▎ 摘　　要

NOVELTY - Preparing epoxy-based conductive and thermally conductive adhesive involves expanding graphene intercalation compound thermally at 650-800 degrees C for 1-2 minutes, graphene intercalation compound after thermal expansion is obtained, adding acetone, immersing graphene intercalation compound to graphene intercalation compound after thermal expansion, and ultrasonically stripping for 20-50 minutes to obtain graphene nanosheet solution, adding acetone to epoxy resin and mixing well to obtain epoxy resin acetone solution. The volume of acetone used is volume that is sufficient to dissolve epoxy resin, mix epoxy resin acetone solution andgraphene nanosheet solution, and ultrasonically shaked for 20-60 minutes to obtain epoxy/graphene mixed solution. The mixing ratio of the epoxy resin acetone solution and graphene nanosheet solution M/m is equal to k, where K is a proportional coefficient. USE - Method for preparing epoxy-based conductive and thermally conductive adhesive. ADVANTAGE - The method enables to prepare epoxy-based conductive and thermally conductive adhesive that improves performance of epoxy conductive heat conducting adhesive and solves problem that existing epoxy adhesive poor toughness, electric and heat conduction property is bad. DETAILED DESCRIPTION - Preparing epoxy-based conductive and thermally conductive adhesive involves expanding graphene intercalation compound thermally at 650-800 degrees C for 1-2 minutes, graphene intercalation compound after thermal expansion is obtained, adding acetone, immersing graphene intercalation compound to graphene intercalation compound after thermal expansion, and ultrasonically stripping for 20-50 minutes to obtain graphene nanosheet solution, adding acetone to epoxy resin and mixing well to obtain epoxy resin acetone solution. The volume of acetone used is volume that is sufficient to dissolve epoxy resin, mix epoxy resin acetone solution andgraphene nanosheet solution, and ultrasonically shaked for 20-60 minutes to obtain epoxy/graphene mixed solution. The mixing ratio of the epoxy resin acetone solution and graphene nanosheet solution M/m is equal to k, where K is a proportional coefficient, which is 0.5-2, M is a quality of the graphene nanosheet in the graphene nanosheet solution, m is the mass of graphene nanosheets in graphene nanosheet solution, quality of epoxy resin, quality of curing agent used in epoxy resin, ratio of curing agent, epoxy resin is (1-1.3):3.3, remove acetone and bubbles in epoxy/graphene mixed solution to obtain epoxy/graphene mixture. The curing agent is added to epoxy/graphene mixture and stirring to obtain epoxy-based conductive thermally conductive adhesive.