▎ 摘　　要

NOVELTY - Copper-loaded graphene-reinforced copper-based composite material comprises 97-99.9 wt.% copper, 0.1-3 wt.% copper-loaded graphene, and, the mass ratio of copper in the copper-loaded graphene is 24.02-28.22%. USE - Used as copper-loaded graphene-reinforced copper-based composite material. ADVANTAGE - The method: can make copper particles into the graphene sheet, effectively solves the problem of agglomeration of graphene, and the graphene can be uniformly dispersed on the metal base to obtain the comprehensive performance of the graphene-reinforced copper base block composite material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of the copper-loaded graphene-reinforced copper-based composite material comprising (i) weighing materials: 15-30 wt.% graphene oxide, 70-85 wt.% copper nitrate, and the sum of the above components mass percentage is 100%; (2) adding the graphene oxide to deionized water, stirring for 30 minutes, and continuing ultrasonic dispersion for 90 minutes to obtain a graphene oxide solution; (3) dissolving the copper nitrate in alcohol solution to obtain a copper nitrate solution; (4) adding the copper nitrate solution to the graphene oxide solution in dropwise manner, the stirring process is simultaneously stirring, and after the end of the dropwise addition, continuously stirring for 30 minutes, and then performing ultrasonic treatment for 60 minutes to obtain a mixed solution; (5) preparing 2 mol/l sodium hydroxide solution, adjusting the pH of the mixed solution to 9-11 using a sodium hydroxide solution to obtain a conditioning solution, and then adding hydrazine hydrate in dropwise manner to the conditioning solution, and then transferring to water bath, keeping at 90 degrees C for 2-4 hours, during the heat preservation process, carry out the magnetic stirring, after the completion of heat preservation, taking out, naturally cooling to room temperature, and then the supernatant liquid is sucked up by a pipette, and the remaining floc is first washing with alcohol and then washing with deionized water, and centrifuging to obtain the solid product; (6) freeze-drying the solid product to obtain the graphene powder loaded with copper particles; (7) weighing 0.1-3 wt.% graphene powder loaded with copper particles, 97-99.9 wt.% copper powder, and the sum of mass percentages of the above components is 100%, (8) weighing graphene powder of supported copper particles and copper powder, mixing and dissolving in acetone, and then carrying out ultrasonic treatment for 30 minutes, performing magnetic stirring at 60-80 degrees C until the acetone is completely evaporated to obtain a composite powder; and (9) mechanically mixing the composite powder for 2-8 hours, the composite powder after mixing is pressed into a block and placed in a sintering furnace for hot pressing sintering, and heating to the temperature of 600-900 degrees C after heat preservation for 2-3 hours, finally obtaining the copper-graphene-reinforced copper-based composite material.