▎ 摘　　要

NOVELTY - Graphene modified lubricant comprises 0.005 -5 wt.% graphene, 15-30 wt.% oily agent, 2-4 wt.% extreme pressure agent, 0.2-0.4 wt.% antifoaming agent, 3-5 wt.% rust inhibitor, 0.5-3 wt.% dispersant, 0.2-1 wt.% pH adjuster and water (balance amount), where the oily agent is fatty acid polyethylene glycol polyamine condensate (I) and its molecular weight is 1000-2100. USE - Used as graphene modified lubricant. ADVANTAGE - The graphene modified lubricant: has low friction coefficient, excellent lubrication performance, uniform and stable system dispersion, and prolonged service life; is energy saving; solves the problem of the dispersibility of graphene; and utilizes oily agent, which improves the stability of graphene. DETAILED DESCRIPTION - Graphene modified lubricant comprises 0.005 -5 wt.% graphene, 15-30 wt.% oily agent, 2-4 wt.% extreme pressure agent, 0.2-0.4 wt.% antifoaming agent, 3-5 wt.% rust inhibitor, 0.5-3 wt.% dispersant , 0.2-1 wt.% pH adjuster and water (balance amount), where the oily agent is fatty acid polyethylene glycol polyamine condensate of formula (I), and its molecular weight is 1000-2100. R1, R2 = 28-44C substituent; R3 = H or 1-3C alkyl; and m and n = 1-3. An INDEPENDENT CLAIM is also included for preparing the graphene modified lubricant, comprising (i) placing oily agent, extreme pressure agent, antifoaming agent and rust inhibitor into reaction kettle, adding half of the water, heating at 50-60 degrees C and stirring, (ii) taking certain amount of graphene, adding remaining half water and dispersant, and carrying out ultrasonic dispersion for 30 minutes, (iii) slowly adding the material of step (ii) to the material of step (i) while stirring, adjusting pH value to 9 with a pH adjuster, stirring for 20 minutes, and cooling to room temperature to obtain final product.