Method for improving interface performance of resin matrix and carbon fibers

Abstract

The invention discloses a method for improving the interface performance of a resin matrix and carbon fibers, and belongs to the field of composite materials. Graphene oxide is adopted to modify the surface interface of the carbon fibers, so that a carbon fiber reinforced resin matrix composite material with high interface shear strength and interlayer shear strength is obtained. The carbon fiber reinforced resin-based composite material is prepared from graphene oxide modified carbon fibers, a resin matrix and a curing agent as raw materials, and the graphene oxide modified carbon fibers are obtained from graphene oxide modified carbon fibers with the transverse size of 50-50000 nm. The method has outstanding advantages in the aspect of enhancing the interface performance of the carbon fiber composite material, can meet the high-temperature forming requirement of high-heat-resistance resin, and has important application prospects in preparation of various high-performance resin-based composite materials. The graphene oxide modified carbon fiber reinforced resin matrix composite material is excellent in interlaminar shear performance and can be applied to the fields of aerospace, rail transit, automobiles, energy sources, ships and the like.

Description

technical field

[0001] The invention belongs to the field of composite materials, and in particular relates to a method for improving the interface properties of a resin matrix and carbon fibers, and a carbon fiber reinforced resin-based composite material with high interfacial shear strength and interlayer shear strength obtained by using the method. Background technique

[0002] Carbon fiber reinforced resin matrix composites (CFRPs) have been widely used in aerospace, automotive and marine industries due to their light weight, high specific strength, high specific modulus, good corrosion resistance, strong designability, and easy processing. Widespread concern. The resin matrix used in carbon fiber reinforced resin matrix composites is divided into two categories: thermosetting resins and thermoplastic resins. At present, thermosetting resins are mainly used. Among thermosetting resins, epoxy resin has the advantages of excellent bonding performance, good dimensional sta...

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