Hydraulic oil composite additive as well as preparation method and application thereof

Abstract

The invention belongs to the field of hydraulic oil composite additives, and particularly discloses a hydraulic oil composite additive and a preparation method and application thereof.The hydraulic oil composite additive is prepared from, by weight, 60-80 parts of sulfur-phosphorus primary and secondary alcohol-based zinc salt, 20-30 parts of mixed primary and secondary alkyl dithiophosphate zinc salt and 10-20 parts of disecondary alkyl dithiophosphate zinc salt oxidation and corrosion inhibitor; the invention relates to an anti-rust paint which is prepared from the following components in parts by weight: 1 to 5 parts of zinc dioctyl dithiophosphate, 1 to 10 parts of an anti-oxidation and anti-corrosion multifunctional additive, 1 to 5 parts of dodecenylsuccinic acid, 1 to 5 parts of high-base-number sulfurized calcium alkyl phenolate, 10 to 15 parts of octyl butyl diphenylamine, 10 to 15 parts of 2, 6-di-tert-butyl-p-methylphenol, 5 to 10 parts of 3, 5-di-tert-butyl-4-hydroxyphenylpropionic acid isooctyl ester and 1 to 5 parts of an imidazoline anti-rust agent. Preferably, novel benzotriazole functionalized carbon nano graphene is adopted as a novel metal deactivator, the adsorbability of graphene and the chelation of benzotriazole derivatives are fully utilized, the performance of the original metal deactivator is improved, the oxidation resistance of the oil product is improved, and the service life of the oil product is prolonged.

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