▎ 摘　　要

NOVELTY - Preparing graphene-based alkenyl epoxy resin heat-conducting composite material involves preparing pyrenyl (Py) hyperbranched polyethylene terpolymer (HBPE) composite (HBPE-Py-Poly Glycidyl Methacrylate (PGMA)); taking pyrenyl hyperbranched polyethylene terpolymer (HBPE-Py-PGMA) as stripping stability and functional assistant, ultrasonically stripping natural flaky graphite in organic solvent, and removing un-stripped natural flaky graphite and excessive HBPE-Py-PGMA through centrifugation to obtain HBPE-Py-PGMA functional graphene dispersion liquid; mixing HBPE-Py-PGMA functionalized graphene dispersion liquid, epoxy resin and chloroform solvent, and stirring at room temperature for 1-3 hours to uniformly mixed solution; adding curing agent, stirring for 0.5-1.5 hours at room temperature to uniformly mix solution; carrying out vacuum filtration on obtained mixed solution in vacuum oven at room temperature to remove bubbles. USE - Method for preparing graphene-based alkenyl epoxy resin heat-conducting composite material. ADVANTAGE - The method for preparing graphene-based alkenyl epoxy resin heat-conducting composite material is simple, has short preparation period, and good heat-conducting performance. DETAILED DESCRIPTION - Preparing graphene-based alkenyl epoxy resin heat-conducting composite material involves preparing pyrenyl (Py) hyperbranched polyethylene terpolymer pyrenyl (Py) hyperbranched polyethylene terpolymer (HBPE) composite (HBPE-Py-Poly Glycidyl Methacrylate (PGMA)); taking pyrenyl hyperbranched polyethylene terpolymer (HBPE-Py-PGMA) as stripping stability and functional assistant, ultrasonically stripping natural flaky graphite in organic solvent, and removing un-stripped natural flaky graphite and excessive HBPE-Py-PGMA through centrifugation to obtain HBPE-Py-PGMA functional graphene dispersion liquid; mixing HBPE-Py-PGMA functionalized graphene dispersion liquid, epoxy resin and chloroform solvent, and stirring at room temperature for 1-3 hours to uniformly mixed solution; adding curing agent, stirring for 0.5-1.5 hours at room temperature to uniformly mix solution; carrying out vacuum filtration on obtained mixed solution in vacuum oven at room temperature to remove bubbles; pouring obtained mixed solution in polytetrafluoroethylene mold, pre-curing at 40-60℃ for 0.5-1 hour, and curing at 60-80℃ for 6-10 hours in constant-temperature air-blast drying oven to obtain graphene-based epoxy resin composite material, where graphene-based epoxy resin heat-conducting composite material comprises 1.0-4.0 wt.% graphene.