▎ 摘　　要

NOVELTY - A graphene/cyanate ester/bimaleimide composite material comprises 0.1-10 parts mass graphene oxide-modified hyperbranched polysiloxane (I), 5-100 parts mass bismaleimide prepolymer containing bisphenol A diallyl ether and 100 parts mass bisphenol A type cyanate resin. The bisphenol A type cyanate resin is (4-(2-(4-(cyanooxy)phenyl)propan-2-yl)phenyl) cyanate resin. USE - Graphene/cyanate ester/bimaleimide composite material. DETAILED DESCRIPTION - A graphene/cyanate ester/bimaleimide composite material comprises 0.1-10 parts mass graphene oxide-modified hyperbranched polysiloxane, 5-100 parts mass bismaleimide prepolymer containing bisphenol A diallyl ether and 100 parts mass bisphenol A type cyanate resin. The graphene oxide-modified hyperbranched polysiloxane is of formula (I). The bisphenol A type cyanate resin is (4-(2-(4-(cyanooxy)phenyl)propan-2-yl)phenyl) cyanate resin. R=group of formula (a). An INDEPENDENT CLAIM is included for manufacture of graphene/cyanate ester/bimaleimide composite material, which involves adding 0.1-10 parts graphene oxide into 1-100 parts of tetrahydrofuran solution of KH-560, carrying out ultrasonic dispersion for 0.5 hour, dripping 1 ml/L of hydrogen chloride aqueous solution with concentration of 1-50 mL, stirring at 50-80 degrees C for 4-7 hours, obtaining graphene oxide-modified hyperbranched polysiloxane, heating 100 parts diphenylmethane bismaleimide and 10-100 parts bisphenol A diallyl ether as reactive diluent, melting and prepolymerizing for 0.5-3 hours to obtain bismaleimide resin prepolymer, adding 0.1-10 parts graphene oxide-modified hyperbranched polysiloxane into 10-80 parts bismaleimide resin prepolymer, carrying out ultrasonic dispersion for 0.5-1 hour at 40-60 degrees C, adding 100 parts cyanate ester resin melted at 80 degrees C, stirring and warming, prepolymerizing for 0.5-2 hours at 100-140 degrees C, pouring into a mold, vacuumizing and removing bubble in a vacuum oven at 140 degrees C, adding product into an air dry oven, naturally cooling, demolding, and processing for 2 hours at 220 degrees C.