A kind of phosphorus-containing engine coolant and preparation method thereof

Abstract

The invention provides a phosphorus-containing engine coolant, which comprises the following components in parts by weight: 0.5-3% of phosphorus-containing corrosion inhibitor, 0.5-3% of scale inhibitor, 0.1-1% of buffer agent, and 0.001-3% of defoamer 0.1%, alkaline pH adjuster 0.5-1.0%, organic solvent 30-60%, water balance. The phosphorus-containing engine coolant of the present invention adopts additive enrichment technology, effectively solves the problem of poor stability of the phosphorus-containing coolant in hard water, and has good compatibility with hard water; the phosphorus-containing engine coolant of the present invention has excellent metal retardation Corrosion performance, in line with the requirements of engine coolant; at the same time, it has good compatibility with non-metallic materials, which ensures the protection of non-metallic materials during use and prolongs their service life.

Description

technical field [0001] The invention relates to a phosphorus-containing engine coolant, in particular to an engine coolant, which has excellent corrosion inhibition performance of aluminum and solder metal, and has good hard water compatibility and good non-metallic material phase Capacitance. Background technique [0002] With the improvement of engine power, continuous reduction of volume, strict control of emissions, heat load and related reliability issues are becoming more and more prominent, the importance of cooling system is increasing day by day. [0003] The engine coolant is mainly composed of water, ethylene glycol and additives. The second additive is mainly a corrosion inhibitor. The function of the additive is mainly anti-corrosion, and at the same time it has the functions of anti-scaling and anti-foaming. At present, the base liquid of most coolants is basically The above are all ethylene glycol, and the difference between different formulations is mainly d...

AI Technical Summary

Problems solved by technology

At present, most of the coolant products on the market use silicon-containing or organic acid-based corrosive agents. This type of product basically has advantages and disadvantages, especially for Japanese and Korean cars, which generally use phosphorus-containing cooling systems. Liquid, with the gradual increase of Japanese and Korean vehicles, it is necessary to develop phosphorus-containing coolant products with better performance, because traditional phosphates will reduce the protective effect on aluminum at high temperatures, and will also interact with calcium and magnesium ions in hard water Combined to form floc deposits, block radiator coils, cause poor coolant flow, and generate overheating, so it is necessary to improve the shortcomings of phosphorus-containing formulas to meet the needs of modern engines

Images