Preparation method of continuous carbon fiber polyetheretherketone composite material

Abstract

The invention provides a preparation method of a continuous carbon fiber polyetheretherketone composite material. A polyetheretherketone wire material is printed into a latticed plate by a 3D printingtechnology; carbon fibers having the surface treated are coated with polyetheretherketone powder and then is evenly laid on a polyetheretherketone plate; polyetheretherketone and the number of layersof the carbon fibers are increased according to the needs, the laid material is placed in a mould, polyetheretherketone is molten and hot pressing molding is performed. The impregnation effect of thecarbon fibers and the polyetheretherketone matrix is improved, and the interface bonding between the two materials is good. Compared with compression molding, injection molding and extrusion moldingof a carbon fiber reinforced polyetheretherketone composite material, the molding is simple and feasible, the preparation cost is low, the problem of poor impregnation of fibers and a matrix is effectively solved, and defects such as pores and shrinkage do not exist inside the material are solved.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber-reinforced thermoplastic plastic composite materials; in particular, it relates to a preparation method of continuous carbon fiber-reinforced polyetheretherketone composite materials. Background technique [0002] Polyether ether ketone (PEEK) has the characteristics of high strength, high modulus, low density, high temperature resistance, and stable chemical properties, making it an ideal matrix for fiber-reinforced thermoplastic composites, but PEEK itself has good resistance Solvent and high melt viscosity make it usually face the core technical problems of incomplete melt impregnation of polyetheretherketone resin and uneven dispersion of fibers in the molding process of fiber-reinforced polyether ether ketone composites, which to a certain extent impedes its development. [0003] At present, APC-2 prepreg is commonly used to prepare carbon fiber reinforced polyether ether ketone composi...

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Problems solved by technology

[0002] Polyether ether ketone (PEEK) has the characteristics of high strength, high modulus, low density, high temperature resistance, and stable chemical properties, making it an ideal matrix for fiber-reinforced thermoplastic composites, but PEEK itself has good resistance Solvent and high melt viscosity make it usually face the core technical problems of incomplete melt impregnation of polyetheretherketone resin and uneven dispersion of fibers in the molding process of fiber-reinforced polyether ether ketone composites, which to a certain extent impedes its development

[0003] At present, APC-2 prepreg is commonly used to prepare carbon fiber reinforced polyether ether ketone composite materials, but APC-2 prepreg itself is a composite material, which has great limitations in the preparation of complex components, and it is difficult to achieve good Fiber dispersion and impregnation effect; in the paper "Continuous Carbon Fiber / Polyetheretherketone Composites Preparation and Properties Research", the carbon fiber content of CF / PEEK composites prepared by using PESEKK as prepreg was 10%, 12%, 18%, respectively. %, its tensile strength is 143.0MPa, 151.1MPa, 195.3MPa, but PESEKK as a prepreg, the price is expensive, the process is complicated, and the preparation cost is high

[0004] The method of preparing carbon fiber reinforced polyetheretherketone composite material by two-dimensional weaving and mixing technology of carbon fiber and polyetheretherketone fiber, such as the patent application number 201710512623.0, the patent name is carbon fiber reinforced polyetheretherketone composite material and its preparation method Among them, the prepared CF / PEEK composite material has a tensile strength of 200.0MPa when the fiber content is 30%, but the weaving technology is complicated, and polyether ether ketone fibers of the same size as carbon fibers are required, and the preparation cost is high and the process is complicated

[0005] Composite materials prepared by direct hot pressing of carbon fiber and polyether ether ketone also have the problems of serious delamination and poor mechanical properties.

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