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Preparation method of chopped carbon fiber interlayer reinforced fiber composite material

A fiber composite material and chopped carbon fiber technology, applied in the field of materials, can solve the problems of complex process and high cost of recycling carbon fiber composite materials, and achieve the effect of simple process, improved mechanical properties and easy molding

Active Publication Date: 2017-05-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of high recycling cost and complex process of existing carbon fiber composite materials, and provides a method for preparing chopped carbon fiber interlayer reinforced fiber composite materials with low cost and simple process

Method used

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  • Preparation method of chopped carbon fiber interlayer reinforced fiber composite material
  • Preparation method of chopped carbon fiber interlayer reinforced fiber composite material
  • Preparation method of chopped carbon fiber interlayer reinforced fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Chopped carbon fibers, cellulose nanofibers, deionized water, bisphenol A water-based epoxy resin with CF:NFC:H 2 O:WEP=2:1:200:20 mass ratio is put into the device for mechanical stirring, with a speed of 1000r / min, react for 15min to obtain a dispersed aqueous solution of chopped carbon fiber; pour the aqueous solution of chopped carbon fiber into the mold , and then dried in a blast oven at 100°C to obtain an interlayer reinforced and toughened chopped carbon fiber film; the interlayer reinforced and toughened chopped carbon fiber film is placed in a layer of natural jute fiber cloth, which can be placed 1 layer of interlayer reinforced and toughened chopped carbon fiber film, and then resin transfer molding method, using epoxy resin + amine curing agent system for prepreg, to obtain prepreg fiber cloth; the obtained prepreg fiber cloth is used The method of compression molding is cured and formed according to the selected epoxy resin + amine curing agent system, and...

Embodiment 2

[0018] Chopped carbon fibers, cellulose nanofibers, deionized water, bisphenol A water-based epoxy resin with CF:NFC:H 2 O:WEP=0.1:1:200:0 mass ratio is put into the device for mechanical stirring, at a speed of 800r / min, react for 10min to obtain a dispersed aqueous solution of chopped carbon fiber; pour the aqueous solution of chopped carbon fiber into the mold , and then dried in a blast oven at 80°C to obtain an interlayer reinforced and toughened chopped carbon fiber film; the interlayer reinforced and toughened chopped carbon fiber film is placed in a layer of natural jute fiber cloth, which can be placed 1 layer of interlayer reinforced and toughened chopped carbon fiber film, and then resin transfer molding method, using epoxy resin + amine curing agent system for prepreg, to obtain prepreg fiber cloth; the obtained prepreg fiber cloth is used The method of compression molding is cured and formed according to the selected epoxy resin + amine curing agent system, and th...

Embodiment 3

[0020] Chopped carbon fibers, cellulose nanofibers, deionized water, bisphenol A water-based epoxy resin with CF:NFC:H 2 O: WEP = 3:1:200:30 mass ratio into the device for mechanical stirring, at a speed of 1500r / min, react for 30min to obtain a dispersed aqueous solution of chopped carbon fiber; pour the aqueous solution of chopped carbon fiber into the mold , and then dried in a blast oven at 100°C to obtain an interlayer reinforced and toughened chopped carbon fiber film; the interlayer reinforced and toughened chopped carbon fiber film is placed in a layer of natural jute fiber cloth, which can be placed 1 layer of interlayer reinforced and toughened chopped carbon fiber film, and then resin transfer molding method, using epoxy resin + amine curing agent system for prepreg, to obtain prepreg fiber cloth; the obtained prepreg fiber cloth is used The method of compression molding is cured and formed according to the selected epoxy resin + amine curing agent system, and the c...

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PUM

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Abstract

The invention relates to a preparation method for a short carbon fiber interlayer-reinforced fiber composite material, and solves the technical problems that a conventional carbon fiber composite material is high in recycling cost and complex in process. The preparation method comprises the following steps: mixing short carbon fiber, cellulose nanofiber, deionized water and water-based epoxy resin, and stirring to obtain a short carbon fiber water solution; pouring the solution into a mold, drying in a fan oven to obtain a short carbon fiber film for interlayer reinforcement; spreading the short carbon fiber film in the middle of natural fiber cloth or glass fiber cloth, and adopting a resin transfer molding method to obtain prepreg fiber cloth; performing lay-up design on the prepreg fiber cloth and curing forming to obtain the short carbon fiber interlayer-reinforced fiber composite material. The preparation method can be applied to recycling and reuse of carbon fiber composite materials.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing a chopped carbon fiber interlayer reinforced fiber composite material. Background technique [0002] At present, the application of carbon fiber composite materials is more and more extensive, and the recycling and reuse of carbon fiber composite materials has become an urgent problem faced by our country and even the world. After carbon fiber composite materials are recycled, chopped carbon fibers will be obtained. Exploring new ways to recycle chopped carbon fibers is an important direction of research on the recycling and reuse of carbon fiber composite materials. The application of natural fibers in the field of structural and semi-structural composites is limited due to their low mechanical properties. The use of chopped carbon fibers and cellulose nanofibers to synergistically reinforce natural fiber composites can not only reuse recycled chopped strands, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L67/06C08L61/06C08L1/02C08L97/02C08K7/06C08K7/14C08J5/04B29C70/34B29C39/02
Inventor 于运花李菁萱邓泉杨小平
Owner BEIJING UNIV OF CHEM TECH
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