▎ 摘　　要

NOVELTY - The preparation method of modified graphene oxide material involves adding graphite powder to mixed acid solution and then agitating, adding potassium permanganate powder and then heating, cooling to room temperature, adding 1-2.5 mol/l hydrogen peroxide solution and 0.8-1.5 mol/l hydrochloric acid solution and then washing using deionized water, filtering the mixture, adding 50% ethanol aqueous solution and modifier and then heating, washing using deionized water and centrifugally separating. The mixed acid solution comprises 55 %mass sulfuric acid solution and 45 %mass nitric acid solution. The modifier is carbonyldiimidazole, phenol or sodium bicarbonate. USE - The method is useful for preparation of modified graphene oxide material, which is useful for modification of polycarbonate material. ADVANTAGE - The method enables preparation of modified graphene oxide material with excellent compatibility. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for modified graphene oxide material prepared by the method.