▎ 摘　　要

NOVELTY - Preparing modified graphene composite metal material, comprises (a) dissolving rare earth compound in a solvent, and adding acid to adjust the pH of the rare earth solution; (b) heating modifier, adding graphene or graphene oxide, and ultrasonically dispersing after soaking to obtain a reaction solution, adding hydrazine hydrate, stirring, filtering, washing, and drying; (c) grinding modified graphene powder, adding water and mixing evenly, adding ethylenediamine, heating and stirring to react, filtering, washing, and drying; (d) adding first dispersant into functionally enhanced modified graphene to obtain a modified graphene dispersion, and adding metal powder with a second dispersant to obtain a metal dispersion; (e) mixing modified graphene dispersion with the metal dispersion, and carrying out ultrasonic dispersion; and (f) filtering and drying modified graphene composite metal dispersion to obtain a graphene composite metal mixed powder, which is molded and sintered. USE - The method is useful for preparing modified graphene composite metal material. ADVANTAGE - The method is simple in process, short in time, low in cost, has excellent mechanical property and heat conducting performance, and is suitable for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for modified graphene composite metal material.