▎ 摘　　要

NOVELTY - Preparing composite material involves dispersing graphene oxide in an epoxy resin, adding to obtained dispersion in a hardener, performing impregnation of the reinforcement material with the resin hardened, performing solidification of obtained product, dispersion does not comprise organic solvents and that stage is consists of the following sub-stages, performing graphene oxide treatment with ultrasound with a frequency between 10-18 kilo hertz for 10-25 minutes, breaking down of obtained graphene oxide. The graphene oxide is obtained by treatment with ultrasound with a frequency between 18-20 kilo hertz for 1-7 minutes. USE - Method for preparing composite material. ADVANTAGE - The method enables to prepare composite material is able to improves mechanical properties of carbon fiber/graphene oxideepoxy hybrid composites.