▎ 摘　　要

NOVELTY - The preparation method of high conductivity type graphene-resin composite material involves (i) adding natural flake graphite and anhydrous ferric chloride into a vacuum tube, heating to obtain ferric chloride intercalated graphite, (ii) placing ferric chloride intercalated graphite and hydrogen peroxide in beaker to obtain graded graphite, (iii) mixing bisphenol A type E-51 epoxy resin and polyether amine D230 resin curing agent to obtain mixture (i), (iv) adding graded graphene to the mixture (i), stirring and mixing to obtain mixture (ii), (v) curing the mixture (ii), and cooling. USE - Preparation of high conductivity type graphene-resin composite material (claimed). ADVANTAGE - The method enables the preparation of graphene-resin composite material having high electrical conductivity. DETAILED DESCRIPTION - The preparation method of high conductivity type graphene-resin composite material involves (i) adding natural flake graphite and anhydrous ferric chloride into a closed vacuum tube, heating at 320-360 degrees C for 12-48 hours to obtain ferric chloride intercalated graphite, (ii) placing ferric chloride intercalated graphite and an appropriate amount of hydrogen peroxide in a beaker at room temperature for 2 to 6 hours, stripping the intercalated graphite to obtain graded graphite, (iii) mixing bisphenol A type E-51 epoxy resin and polyether amine D230 resin curing agent in a ratio of 3:1 to obtain a mixture (i), (iv) adding graded graphene to the mixture (i), stirring and mixing at 12-18 degrees C for 2-10 hours to obtain mixture (ii), (v) curing the mixture (ii) at 80-120 degrees C for 2-6 hours, and cooling to room temperature. The content of graded graphene in mixture (ii) is 1-5%.