▎ 摘　　要

NOVELTY - Preparing graphene composite copper heat-conducting film comprises adding graphene oxide into water and stirring to obtain graphene oxide slurry, adding copper sulfate solution into graphene oxide slurry to obtain graphene oxide/copper sulfate composite slurry, coating the graphene oxide-copper sulfate composite slurry on the substrate, sending the base material into tunnel bin and tunnel furnace full of hydrogen iodide vapor successively to obtain fluffy graphene composite nano-copper film, placing the fluffy graphene composite nano-copper film in a carbonization furnace, placing in a graphitization furnace to obtain heat-treated fluffy graphene composite nano-copper film, placing the heat-treated fluffy graphene composite nano-copper film in a vacuum high-temperature hot-pressing sintering furnace at 1400-1800°C. USE - The method is useful for preparing graphene composite copper heat-conducting film. ADVANTAGE - The heat conducting film has excellent thermal conductivity and heat conductivity in the thickness direction, and is prepared in a simple and cost effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene composite copper heat conducting film prepared by the above-mentioned method. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of method for preparing graphene composite copper heat-conducting film (Drawing includes non-English language text).