▎ 摘　　要

NOVELTY - A graphene-containing liquid-solid mixed lubricant contains 5-10 %mass polyphosphate, 0.005-0.015 %mass graphene, 5-10 %mass sodium dihydrogen phosphate, and 80-90 %mass deionized water. USE - Graphene-containing liquid-solid mixed lubricant (claimed). ADVANTAGE - The graphene-containing liquid-solid mixed lubricant has excellent friction resistance, abrasion resistance, thermal stability, high temperature resistance, wear resistance and corrosion resistance, and is environmentally-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-containing liquid-solid mixed lubricant, which involves dissolving sodium dihydrogen phosphate in deionized water at 35-55 degrees C to obtain a primary solution, adding polyphosphate to the primary solution and then uniformly stirring at room temperature, adding aqueous graphene to the mixture, and ultrasonically dispersing for 60 minutes.