Forming method of thermoplastic continuous fiber-reinforced composite material piece

Abstract

The invention discloses a forming method of a thermoplastic continuous fiber-reinforced composite material piece. The forming method comprises the steps that (1) thermoplastic continuous fiber prepregtape is subjected to overlaying and mould pressing, and an organic composite plate is obtained; (2) the organic composite plate obtained in the step (1) is subjected to two-dimensional cutting, and a2D organic plate is obtained; (3) the 2D organic plate obtained in the step (2) is heated, softened and then moved into a forming mould; and (4) mould assembling and micro-foam injection molding areconducted, and after cooling and mould opening, the thermoplastic continuous fiber-reinforced composite material piece is obtained. According to the forming method, the thermoplastic continuous fibercomposite material and the micro-foam injection molding material are combined, integrated forming is achieved through mould pressing-injection moulding, materials, moulds and the forming technique arecooperated, and the prepared composite material piece is smooth and even in surface, free of reduction and low in warping angle and is suitable for subsequent spraying and coating. The product rigidity is high, the weight is low, and the piece is suitable for preparation of television and computer shells as well as automobile accessory light-weight outer parts.

Description

technical field

[0001] The invention relates to the technical field of polymer composite materials and molding, in particular to a molding method of thermoplastic continuous fiber reinforced composite material parts. Background technique

[0002] With the continuous development of industrial manufacturing technology and plastic modification technology, plastic instead of steel has formed a trend in automobile manufacturing, mobile office and home furnishing industries. Many traditional metal parts are gradually replaced by high-performance plastics, but Due to the limited strength of general-purpose modified engineering plastics, it is more difficult to replace metal parts with higher structural strength requirements. The composite material is mainly made of continuous fibers, and the polymer resin plays the role of impregnation and bonding. The strength of the composite material can reach the level of high-strength fibers contained in it. In recent years, it has been applie...