▎ 摘　　要

NOVELTY - Preparing oriented carbon nanotube-graphene/copper composite material involves placing carbon nanotubes and graphene in mixed acid for ultrasonic treatment to make them access to hydrophilic groups, activating and sensitizing the acid-treated carbon nanotubes, filtering, washing and drying, performing electroless nickel plating treatment on the surface, washing and filtering repeatedly, drying for future use, weighing low-content nickel-plated carbon nanotubes and the acid-treated graphene to place in ethanol solution to obtain carbon nanotube-graphene suspensions by ultrasonic dispersion and magnetic stirring, and combining the magnetized carbon nanotubes and graphene nanosheets directionally through magnetic field treatment to enhance the synergy between carbon nanotubes and graphene. USE - Method for preparing oriented carbon nano tube-graphene/copper composite material used for aerospace, rail traffic, electric and electronic industry. ADVANTAGE - The method enables to prepare oriented carbon nano tube-graphene/copper composite material, which has excellent dispersibility, mechanical property and high horizontal conductivity, and reduces the preparation cost of the copper-based composite material by mixing acid pre-treatment to the graphene and carbon nano-tube to purify it, and introduces oxygen-containing functional group so as to improve the dispersibility in the ethanol. DETAILED DESCRIPTION - Preparing oriented carbon nanotube-graphene/copper composite material involves placing carbon nanotubes and graphene in mixed acid for ultrasonic treatment to make them access to hydrophilic groups, activating and sensitizing the acid-treated carbon nanotubes, filtering, washing and drying, performing electroless nickel plating treatment on the surface, washing and filtering repeatedly, drying for future use, weighing low-content nickel-plated carbon nanotubes and the acid-treated graphene to place in ethanol solution to obtain carbon nanotube-graphene suspensions by ultrasonic dispersion and magnetic stirring, combining the magnetized carbon nanotubes and graphene nanosheets directionally through magnetic field treatment to enhance the synergy between carbon nanotubes and graphene, placing the oriented carbon nanotube-graphene mixture and copper powder into a vacuum ball mill tank, using a planetary ball mill to increase the contact area of the copper powder and combine with the carbon nanotube-reinforced phase graphene is combined, separating the composite powder from the ethanol solution by suction filtration, drying in a vacuum oven, placing the graphite mold in the electromagnetic field, adding the dry composite powder slowly, so that the composite powder is aligned in the mold, and solidifying the powder by Spark plasma sintering (SPS) vacuum sintering apparatus to obtain aligned carbon nanotubes-graphene/copper composites.