The invention discloses an extreme pressure resistant additive for industrial
gear oil, which is basically characterized by consisting of
base oil,
antimony dialkyl-
dithiocarbamate,
phenothiazine,
fatty amine, thiadiazole, polyisobutene, polyalkoxy
polyamine, a long-chain amino compound, polyalkyl
methacrylate,
polydimethylsiloxane and
metal magnesium powder, namely, 42 to 45 weight percent of
lead naphthenate, 3 to 5 weight percent of diarylamine, 3 to 5 weight percent of ethoxyphenol, 3 to 5 weight percent of thiobenzothiazole, 5 to 6 weight percent of dialkyl dithiophosphate, 3 to 4 weight percent of polyisobutene, 2 to 3 weight percent of polyalkoxy polyalcohol, 2 to 4 weight percent of polyalkyl
methacrylate, 4 to 5 weight percent of polyacrylate, 3 to 4 weight percent of
metal magnesium powder and the balance of
base oil. The preparation method of the additive is simple, economic and practical, and the preparation scheme is scientific. The prepared product is applicable to various kinds of industrial
gear oil and can improve the extreme
pressure resistance of the
gear oil by more than 2 times. Besides the extreme
pressure resistance of the gear oil, the additive can improve the effects of the gear oil to make the effects of the gear oil exceed national standards and prolong the service life of the gear oil.