▎ 摘　　要

NOVELTY - Manufacture of carbon nanotube/graphene hydrogel/polystyrene composite material involves mixing carbon nanotubes and a graphene oxide suspension, ultrasonically dispersing, adding ascorbic acid, reacting, freeze-drying to obtain carbon nanotube/graphene hydrogel, mixing a styrene monomer and azobisisobutyronitrile to obtain a prepolymer mixture, adding the prepolymer mixture to the carbon nanotube/graphene hydrogel material, heating, polymerizing to obtain carbon nanotube/graphene hydrogel/polystyrene composite, heat-treating the composite material, pressurizing, and cooling. USE - Manufacture of carbon nanotube/graphene hydrogel/polystyrene composite material (claimed). ADVANTAGE - The method is environmentally-friendly, and enables simple and efficient manufacture of carbon nanotube/graphene hydrogel/polystyrene composite material with low density, high porosity, high strength than the pure styrene, and excellent electroconductivity. DETAILED DESCRIPTION - Manufacture of carbon nanotube/graphene hydrogel/polystyrene composite material involves forming a graphene oxide suspension by Hummers method, mixing carbon nanotubes and the graphene oxide suspension, ultrasonically dispersing for 3-4 hours to obtain a dispersion, adding ascorbic acid as a reducing agent into the dispersion, uniformly stirring, reacting at 65-90 degrees C for 6-8 hours, soaking the product in deionized water for 2-3 days, and anhydrous ethanol for 2-3 days, placing the product in refrigerator for 11-13 hours, freeze-drying for 36-60 hours to obtain carbon nanotube/graphene hydrogel, mixing a styrene monomer and azobisisobutyronitrile initiator to obtain a prepolymer mixture, adding the prepolymer mixture to the carbon nanotube/graphene hydrogel material, heating, performing in-situ polymerization to obtain carbon nanotube/graphene hydrogel/polystyrene composite, heat-treating the composite material to glass transition temperature of polystyrene, pressurizing, and naturally cooling to room temperature.