Preparing device and method of thermoplastic resin matrix prepreg reinforced by continuous carbon fibers

Abstract

The invention discloses preparing device and method of a thermoplastic resin matrix prepreg reinforced by continuous carbon fibers and belongs to the field of composites. Left and right wedge-shaped swaying blocks are separately matched with first left and right elastic tension rollers so as to realize the bundle loosening, splitting and tensioning of the carbon fibers. Through a rapid pressing function which is performed after the left and right wedge-shaped swaying blocks are separately in contact with second left and right elastic tension rollers, tensioned carbon fiber bundles carry out rapid vertical downward cutting on a fused matrix resin film and are buried in the fused matrix resin film, and the embedding and burying of the carbon fiber bundles in the thermoplastic matrix resin are realized. Then, through the following secondary compaction of compression rollers, a thermoplastic pregreg tape with one-directional continuous carbon fibers is prepared. Through secondary spinning or weaving, various kinds of prepreg cloth or fabric reinforced by one-directional, two-directional, diagonal and three-directional continuous carbon fibers are prepared. The problems that the thermoplastic resin matrix has large viscosity and is poor at permeating and infiltrating the carbon fiber bundles, and the content of the resin is hard to precisely control are solved. The preparing device and method are also suitable for the preparation of thermosetting carbon fiber prepreg tapes.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a preparation technology of a continuous carbon fiber reinforced thermoplastic resin-based prepreg, and is particularly suitable for the preparation of a thermoplastic resin-based composite material prepreg with high melt viscosity and poor permeability to continuous carbon fiber cloth or fabric. Background technique [0002] As one of the important means of automobile lightweight, thermosetting carbon fiber composite components have high raw material cost, short shelf life, harsh transportation and storage conditions, long production cycle, high process cost, prone to brittle failure, difficult maintenance and repair, and material reuse rate. Low energy consumption and high energy consumption for recycling and scrapping make it difficult to meet the requirements of mass production. For this reason, the automotive industry has put forward an urgent demand for the use of continuou...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a continuous carbon fiber reinforced thermoplastic resin matrix prepreg preparation device and method to solve the problem of high viscosity thermoplastic resin difficult to impregnate continuous carbon fiber bundles in the existing continuous carbon fiber reinforced thermoplastic resin matrix prepreg preparation technology A uniform and effective bond is formed inside, which leads to the problems of poor mechanical properties and low load-carrying capacity of the produced carbon fiber composite components

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