Surface modified carbon fiber prepreg based on graphene oxide and preparation method of carbon fiber prepreg

Abstract

The invention discloses a surface modified carbon fiber prepreg based on graphene oxide and a preparation method of the carbon fiber prepreg and relates to preparation of the carbon fiber prepreg. Thesurface modified carbon fiber prepreg based on graphene oxide is prepared from, in parts by mass, 100 parts of carbon fiber and a prepreg solution containing 40%-60% of resin, wherein the prepreg solution is prepared from, in parts by mass, 100 parts of epoxy resin, 50-150 parts of acetone and 0.05-5 parts of graphene oxide. Graphene oxide is uniformly dispersed in an epoxy resin prepreg solution, carbon fiber is soaked in the epoxy resin prepreg solution containing graphene oxide, and a graphene oxide / epoxy resin infiltration layer is formed on the surface of the carbon fiber, the purpose ofimproving the interface performance of the carbon fiber and an epoxy resin matrix is achieved, and a graphene oxide / carbon fiber / epoxy resin prepreg and a composite product thereof are obtained and are convenient to operate, require simple equipment and are suitable for industrial production.

Description

technical field [0001] The invention relates to the preparation of a carbon fiber prepreg, in particular to a graphene oxide-based surface-modified carbon fiber prepreg and a preparation method thereof. Background technique [0002] Carbon fiber reinforced resin matrix composites are widely used in the fields of aerospace, automobiles and sports equipment due to their advantages such as high specific strength, designability of performance, good structural and dimensional stability, and ease of large-area integral molding. Carbon fiber prepreg refers to the product obtained by impregnating the resin matrix with carbon fiber or its fabric under certain conditions. It is a semi-finished product of fiber reinforced composite material that can be stored. It has the advantages of easy use, stable performance, low porosity, and clean process. Applications in composite materials are becoming more and more common. [0003] However, due to the structure of carbon fiber itself, the su...

AI Technical Summary

Problems solved by technology

However, due to the irregular structure of graphene and low surface activity, it is usually necessary to chemically modify the surface of graphene in the modification process of carbon fiber / resin-based prepregs and composite materials to increase its surface active groups. Bonding between graphene and resin matrix, carbon fiber

Patent [Zhao Donglin et al., China Patent of Invention, application number 201610339876.8] grafting -NH2 on the surface or edge of graphene, patent [Zhao Donglin et al., China Patent of Invention, application number 201610339807.7] and [Zhao Yang et al., China Invention Patent, application number 201710031321.1 ] Not only to chemically modify graphene, but also to form a binary reinforcement material with carbon nanotubes, which undoubtedly increases the difficulty and cost of the process, and the use of carbon nanotubes can easily cause agglomeration and affect the performance of the material

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