Calcium naphthenate zirconium-based hexurea lubricating grease and preparation method thereof

Abstract

The invention discloses calcium naphthenate zirconium-based hexurea lubricating grease. The lubricating grease comprises the following components in percentage by weight: 10-70 percent of non-newton calcium naphthenate, 1-10 percent of zirconium salt of higher fatty acid, 1-15 percent of zirconium salt of micromolecular inorganic acid and / or lower fatty acid, 0.5-30 percent of a polyurea compound and 10-80 percent of base oil, wherein the zirconium salt of higher fatty acid is prepared by reaction of higher fatty acid with a component A, and the zirconium salt of micromolecular inorganic acid and / or lower fatty acid is prepared by reaction of micromolecular inorganic acid and / or lower fatty acid with the component A; the component A is at least one of oxide of zirconium, hydroxide of zirconium and zirconium alkoxide; and the polyurea compound is a hexurea compound. The invention further discloses a method for preparing the lubricating grease and the lubricating grease prepared by the method. The lubricating grease has good mechanical stability, good water resistance, good adhesion, salt mist resistance, colloid stability, extreme pressure antiwear property and the like, and has a long lubricating life.

Description

technical field [0001] The invention relates to lubricating grease, in particular to a calcium naphthenate zirconium-based hexapolyurea 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 a...

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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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