Carbon fiber sheet

Abstract

The invention discloses a carbon fiber sheet, comprising no more than six layers of carbon fiber prepreg and no more than two layers of glass bead-filled epoxy sheet laminate, the glass bead-filled epoxy sheet laminate It is arranged at the middle layer position of several carbon fiber prepregs, and a layer of carbon fiber woven cloth prepreg is added between the carbon fiber prepregs and carbon fiber prepregs, carbon fiber prepregs and glass bead-filled epoxy sheet laminates . The carbon fiber sheet prepared by the invention has flame retardancy, low degree of deformation, light weight, and is easy to produce in batches, and is especially suitable for light-weight application of electronic products.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a carbon fiber sheet. Background technique [0002] With the development of electronic lightweighting, traditional aluminum-magnesium alloy materials cannot meet the requirements. For example, notebook computers have dropped from traditional products to less than 1 kg, and Ipads have to develop from 900 grams to 700 grams or even 500 grams. are becoming stronger and stronger, so there is an urgent need for new materials to solve them. Carbon fiber composite materials have the advantages of light weight, high strength, low thermal expansion coefficient, and corrosion resistance. They can solve the problem of lightweight and miniaturized equipment, especially the diversified development of carbon fiber products, which has attracted widespread attention. There have also been attempts to use carbon fiber composites as housings for electronic products. For example, CN103...

AI Technical Summary

Problems solved by technology

Lenovo also utilizes thermoplastic materials, although its protruding sandwich layer structure solves the deformation caused by the lagging material intruding into the sheet, but there is still the problem of adhesion

In addition, because the outer layer is a thermosetting material such as epoxy resin, and the sandwich layer is a thermoplastic material, the expansion coefficients of the two are different. When heating or cooling, inconsistent expansion or contraction will occur, resulting in deformation.

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