▎ 摘　　要

NOVELTY - The preparation method of benzoxazine/epoxy resin/graphene oxide composite material involves: (1) dissolving graphene oxide in solvent to prepare graphene oxide solution; (2) adding epoxy resin to graphene oxide solution obtained in step (1), and stirring to evenly disperse to obtain epoxy resin and graphene oxide mixture; and (3) adding epoxy resin and graphene oxide mixture obtained in step (2) to benzoxazine intermediate and stirring to evenly disperse to obtain benzoxazine/epoxy resin/graphene oxide mixture. USE - The method is useful for preparing benzoxazine/epoxy resin/graphene oxide composite material (claimed). ADVANTAGE - The method prepares benzoxazine/epoxy resin/graphene oxide composite material with excellent flexibility. DETAILED DESCRIPTION - The preparation method of benzoxazine/epoxy resin/graphene oxide composite material involves: (1) dissolving graphene oxide in solvent to prepare graphene oxide solution; (2) adding epoxy resin to graphene oxide solution obtained in step (1), and stirring to evenly disperse to obtain epoxy resin and graphene oxide mixture; (3) adding epoxy resin and graphene oxide mixture obtained in step (2) to benzoxazine intermediate and stirring to evenly disperse to obtain benzoxazine/epoxy resin/graphene oxide mixture; and (4) drying benzoxazine/epoxy resin/graphene oxide mixture obtained in step (3).