▎ 摘　　要

NOVELTY - Preparation of rare earth-modified graphene copper based composite material involves (step 1) ball milling graphite, organic amine and (I) alcohol substance, carrying out centrifugal separation on a ball milling product, and dispersing the obtained centrifugal product in a (II) alcohol substance, obtaining the surface graphene modified organic amine of the dispersion liquid, (step 2) dissolving copper salt in a (III) alcohol substance to obtain the mixture, adding the graphene modified organic amine of graphene dispersion, stirring to obtain an organic graphene copper complex dispersion liquid, and reducing under the function of reducing agent to form graphene copper composite material, (step 3) the graphene copper based composite material and rare earth oxide for ball milling to obtain the mixed powder, the obtained mixed powder and carrying out plasma sintering on the obtained mixed powder to obtain the rare earth modified graphene copper-based composite material. USE - Preparation of rare earth modified graphene copper based composite material used for contact line for high speed rail (all claimed). ADVANTAGE - The rare earth modified graphene copper based composite material has high strength, hardness, wear resistance and corrosion resistance, and excellent interface bonding property between the copper and copper-based composite material, and improved mechanical strength and high-conductivity.