The invention belongs to the field of modification of
graphene copper-based composite materials in the field of materials, and particularly relates to a
rare earth modified
graphene copper-based
composite material and a preparation method and application thereof. The preparation method comprises the specific steps that
graphite, organic amine and an
alcohol substance are subjected to ball milling and then separated in different centrifugal intervals, the obtained product is dispersed into the
alcohol substance to obtain dispersion liquid, then the dispersion liquid and
copper salt are subjected to a copper mirror reaction and reduced to prepare the
graphene copper-based
composite material, the graphene copper-based
composite material and
rare earth oxide are mixed and subjected to ball milling to obtain mixed
powder, and the graphene copper-based composite material is prepared. And finally,
spark plasma sintering is conducted, and the
rare earth modified graphene copper-based composite material is obtained. The graphene copper-based composite material is prepared by constructing a uniform and stable graphene-amine salt-copper
ion system, and the problem that the
interface bonding property between graphene and copper is poor is solved; the design and preparation of the rare earth
oxide dispersion strengthened copper-based composite material are provided, and the
mechanical strength of the copper-based composite material can be greatly improved while the
conductivity is not obviously reduced.