Abrasion resistant extreme-pressure additive of borate and preparation method thereof

Abstract

The invention relates to borate antiwear and extreme pressure additive and a preparation method thereof. The additive mainly comprises oil media, dispersant and macromolecule polymerization borate, and the weight percentage is as follows: 10 to 50 percent of oil media, 1-5 percent of dispersant and 50 to 90 percent of macromolecule polymerization borate; the oil media is the mixture of mineral base oil, synthetic base oil, mineral oil and synthetic oil; the dispersant adopts C12-C22 fatty acid metallic soap or C12-C22 hydroxyl fatty acid metallic soap; the preparation method is, firstly, according to the molar ratio of 1:1 to 0.2:1, caustic potash and boric acid are added in a certain amount of water in sequence, and heated to 70 to 90 DEG C and react for a certain time; secondly, one or several types of the above base oil is added, and heated to 100 to 200 DEG C, the water is evaporated, and then heated to 200 to 230 DEG C, and polymerization reaction lasts for 0.5 to 1h; thirdly, the mixture is cooled down to approximate 180 DEG C, one or several types of the above dispersant is added, and continuously cooled down to approximate 110 DEG C, took out of the reaction vessel, homogenized under high pressure with a homogenization pump, and the finished product is obtained; the invention has the advantages that the technology is simple; the operation is easy; the water resistance is good; the steadiness is good; the antiwear and extreme pressure property is excellent; and the application range of the borate is widened.

Description

technical field [0001] The invention relates to a petrochemical additive and a preparation method thereof, specifically, an anti-wear extreme pressure additive mainly used in lubricating grease. Background technique [0002] Borate is a kind of extreme pressure and anti-wear additive that attracted people's attention in the early 1980s. Many research results at home and abroad show that borate has its unique advantages as extreme pressure additive: good anti-wear, non-toxic, non-toxic Odor, no corrosion of metal, good high temperature resistance, good extreme pressure and wear resistance above 250°C, good compatibility with active additives containing sulfur, phosphorus, and chlorine, and the compound effect (synergy) is obvious. In addition, the action mechanism of borate extreme pressure additives is also different from other organic extreme pressure antiwear agents. It is not due to the reaction with the metal to form a reaction film, but because the surface of the fricti...

AI Technical Summary

Problems solved by technology

The disadvantage is that the product contains sodium petroleum sulfonate, which affects the colloidal stability of the product when used in lubricating grease, and then affects the dropping point, consistency, mechanical stability, water resistance and other properties of the lubricating grease, so it is basically not applicable in the lubricating grease; The second is to dry potassium borate, grind it into a fine powder, and use it directly in the product

Its disadvantage is poor dispersion and precipitation in some high-viscosity oils and semi-fluid greases, thus limiting its scope of use

The third is nano ultra-fine borate lubricating oil additive, using spray technology or ultrasonic emulsification method introduced in CN1175621A patent technology, the process is complicated

[0004] At the same time, because borate-type additives have the problem of poor water resistance, improving or solving the problem of water resistance of borate-type additives has become the focus of attention of technicians in this field

Although the CN1362500 patent technology does not mention the water resistance problem, its borate additive component is mainly small molecule borate, so there is basically no improvement in water resistance

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