Boron-nitride-type borate lubricating oil additive and preparation method thereof

Abstract

The invention discloses a boron-nitride-type borate lubricating oil additive and a preparation method thereof. The preparation method comprises the following steps: putting tall oil and diethanolamine in a container, and reacting at 100-120 DEG C for 4-5 hours to obtain tall oil acetal amide; mixing salicylaldehyde and n-butylamine, adding ethanol, reacting at 50-60 DEG C in a reflux unit for 2-3 hours, adding the prepared tall oil acetal amide, adding boric acid, and uniformly mixing; reacting at 70-80 DEG C for 1-1.5 hours while keeping the pressure stable at 260-270 mmHg; depressurizing to the stable pressure of 60-70 mmHg, gradually heating to 90-100 DEG C, and reacting for 3-4 hours; and cooling, and filtering to obtain the light yellow liquid. The production method is simple, and has the advantages of low cost, high hydrolysis resistance of the product, high yield and environment friendliness.

Description

technical field

[0001] The invention relates to a lubricating oil additive and a preparation method thereof, in particular to a boron nitride type borate lubricating oil additive and a preparation method thereof. Background technique

[0002] In order to increase the anti-friction and anti-wear effect of lubricating oil, a small amount of lubricating oil additives are usually added to the lubricating oil. The traditional lubricating oil additives are sulfur, phosphorus or chlorine type anti-wear agents, which are corrosive to friction pair materials. selective. In particular, lubricating oil additives containing elements such as sulfur, phosphorus or chlorine will discharge a large amount of waste water, waste gas and pollutants during production and use, thus causing pollution to the environment.

[0003] Boron nitride borate is an important class of boron-containing compounds. In recent years, it is mainly used in lubricating oil additives and automobile brake fluids. At...