▎ 摘　　要

NOVELTY - Preparing conductive copper-based nano-carbon composite material, comprises (i)adding flake copper powder into a solvent to disperse to obtain a copper dispersion, and adding a surfactant to the copper dispersion for modification, to obtain a modified copper dispersion; (ii) adding graphene oxide into the solvent to disperse to obtain graphene oxide dispersion liquid, and in graphene oxide dispersion liquid, adding tension-active agent and carrying out modification to obtain the graphene oxide dispersion liquid after modification; (iii) adding the modified graphene oxide dispersion into modified copper dispersion, mixing and stirring, so that the surface of the copper powder is adsorbed on graphene oxide, filtered and dried to obtain graphene oxide-copper composite flake powder. USE - The material is useful in the field of electric conduction and heat conduction. ADVANTAGE - The conductive copper-based nano-carbon composite material has large specific surface area, small thickness, strong electrostatic adsorption effect, and excellent yield strength and tensile plasticity (tensile strength of ??? 90 + 21 MPa, higher than nanocrystalline pure copper 35 %).