▎ 摘　　要

NOVELTY - Preparation of graphene-reinforced metal-based foam framework structure composite material involves (1) adding cleaning agent to copper foam for ultrasonic cleaning for 30-60 minutes, obtaining a pretreated copper foam, (2) mixing sodium hydroxide aqueous solution and ammonium persulfate aqueous solution in equal volumes to obtain a mixed solution, immersing the pretreated copper foam in the mixed solution, taking out the copper foam, washing with ethanol and deionized water, drying, obtaining a nano copper hydroxide-copper foam matrix, (3) calcining the nano copper hydroxide-copper foam matrix at 800-1000 degrees C, obtaining a nano copper oxide-copper foam matrix, (4) feeding the nano copper oxide-copper foam substrate into a tube furnace, feeding protective gas and reducing gas, (5) turning off the reducing gas, feeding carbon source gas, carrying out three-dimensional network graphene deposition, turning off the carbon source gas, and cooling to room temperature. USE - Preparation of graphene-reinforced metal-based foam framework structure composite material (claimed). ADVANTAGE - The method uses a simple oxidation method to prepare copper oxide with a mesoporous structure on a copper foam substrate to increase the specific surface area of the copper foam, so that the metal-based foam framework has controllable multi-stage pores. The mesoporous structure provides a large number of active sites for the subsequent chemical vapor deposition reaction, so that the grown graphene has a relatively complete three-dimensional network structure, which can improve the strength of composite material. DETAILED DESCRIPTION - Preparation of graphene-reinforced metal-based foam framework structure composite material involves (1) adding cleaning agent to copper foam for ultrasonic cleaning for 30-60 minutes, obtaining a pretreated copper foam, (2) mixing 5 mol/L sodium hydroxide aqueous solution and 0.25 mol/L ammonium persulfate aqueous solution in equal volumes to obtain a mixed solution, immersing the pretreated copper foam in the mixed solution, reacting at 0-4 degrees C for 2-4 hours, taking out the copper foam, washing 3-5 times with ethanol and deionized water, drying, obtaining a nano copper hydroxide-copper foam matrix, (3) calcining the nano copper hydroxide-copper foam matrix at 800-1000 degrees C, obtaining a nano copper oxide-copper foam matrix, (4) feeding the nano copper oxide-copper foam substrate into a tube furnace, feeding protective gas at a flow rate of 200-400 sccm, feeding reducing gas at a flow rate of 100-200 sccm, annealing at a rate of 10-20 degrees C/minute to 900-1000 degrees C for 20-40 minutes, (5) turning off the reducing gas, feeding carbon source gas, carrying out three-dimensional network graphene deposition for 40-60 minutes, turning off the carbon source gas, cooling to 200-350 degrees C at a rate of 10-15 degrees C/minute under protective gas atmosphere, and cooling to room temperature. An INDEPENDENT CLAIM is included for graphene-reinforced metal-based foam framework structure composite material, which comprises 1.5-6 wt.% graphene.