Tool prepreg for composite material mold, preparation method, application method and application

A composite material and application method technology, applied in the field of tooling prepreg of composite material mold, can solve the problems of complex curing process, high curing temperature, slow progress, etc., and achieve the effect of simplifying curing process, low specific gravity and good viscosity
CN112409760APending Publication Date: 2021-02-26WEIHAI GUANGWEI COMPOSITES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WEIHAI GUANGWEI COMPOSITES
Publication Date
2021-02-26

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Abstract

The invention discloses a tool prepreg for a composite material mold, a preparation method, an application method and application. The prepreg comprises a fiber material and a resin material, the resin material comprises a component A accounting for 95%-99% of the total mass of resin and the balance of a component B, the component A is matrix resin, and the viscosity at the temperature of 50 DEG Cis 10-30 Pa.s; the component B is a curing agent, and the viscosity at the temperature of 25 DEG C is 0.1-0.5 Pa.s; in addition, the resin material satisfies the following conditions: the viscosity at 50 DEG C is 10-30 Pa.s, and the gelation time at 120 DEG C is 7-10 min. The prepreg provided by the scheme of the invention is good in viscosity and good in manufacturability; the composite materialcan be pre-cured under the low-temperature condition of room temperature to 60 DEG C, and the glass-transition temperature (DMA) of the post-cured composite material is greater than 200 DEG C; and the composite material has excellent dimensional stability.
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Description

technical field

[0001] The invention belongs to the technical field of prepreg composite materials, and in particular relates to a tooling prepreg used for composite material moulds, a preparation method, an application method and application. Background technique

[0002] At present, the mold materials suitable for molding composite parts mainly include: traditional metal materials (such as steel, aluminum, etc.), new metal materials Invar, and fiber-reinforced composite materials. Traditional metal materials have the advantages of low material price, relatively simple processing, and long service life, and are widely used. However, their long manufacturing cycle, heavy weight, and high difficulty in manufacturing complex profiles are not conducive to the production of small batch products, especially metal molds. It does not match the thermal expansion coefficient of composite parts, which makes it difficult to improve the manufacturing accuracy of parts. Although the the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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