▎ 摘　　要

NOVELTY - Preparation of aluminum oxide-graphene modified polystyrene material involves adding graphene oxide to distilled water, ultrasonically dispersing into graphene oxide dispersion, adding nano-aluminum oxide to absolute ethanol, ultrasonically dispersing to obtain aluminum oxide dispersion, mixing graphene oxide dispersion mixing with aluminum oxide dispersion, adjusting pH to 10 with aqueous ammonia, ultrasonically dispersing, reacting to obtain aluminum oxide-graphene composite hydrogel, adding aluminum oxide-graphene composite hydrogel and acrylic acid to benzene solvent, leaving still, stirring, filtering and drying to obtain acrylic acid modified aluminum oxide-graphene composite hydrogel, adding acrylic acid modified aluminum oxide-graphene composite hydrogel, azobisisobutyronitrile and styrene to benzene solvent, stirring and reacting, filling reaction material into sealed mold, placing in oven, heating, releasing seal and open heating to remove excess benzene solvent. USE - Preparation of aluminum oxide-graphene modified polystyrene material. ADVANTAGE - The prepared aluminum oxide-graphene modified polystyrene material has excellent thermal conductivity, mechanical property, compatibility, dispersibility, and curing and crosslinking degree. DETAILED DESCRIPTION - Preparation of aluminum oxide-graphene modified polystyrene material involves adding graphene oxide to distilled water, ultrasonically dispersing into graphene oxide dispersion, adding nano-aluminum oxide to absolute ethanol, ultrasonically dispersing to obtain aluminum oxide dispersion, mixing graphene oxide dispersion mixing with aluminum oxide dispersion, adjusting pH to 10 with aqueous ammonia, ultrasonically dispersing, transferring to PTFE-lined reactor, reacting at 180-200 degrees C for 10-15 hours to obtain aluminum oxide-graphene composite hydrogel, adding aluminum oxide-graphene composite hydrogel and acrylic acid to benzene solvent, leaving still for 20-30 hours, stirring at room temperature for 3-5 hours, filtering and drying to obtain acrylic acid modified aluminum oxide-graphene composite hydrogel, adding acrylic acid modified aluminum oxide-graphene composite hydrogel, azobisisobutyronitrile and styrene to benzene solvent, stirring and reacting at 70-80 degrees C under nitrogen atmosphere for 3-5 hours, filling reaction material into sealed mold, placing in oven, heating under nitrogen atmosphere at constant temperature of 80-90 degrees C for 20-24 hours for hardening, releasing the seal and open heating to remove excess benzene solvent.