Engine cooling media and preparation thereof

Abstract

The invention relates to a cooling medium for an engine and a preparation method thereof. The cooling medium comprises the following components in weight percentage concretely: 8 or 15 percent of deionized water, 80 or 96 percent of propylene glycol, 0.6 to 1 percent of decanedioic acid, 0.8 to 1.6 percent of octanoic acid, 0.8 to 1.5 percent of potassium hydroxide, 0.4 percent of sodium molybdate, and 0.4 percent of phthalic acid. The preparation method for the cooling medium for the engine comprises the following steps: (1) adding the propylene glycol into a reaction kettle and stirring the propylene glycol; (2) adding the decanedioic acid and the octanoic acid into the reaction kettle, heating the sodium molybdate and the phthalic acid to between 80 and 100 DEG C, keeping the temperature for 10 to 50 minutes, and obtaining a transparent liquid; (3) dissolving the potassium hydroxide in the deionized water, and slowly adding the potassium hydroxide into the transparent liquid; and (4) adjusting pH value to between 7.5 and 8.5, and then cooling the mixed solution to obtain the cooling medium. The cooling medium for the engine has the advantages of energy conservation, environmental protection and low use cost, and is not easy to corrode metal parts of the engine for a long term.

Description

technical field [0001] The invention relates to a liquid medium for engine cooling. Background technique [0002] At present, the engine cooling medium is mostly low-molecular alcohols such as ethylene glycol and methanol, which have a short service life and are prone to precipitation, resulting in increased engine energy consumption, which is neither economical nor environmentally friendly. At present, there are also some new engine cooling media with various additives added to solve the problem of service life and precipitation, but it has caused an increase in the manufacturing cost of the engine cooling media, thereby increasing the vehicle use cost of the owner, and this kind of engine cooling media is essential for the engine The metal parts inside are corroded. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention designs and develops an engine cooling medium that is energy-saving, environment-friendly, low in use cost, and n...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the engine cooling media are low-molecular alcohols such as ethylene glycol and methanol, which have a short service life and are prone to precipitation, resulting in increased energy consumption of the engine, which is neither economical nor environmentally friendly.

At present, there are also some new engine cooling media with various additives added to solve the problem of service life and precipitation, but it has caused an increase in the manufacturing cost of the engine cooling media, thereby increasing the vehicle use cost of the owner, and this kind of engine cooling media is essential for the engine Metal parts inside are corroded