▎ 摘　　要

NOVELTY - Preparing carbon quantum dot/graphene/2D Zn-MOF ternary nanometer lubricating additive comprises ultrasonically stirring the carbon quantum dot and synthetic graphene of 2 D Zn-MOF uniformly, taking graphene as the growth background of carbon quantum dots and 2D Zn-MOFs by in situ hydrothermal method, and forming carbon quantum dot/graphene/2D Zn-MOF ternary nanocomposite lubricating material. USE - The additive is useful for detecting the aging degree in the process of using the lubricating oil. ADVANTAGE - The additive: is dispersed uniformly in the base oil, without layering and deposition phenomenon, which can reduce the friction and abrasion of the base oil. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for use of carbon quantum dot/graphene/2D Zn-MOF ternary nanometer lubricating additive comprising adding carbon quantum dot/graphene /2D Zn-MOF ternary nanometer lubricating additive into the base oil, measuring the fluorescence intensity of the rubbed lubricating oil in the fluorescence spectrometer, comparing the linear relationship, calculating the iron ion concentration after friction, judging the aging degree of the lubricating oil when the iron ion concentration exceeds 200 ppm is aging.