Short carbon fiber reinforced phenol formaldehyde resin-based composite material and preparation method thereof

A technology of chopped carbon fiber and phenolic resin, which is applied in the field of chopped carbon fiber reinforced phenolic resin-based composite materials and its preparation, can solve the problems of large batch differences in product performance and difficulty in taking into account the uniformity of chopped carbon fiber distribution, and achieve simple operation , Each process is accurate and controllable, and the effect of high efficiency

Active Publication Date: 2019-01-22
ZHEJIANG ASIA PACIFIC MECHANICAL & ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems raised in the above-mentioned background technology, the object of the present invention is to provide a chopped carbon fiber reinforced phenolic resin-based composite material and its preparation method, which solves the problem that the chopped carbon fiber reinforced phenolic resin-based composite material prepared by the existing method is difficult to take into account the short The uniformity of the distribution of cut carbon fibers, the good permeability and crack resistance of the carbon-carbon porous body obtained after carbonization to liquid silicon, and the problem of large batch differences in product performance

Method used

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  • Short carbon fiber reinforced phenol formaldehyde resin-based composite material and preparation method thereof
  • Short carbon fiber reinforced phenol formaldehyde resin-based composite material and preparation method thereof
  • Short carbon fiber reinforced phenol formaldehyde resin-based composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0059] Step 1: Take 3k continuous carbon fiber bundles and heat-treat them in an argon atmosphere furnace at 900°C to remove surface metal ions and impurities, then clean them with acetone and deionized water as cleaning agents until the surface is free of glue, and finally wash the The continuous carbon fiber bundle is placed in an oven for drying, and wound to obtain a pretreated continuous carbon fiber bundle;

[0060] Step 2: Pass the pretreated continuous carbon fiber bundle obtained in step 1 through the equipment for preparing chopped carbon fiber bundles with a surface coated with a phenolic resin layer to prepare chopped carbon fiber bundles with a surface coated with a phenolic resin layer, and the phenolic resin layer completely covers the short carbon fiber bundles. The carbon fiber is cut and in a semi-cured state, the thickness is 0.5mm, and the length of the chopped carbon fiber bundle covered with the resin layer is 5mm;

[0061] Step 3: Proportionally weigh th...

Embodiment 2

[0072] Step 1: Take 24k continuous carbon fiber bundles and heat-treat them in an argon atmosphere furnace at 1600°C to remove surface metal ions and impurities, then clean them with acetone and deionized water as cleaning agents until the surface is free of glue, and finally clean the The continuous carbon fiber bundle is placed in an oven and dried to obtain a pretreated continuous carbon fiber bundle;

[0073]Step 2: Pass the pretreated continuous carbon fiber bundles through the equipment for preparing chopped carbon fiber bundles coated with a phenolic resin layer to obtain chopped carbon fiber bundles covered with a phenolic resin layer, and the ends of the chopped carbon fibers are not coated with phenolic resin layer, the resin layer is in a fully cured state, the thickness is 2mm, and the length of the chopped carbon fiber bundles covering the resin layer is 30mm;

[0074] Step 3: Proportionally weigh the chopped carbon fiber bundles and phenolic resin powder obtained...

Embodiment 3

[0085] Step 1: Take 6k continuous carbon fiber bundles and heat-treat them in an argon atmosphere furnace at 1300°C to remove metal ions and impurities on the surface, then use acetone and deionized water as cleaning agents to clean them until there is no glue on the surface, and finally clean them The continuous carbon fiber bundle is placed in an oven and dried to obtain a pretreated continuous carbon fiber bundle;

[0086] Step 2: passing the pretreated continuous carbon fiber bundles through the equipment for preparing chopped carbon fiber bundles coated with phenolic resin layers on the surface to produce 3 kinds of chopped carbon fiber bundles coated with phenolic resin layers on the surface,

[0087] a The two ends of the chopped carbon fiber are not covered with the phenolic resin layer and are in a semi-cured state, the thickness of the resin layer is 1 mm, and the length of the chopped carbon fiber bundle covered with the resin layer is 20 mm;

[0088] b One end of t...

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Abstract

The invention discloses a short carbon fiber reinforced phenol formaldehyde resin-based composite material and a preparation method thereof. The preparation method comprises: carrying out high-temperature heat treatment on a continuous carbon fiber bundle to remove surface metal ions and impurities, washing until the surface is free of glue, and drying to obtain a pre-treated continuous carbon fiber bundle; preparing a short carbon fiber bundle coated with a phenol formaldehyde resin layer on the surface from the pre-treated continuous carbon fiber bundle by using equipment for preparing a short carbon fiber bundle coated with a phenol formaldehyde resin layer on the surface; mixing the short carbon fiber bundle coated with the phenol formaldehyde resin layer on the surface and phenol formaldehyde resin powder according to a certain ratio to obtain a mixture; pre-treating the mixture, and carrying out cold pressing pre-molding to prepare a pre-molded plate material; and loading the pre-molded plate material in a hot pressing mold, carrying out curing molding, and carrying out post-treatment to obtain the short carbon fiber reinforced phenol formaldehyde resin-based composite material.

Description

technical field [0001] The invention relates to a carbon fiber composite material and a preparation method, in particular to a chopped carbon fiber reinforced phenolic resin-based composite material and a preparation method thereof. Background technique [0002] Carbon-ceramic composite material has the characteristics of light weight, high temperature resistance, corrosion resistance and wear resistance. It is a new type of high-performance braking material and has broad application prospects in high-speed trains, aircraft, automobiles and other fields. Carbon fiber-reinforced resin-based composites are the basis for preparing carbon-ceramic composites. Whether their structure and performance meet the requirements determines the performance of the final carbon-ceramic composite. Carbon fibers in carbon fiber reinforced phenolic resin-based composites currently used to prepare carbon-ceramic composites can be divided into two types: carbon fiber needle-punched integral mats ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/06C08L61/06C08K9/10C08K7/06
CPCC08J5/06C08J2361/06C08K7/06C08K9/10
Inventor 杨鹏翱施正堂
Owner ZHEJIANG ASIA PACIFIC MECHANICAL & ELECTRONICS
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