of airplanes, racing cars, heavy locomotives, high-speed trains, etc. [0003] According to the length of reinforced carbon fibers, C / C-SiC friction materials are generally divided into two types: short fiber reinforced and long fiber reinforced. Short fiber C / C-SiC friction materials are mainly made by mixing short carbon fibers, graphite powder, phenolic resin and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B35/622C04B35/84C04B35/65C04B35/565
CPCC04B35/573C04B35/622C04B35/65C04B35/83C04B2235/3826C04B2235/96C04B2235/9607
Inventor 龙宪海周峰汪莉匡湘铭何家琪王成华杨敏
Owner 牟航(岱山)碳陶有限公司