Regenerated base oil lubricating oil anti-photothermal stabilizer

The invention relates to a regenerated base oil lubricating oil anti-photothermal stabilizer, and belongs to the technical field of lubricating oil preparation. The stabilizer is characterized by being prepared from the following raw materials in parts by weight: 3-5 parts of 2, 6-butylated hydroxytoluene, 3-5 parts of zinc dialkyl dithiophosphate, 5-10 parts of an ultraviolet light absorber, withthe balance of base oil. the preparation method comprises the following steps: mixing 2, 6-butylated hydroxytoluene and base oil according to a weight ratio of 1: 10-15 to obtain a component A; mixing zinc dialkyl dithiophosphate and the base oil according to the weight ratio of 1: 10-15 to obtain a component B; mixing the ultraviolet light absorber and the base oil according to a weight ratio of1: 10-20 to obtain a component C; and adding the component A, the component B and the component C into lubricating oil to be updated through online blending and filling equipment. A quantitative premixing device, a nitrogen a