▎ 摘　　要

NOVELTY - The method involves treating the surface of the copper foil, polishing the surface of the copper foil with a polisher or sandpaper, removing the oxide layer and stains, and polishing the burrs on each surface of the blank to ensure smoothness. A certain content of graphene powder is weighed, and an appropriate amount of dispersant is taken according to a certain proportion. The graphene and dispersing agent are added to the beaker prepared in advance, and an appropriate amount of anhydrous ethanol is added to dissolve. The straightened plate is put into a heat treatment furnace to set a certain temperature and time for annealing treatment. The composite plate after heat treatment is ground, stretched and leveled to obtain a sample with a smooth and tidy surface. The electrical and thermal conductivity, tensile properties and other tests are conducted on the rolled clad sheet and the heat-treated clad sheet, and the microstructures are compared and observed. USE - Method for preparing high-strength and high-conductivity copper/graphene composite material. ADVANTAGE - The method makes the graphene better contact with the new metal through multi-pass cumulative rolling, effectively eliminates oxygen at the bonding interface and obtains a higher interface bonding rate. The problem that the strength of the graphene-reinforced metal matrix composite material is prepared by a powder metallurgy process is greatly reduced and the electrical conductivity and thermal conductivity are increased. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the process flow of the method for preparing high-strength and high-conductivity copper/graphene composite material. (Drawing includes non-English language text)