▎ 摘　　要

NOVELTY - Graphene-containing friction modifier comprises 0.3-1.2 %mass nanographene, 3-8 %mass nanographite particles, 1-6 %mass polymer protective colloid, 0.5-5 %mass dispersing agent, and remainder of base oil. USE - Graphene-containing friction modifier is used for engine. ADVANTAGE - The graphene-containing friction modifier has excellent wear resistance, dispersibility, lubricating property, sealing characteristics, and stable colloidal property. The friction modifier improves the life of engine. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-containing friction modifier, which involves preparing nanographite particles-grinding material using graphite powder, cellulose, methylene bisnaphthalene sulfonate, 25% aqueous ammonia, and water, mixing and grinding, adding hydrochloric acid, filtering, adding polyvinyl alcohol, dispersing and drying.