▎ 摘　　要

NOVELTY - In-situ polymerization to prepare ultra-high molecular weight polyethylene/graphene composite material comprises heat processing graphene at 110-300 degrees C; dispersing in an inert hydrocarbon solvent, then adding transition metal compound, controlling the reaction temperature at 10-200 degrees C, filtering and drying obtained solid product at 60 degrees C, and obtaining solid catalyst; adding an inert hydrocarbon diluent in a container, and adding the solid catalyst and organic aluminum compound; introducing ethylene gas, reacting to obtain polymerization product; and drying to obtain the composite material. USE - In-situ polymerization method to prepare ultra-high molecular weight polyethylene/graphene composite material. ADVANTAGE - Graphene in the composite material is uniformly dispersed, so that the composite material has excellent performance and high impact resistance. Problems that the traditional composite material is subjected to brittle rupture and is ineffective in long-term use process are solved. DETAILED DESCRIPTION - In-situ polymerization method to prepare ultra-high molecular weight polyethylene/graphene composite material comprises: (A) heat processing graphene for 1.0-10.0 hours at 110-300 degrees C in the presence of air or inert gas; (B) dispersing the graphene in an inert hydrocarbon solvent, then adding transition metal compound, controlling the reaction temperature at 10-200 degrees C, reacting for 0.5-6.0 hours, filtering and collecting solid product, drying obtained solid product in nitrogen gas at 60 degrees C, and obtaining solid catalyst; (C) pumping container with nitrogen gas and replacing three times, then using ethylene, then adding an inert hydrocarbon diluent in the container, and adding the obtained solid catalyst and organic aluminum compound, mixing and stirring; (D) introducing ethylene gas at 0.01-1.0 MPa, controlling the reaction temperature at 20-150 degrees C, reacting for -2-10 hours to obtain polymerization product; and (E) putting the polymerization product in a drying box to obtain the gray white powder-shaped composite material.