▎ 摘　　要

NOVELTY - Preparation of graphene-based nanoborate lubricating oil comprises mixing graphene-based nanoborate with base oil, dispersing to obtain first mixture, adding ashless dispersant, succinimide, amine antioxidant and amide solvent to first mixture, mixing to obtain second mixture, heating second mixture at 70-80 degrees C, mixing for 2-4 hours, adding viscosity index improver, composite additive and defoamer, mixing, heating for 2-4 hours, dispersing by ultrasound and filtering. The graphene-based nanoborate is graphene-based cetyl boron borate, graphene-based nanobarium borate or graphene-based nanoborate. USE - Method of preparing graphene-based nanoborate lubricating oil. ADVANTAGE - The method is simple, has low reaction temperature, low friction coefficient, long service life, controllable product and strong anti-wear performance.