3D printing method of continuous fiber self-enhancement composite material

Abstract

The invention discloses a 3D printing method of continuous fiber self-enhancement composite material. The 3D printing method comprises the following steps: at first, establishing a three-dimensional model of a self-enhancement composite material workpiece, and deriving the three-dimensional model as an stl formatted file; determining a printing temperature interval, wherein the self-enhancement composite material is thermoplastic high polymer material with different physical forms and is provided with a reinforced phase and a matrix base, the reinforced phase and the matrix base have the samechemical construction and different melting points, the reinforced phase is continuous fiber, and the matrix phase is resin; the printing temperature scope is higher than the melting point of the matrix phase and is lower than the melting point of the reinforced phase; preparing the self-enhancement composite material through 3D printing, finally, recycling the self-enhancement composite material,physically crushing the self-enhancement composite material, heating the crushed self-enhancement composite material to above the melting point to completely melt the self-enhancement composite material, and recycling the self-enhancement composite material as the raw material. On one hand, the 3D printing method solves the problems that the interfacial properties are poor and recycling is difficult when 3D printing is carried out on the composite material, and on the other hand, low-cost rapid manufacturing of the continuous fiber self-enhancement composite material is realized.

Description

technical field [0001] The invention relates to the technical field of 3D printing of continuous fiber reinforced composite materials, in particular to a method for 3D printing continuous fiber self-reinforced composite materials. Background technique [0002] Continuous fiber reinforced composite material 3D printing technology is an emerging composite material processing technology. It uses the principle of 3D printing layer by layer to combine matrix material and continuous fiber to form composite parts. This process does not need to prepare molds and prepreg tapes in advance. , reduce cost and process complexity, can precisely control the direction of reinforcing fibers, obtain composite parts with customized properties, and realize rapid manufacturing of composite parts with complex structures. However, this process molding technology itself still has some inherent defects, such as insufficient pressure in the impregnation chamber of the fiber and the matrix during the ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a method for 3D printing continuous fiber self-reinforced composite materials, which solves the problems of poor interface performance and difficult recycling of 3D printing composite materials on the one hand, and realizes continuous self-reinforcement on the other hand. Low-cost and rapid manufacturing of fiber self-reinforced composites

Images