Preparation device and method for continuous carbon fiber reinforced thermoplastic resin base prepreg sheet

Abstract

The invention discloses a preparation device and method for a continuous carbon fiber reinforced thermoplastic resin base prepreg sheet. Through the cooperation of a fiber bundle filament passing unitand a carbon fiber bundle pulling roller, a carbon fiber bundle is passed into a fiber bundle embedding, cutting and splicing unit so as to be clamped; a splitting roller, a filament combing device and a second-level splitting plate in a fiber bundle splitting and tensioning unit are used for splitting the tensioned carbon fiber bundle; an annular guide rail in the fiber bundle embedding, cuttingand splicing unit drives a clip clamping the carbon fiber bundle to press downwards, and the tensioned carbon fiber bundle perpendicularly and downwards cut a molten-state resin flake and is embeddedinside, so that the carbon fiber bundle is embedded into a thermoplastic resin base and is cut off; and through the cyclic process, the continuous carbon fiber reinforced thermoplastic resin base prepreg sheet is prepared, and the problems that during the preparation process of the continuous carbon fiber reinforced thermoplastic resin base prepreg sheet, the viscosity of the resin base is high,the carbon fiber bundle is difficult to impregnate sufficiently, and the fiber content is hard to accurately control are solved.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a continuous carbon fiber-reinforced thermoplastic resin-based prepreg sheet preparation device and method, and is particularly suitable for the preparation of continuous fiber-reinforced thermoplastic fiber prepregs with high melting temperature and high viscosity. Background technique [0002] Continuous carbon fiber reinforced thermoplastic resin composites have a wide range of application requirements in aerospace, automotive and other fields. Their outstanding advantages mainly include: excellent mechanical properties (high toughness, high rigidity, high strength, high fatigue resistance, etc.), high durability Abrasion resistance, non-absorbent, anti-aging, anti-corrosion, etc. However, for prepregs of thermoplastic resin-based carbon fiber composites with high melt viscosity, the existing methods have problems such as poor resin infiltration effect on fibers, difficulty in...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a continuous carbon fiber reinforced thermoplastic resin-based prepreg preparation device to solve the problem that the high-viscosity thermoplastic resin is difficult to uniformly impregnate the continuous carbon fiber in the existing continuous carbon fiber reinforced thermoplastic resin-based prepreg preparation technology, resulting in the The mechanical properties of the prepared carbon fiber composite materials are unstable and the bearing capacity is low

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