▎ 摘　　要

NOVELTY - Preparing graphene-reinforced carbon fiber composite material comprises (i) preparing graphene reinforced resin matrix composite precursor comprising using negative pressure method, and absorbing pure resin matrix into porous structure of graphene sponge by vacuum method, (ii) using graphene sponge pre-filled with resin as precursor, crushing three-dimensional framework of graphene filled with resin by stirring ultrasonic auxiliary method while uniformly mixing with pure resin matrix, and obtaining high dispersion graphene reinforced resin matrix composite precursor slurry, (iii) preparing graphene/carbon fiber reinforced resin matrix composites comprising mixing graphene reinforced resin-based composite precursor slurry with a curing agent until the final curing agent and graphene reinforced resin-based composite precursor slurry are uniformly mixed, conditioning carbon fiber according to specified environmental conditions, and continuously winding resin-impregnated fiber on core. USE - The method is useful for preparing graphene-reinforced carbon fiber composite material. ADVANTAGE - The method: solves the problem of combining graphene with carbon fiber compared to prior art; improves the mechanical properties of fiber composite material; and increases competitive advantage of composite materials in the application field. DETAILED DESCRIPTION - Preparing graphene-reinforced carbon fiber composite material comprises (i) preparing graphene reinforced resin matrix composite precursor comprising using negative pressure method, and absorbing pure resin matrix into porous structure of graphene sponge by vacuum method, (ii) using graphene sponge pre-filled with resin as precursor, crushing three-dimensional framework of graphene filled with resin by stirring ultrasonic auxiliary method while uniformly mixing with pure resin matrix, and obtaining high dispersion graphene reinforced resin matrix composite precursor slurry, (iii) preparing graphene/carbon fiber reinforced resin matrix composites comprising mixing graphene reinforced resin-based composite precursor slurry with a curing agent until the final curing agent and graphene reinforced resin-based composite precursor slurry are uniformly mixed, conditioning the carbon fiber according to specified environmental conditions, continuously winding the resin-impregnated fiber on core to required number of layers, gradient curing, and mold pressing to obtain the finished product.