▎ 摘　　要

NOVELTY - Preparing highly oriented graphene reinforced bismaleimide resin matrix composite material comprises (i) performing suction of bismaleimide resin into graphene sponge porous structure using negative pressure method and vacuum infusion, using resin-filled graphene sponge as a precursor, crushing the 3D framework of resin-filled graphene by simultaneously stirring and ultrasonication, mixing uniformly with pure bismaleimide resin matrix, (ii) controlling the temperature and viscosity of highly-dispersed graphene reinforced resin-based composite precursor slurry and controlling the force field using cold pressing and (iii) casting the oriented graphene-reinforced resin-based composite material precursor into a mold, performing vacuum defoaming, controlling the temperature and the base force fields and curing to obtain the product. USE - The method is useful in preparing highly oriented graphene reinforced bismaleimide resin matrix composite material. ADVANTAGE - The method: can highly orient graphene in the resin matrix; improves the mechanical properties of the resin matrix; changes the isotropic material into an anisotropic material; expands the application range of composite material; strengthens the competitive advantage; and provides a new type of directional preparation for nanofilling. DETAILED DESCRIPTION - Preparing highly oriented graphene reinforced bismaleimide resin matrix composite material comprises (i) performing suction of bismaleimide resin into graphene sponge porous structure using negative pressure method and vacuum infusion, using resin-filled graphene sponge as a precursor, crushing the three-dimensional framework of the resin-filled graphene by simultaneously stirring and ultrasonication, mixing uniformly with pure bismaleimide resin matrix to obtain highly-dispersed graphene reinforced resin-based composite precursor slurry, (ii) controlling the temperature of graphene reinforced resin-based composite precursor slurry to less than or equal to 0 degrees C and viscosity to 1-10 Pax seconds and controlling the force field at particular viscosity using cold pressing to obtain an oriented graphene-reinforced resin-based composite material precursor and (iii) casting the oriented graphene-reinforced resin-based composite material precursor into a mold, performing vacuum defoaming, controlling the temperature and the base force fields to satisfy the curing requirements and curing to obtain oriented graphene-reinforced resin-based composite material.