▎ 摘　　要

NOVELTY - Graphene modification of metal involves: (a) providing a metal powder, a graphene powder and an binder, where the metal powder contains metal particles, the graphene powder includes graphene microsheets, each of the graphene microsheets contains connected number of graphene molecules, each graphene molecule contains six carbon atoms connected in a ring, and one of the carbon atoms of each graphene molecule is connected to a stearic acid functional group by a mixed-layer orbital sp3 bond; (b) mixing metal powder, graphene powder and binder into a powder raw material, mixing and rubbing to generate heat to break mixed-layer orbital domain sp3 bonded to each stearic acid functional group after heat absorption, separating the functional groups from graphene molecules, and bonding each of graphene molecules to other graphene molecules through broken sp3 bond of mixed layer orbital domain to make graphene molecules cover each metal particle; and (c) sintering the metal particles. USE - Graphene modification of metal. DETAILED DESCRIPTION - Graphene modification of metal involves: (a) providing a metal powder, a graphene powder and an binder, where the metal powder contains metal particles, the binder includes wax material, the graphene powder includes graphene microsheets, each of the graphene microsheets contains connected number of graphene molecules, each graphene molecule contains six carbon atoms connected in a ring, and one of the carbon atoms of each graphene molecule is connected to a stearic acid functional group by a mixed-layer orbital sp3 bond; (b) mixing metal powder, graphene powder and binder into a powder raw material, mixing and rubbing to generate heat to break mixed-layer orbital domain sp3 bonded to each stearic acid functional group after heat absorption, separating the stearic acid functional groups from the graphene molecules, and bonding each of the graphene molecules to other graphene molecules through the broken sp3 bond of the mixed layer orbital domain to make the graphene molecules cover each metal particle; and (c) sintering the metal particles to fuse the metal particles into a metal main unit, and forming a three-dimensional network integrated in the metal main unit by using the graphene molecules. The binder contains 0.5-2 wt.% coupling agent and 5-20 wt.% dispersant. The coupling agent is titanate or organic chromium complex. The dispersant is methyl pentanol, polyacrylamide or fatty acid polyethylene glycol ester.