▎ 摘　　要

NOVELTY - Preparing high-molecular matrix/three-dimensional graphite composite material involves dispersing three-dimensional graphene in de-ionized water ultrasonically for 0.5-2 hours followed by the addition of surfactant with stirring. The mixture is heated to 70-120 degrees C and then dried for 12-48 hours to obtain modified three-dimensional graphene powder which is mixed with polymeric substrate with mechanical stirring for 10-60 minutes and then with curing agent to obtain polymer matrix/three-dimensional graphene mixture. USE - Method for preparing high-molecular matrix/three-dimensional graphite composite material used in integrated circuit(claimed). ADVANTAGE - The method enables to prepare high-molecular matrix/three-dimensional graphite composite material which has improved thermal conductivity. DETAILED DESCRIPTION - Preparing high-molecular matrix/three-dimensional graphite composite material involves dispersing three-dimensional graphene in de-ionized water ultrasonically for 0.5-2 hours followed by the addition of surfactant with stirring. The mixture is heated to 70-120 degrees C and then dried for 12-48 hours to obtain modified three-dimensional graphene powder which is mixed with polymeric substrate with mechanical stirring for 10-60 minutes and then with curing agent to obtain polymer matrix/three-dimensional graphene mixture. The product is cold pressed under pressure of 5-20 mega pascals and then dried in vacuum at 70-100 degrees C for 15-30 minutes to obtain desired high-molecular matrix/three-dimensional graphite composite material.