▎ 摘　　要

NOVELTY - Nitrogen-doped graphene/polystyrene-butadiene-styrene composite material comprises. USE - The composite material is useful for high-performance rubber reinforcement. ADVANTAGE - The material: has excellent mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing nitrogen-doped graphene/polystyrene-butadiene-styrene composite material comprising drying graphene oxide, adding grinding aids and nitrogen-containing organic compound, thoroughly mixing the graphene oxide and nitrogen-containing organic compound, increasing the temperature under the protection of an inert atmosphere and/or other atmosphere, and performing the reaction, grinding the obtained solid ground into powder to obtain nitrogen-doped graphene, where the mass ratio of graphene oxide and nitrogen-containing organic compound is 1: 5-1:50, the heating rate is 1-10 degrees C/minutes, reaction temperature is 100-600 degrees C, for 0.5-5 hours.