▎ 摘　　要

NOVELTY - Processing plastic of high-strength and high-conductivity graphene reinforced copper matrix complex comprises (i) adding electrolytic copper powder and graphene of into a V-shaped mixer, adding process control agent made of a mixture of absolute ethanol and acetone into a steel ball, and using V-type mixer to mechanically mix to obtain uniformly mixed complex powder, (ii) adding the complex powder into a steel mold, and pressing into a cylindrical cold-pressed blank, (iii) adding obtained cold-pressed blank into a graphite mold, placing graphite mold in vacuum hot-press sintering furnace, increasing temperature and keeping it warm, applying pressure to obtain extruded blank, (iv) adopting graphite emulsion lubrication on inner surface of extrusion die, preheating extrusion die, and uniformly coating surface of extrusion blank with cubic nitrogen boron powder, heating, incubating, adding processed extrusion blank, and extruding, and (v) heat-treating in vacuum. USE - The method is useful for processing plastic of high-strength and high-conductivity graphene reinforced copper matrix complex. ADVANTAGE - The high-strength and high-conductivity graphene-reinforced copper-based complex material: has a uniform organization, excellent interface between graphene and the substrate, and a stable graphene sheet structure. The method is economical; has relative product density less than 99%, easy in combining the two-phase interface of the graphene-reinforced copper-based complex material, graphene easy to agglomerate, and high comprehensive performance. DETAILED DESCRIPTION - Processing plastic of high-strength and high-conductivity graphene reinforced copper matrix complex comprises (i) adding 95-99 wt.% electrolytic copper powder and 1-5 wt.% graphene of into a V-shaped mixer, and adding process control agent made of a mixture of absolute ethanol and acetone into a steel ball, and using V-type mixer to mechanically mix for 60-120 hours at a speed of 90-120 revolutions/minute (rpm) to obtain a uniformly mixed complex powder, (ii) adding the complex powder into a steel mold, and pressing into a cylindrical cold-pressed blank under a pressure of 500-1000 MPa, (iii) adding the cold-pressed blank obtained in the step (ii) into a graphite mold, and placing graphite mold in a vacuum hot-press sintering furnace with a vacuum degree of 10-3 to 10-4 Pa, increasing the temperature to 900-1100 degrees C at a rate of 10 degrees C/minutes and keeping it warm for 30 minutes, increasing the temperature to 1120-1350 degrees C at a rate of 20 degrees C/minutes and keeping it warm for 15-45 minutes, applying a pressure of 30-50 MPa and keeping the pressure 1-3 hours to obtain extruded blank, (iv) adopting graphite emulsion lubrication on the inner surface of the extrusion die, preheating the extrusion die to 450 degrees C, and uniformly coating the surface of the extrusion blank in the step (iii) with cubic nitrogen boron powder, heating the extruded blank to 950-1050 degrees C and incubating for 30-50 minutes, adding the processed extrusion blank into the extrusion die, extruding the extrusion blank under the condition that the extrusion ratio is 10-27, and obtaining extruded graphene reinforced copper matrix complex rods, and (v) heat-treating obtained rod in vacuum at 600-900 degrees C for 2-8 hours.