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Modified carbon fiber/phenolic resin composite material and preparation method thereof

A technology of phenolic resin and composite materials, which is applied in the field of composite materials, can solve the problems of uneconomical and high cost, and achieve the effects of increasing the contact area, improving performance, and improving overall performance

Active Publication Date: 2022-08-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of lignin carbon fiber is still much higher than that of carbon fiber derived from polyacrylonitrile.
The patented method is not economical

Method used

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  • Modified carbon fiber/phenolic resin composite material and preparation method thereof
  • Modified carbon fiber/phenolic resin composite material and preparation method thereof
  • Modified carbon fiber/phenolic resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A carbon fiber surface modification technology is characterized in that comprising the following operation steps:

[0050] (1) Remove the sizing agent on the surface of the original carbon fiber at high temperature: put the 10*10cm size T300 carbon fiber cloth into the muffle furnace for high temperature treatment, the treatment temperature is set to 400 ℃, and the working time is 120min;

[0051] (2) Electrochemical oxidation: the carbon fiber after the high temperature treatment in step (1) is put into the electrolysis reaction tank as the electrolytic anode material, the electrolyte is selected as a dilute sulfuric acid solution with a volume fraction of 40%, the cathode material is selected as a platinum electrode, and the electrolysis voltage is 5V , the electrochemical treatment time is 20min;

[0052] (3) washing: at room temperature, the carbon fiber after the electrochemical treatment of step (2) is washed and suction filtered with washing solution, the washing...

Embodiment 2

[0061] Other conditions are the same as in Example 1, except that in step (1), the temperature during high temperature treatment is 300°C.

Embodiment 3

[0063] Other conditions are the same as in Example 1, except that in step (1), the temperature during high temperature treatment is 500°C.

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Abstract

The invention relates to a modified carbon fiber / phenolic resin composite material, which is obtained by coating the surface of surface modified carbon fiber with phenolic resin and then carrying out hot-pressing compounding, and is characterized in that the surface modified carbon fiber is obtained by sequentially carrying out high-temperature treatment, electrochemical oxidation, polyisocyanate graft modification and electrochemical deposition of carbon nanotubes. According to the method, the surfaces of the carbon fibers are modified through multiple methods, the multi-scale surface appearance is designed, the contact area of the carbon fibers and the resin base material is increased, the interface bonding force between bonding surfaces is effectively improved, and finally the comprehensive performance of the carbon fiber / phenolic resin composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a modified carbon fiber / phenolic resin composite material and a preparation method thereof. Background technique [0002] Carbon fiber has a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, fatigue resistance, corrosion resistance and good heat transfer performance. It can not only bear loads as a structural material, but also play a role as a functional material. Its excellent specific strength and specific elastic modulus characteristics are widely used in daily life. The products involve transportation, construction engineering and other fields. Among them, carbon fiber / phenolic resin composites have low cost, high temperature resistance, and high specific strength specific modulus. Corrosion resistance and many other advantages are widely used in aerospace, transportation and other field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/06C08L61/10C08K9/04C08K7/06C08K3/04C25D5/54C25D9/04C25D5/00
CPCC08J5/06C25D5/54C25D9/04C25D5/00C08J2361/10C08K3/041C08K2201/011C08K2201/005Y02E60/13
Inventor 苏志强赵鑫张晓媛王敏全皓月
Owner BEIJING UNIV OF CHEM TECH
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