Calcium naphthenate-zirconium-based polyurea grease and preparation method thereof

Abstract

The invention discloses a calcium naphthenate-zirconium-based polyurea grease, which comprises: 10-70% by weight of non-Newtonian calcium naphthenate; 1-10% by weight of zirconium of higher fatty acids, based on the weight of the grease Salt; 1-15% by weight of small molecule inorganic acid and / or zirconium salt of lower fatty acid; 0.5-30% by weight of polyurea compound; 10-80% by weight of base oil, wherein the zirconium salt of higher fatty acid is made of high-grade Fatty acid reacts with component A, zirconium salt of small molecular inorganic acid and / or lower fatty acid is formed by reaction of small molecular inorganic acid and / or lower fatty acid with component A, component A is oxide of zirconium, zirconium At least one of hydroxide and zirconium alkoxide. The invention also discloses a preparation method of the lubricating grease and the prepared lubricating grease. The lubricating grease of the present invention has better mechanical stability, water resistance and adhesion, salt spray resistance, colloid stability and extreme pressure and anti-wear properties, and has longer lubrication life.

Description

technical field [0001] The invention relates to lubricating grease, in particular to a calcium naphthenate zirconium-based polyurea lubricating grease and a preparation method thereof. Background technique [0002] High base value calcium naphthenate has good cleaning and dispersibility, good acid neutralization ability and excellent diffusivity. It can be used as a detergent for lubricating oil and widely used as an additive for internal combustion engine lubricating oil. Its technical development is mainly It is to make it highly alkaline, that is, to disperse calcium carbonate into diluent oil with surface active calcium cyclic acid to form a colloidal dispersion system. Calcium naphthenate with high base value is mostly an acidic component extracted from distillate oil obtained from crude oil distillation. After being combined with Ca(OH) 2 Reaction, carbonation and other high alkalinization technology, the relevant patents related to the preparation are CN1465560 and s...

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Problems solved by technology

[0003] Using calcium sulfonate with high base value as raw material to produce lubricating grease, because of its excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance and anti-rust and anti-wear properties, it has been put into the market since then. Since then, it has attracted widespread attention in the grease industry at home and abroad. However, although the high-basic value calcium sulfonate-based grease has excellent comprehensive properties, the high price of its raw material high-basic calcium sulfonate and its own complicated preparation At the same time, as people's requirements for environmental protection are getting higher and higher, the pollution of the environment by the sulfonation process that must be passed through the production process of high-alkaline calcium sulfonate is also increasingly concerned by people.

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