Thiadiazole-derivative/graphene-containing lubricating oil additive and preparation method thereof, and lubricating oil containing additive

The invention belongs to the field of chemical industry, and relates to a thiadiazole-derivative/graphene-containing lubricating oil additive and a preparation method thereof, and a lubricating oil containing the additive. The additive comprises thiadiazole derivatives, graphene, mercaptan, isopropanol, a 30 wt% formaldehyde solution, rare earth chlorides, alkali liquor and phenol substitutes. The nano graphene, which is used as the lubricating oil additive into the lubricating oil, has the functions of protection and repair, and forms a protective film, which can not be penetrated through even by hydrogen atoms, on the inner wall surface of the machine. When the graphene starts to be abraded, the hydrogen atoms jump and repair the crystal lattices, which indicates that the nano-graphene-added lubricating oil can keep permanently effective. The functional groups of the thiadiazole derivatives can form coordinate bonds and hydrogen bonds with graphene, thereby being beneficial to enhancing the dispersity of th