▎ 摘　　要

NOVELTY - Preparing graphene-epoxy composite material involves dissolving graphene oxide deionized water, ultrasonically dispersing obtained solution at 25-60 degrees C for 6 to 24 hours, and adding dopamine into solution for adjusting pH value to 8.0-9.0. Epoxy resin is added to obtained mixture, and then stirred at 15-30 degrees C for 10-40 minutes. Curing agent is added to obtained product, and then stirred for 1-5 minutes to obtain the desired product. USE - Method for preparing graphene-epoxy composite material (claimed). ADVANTAGE - The method enables to prepare graphene-epoxy composite material with good thermal conductivity in a cost-effective and easy manner.