▎ 摘　　要

NOVELTY - The preparation method involves weighing 0.1-1% multilayer graphene nanosheet and 95-99.9% copper metal powder having particle size of 1-15 mu m, placing the raw material and grinding aid carbon source into a ball milling tank, ball milling at 100-400 revolutions/minute for 2-15 hours to obtain mixed material, placing the mixed material into a graphite mold, placing on a pressure machine table, pressing at 2-50 MPa for 3-20 minutes to obtain pre-pressed mixture, transferring the pre-pressed mixture to a plasma sintering heating furnace, heating at 800-1100 degrees C for 10-60 minutes under protection atmosphere, heat-preserving for 2-30 minutes, cooling to room temperature, demolding to obtain graphene-reinforced copper-based composite material, and rolling the graphene-reinforced copper-based composite material at 400-900 degrees C and 176-176 degrees C along different direction with different reduction rate of 1-20%, and rolling into sheet with thickness of 0.8 mm. USE - The method is useful for preparing graphene-reinforced copper-based composite material with high heat-conducting performance. ADVANTAGE - The method enables preparation of graphene-reinforced copper-based composite material with high heat-conducting performance.