Engine coolant

Abstract

The invention belongs to the technical field of chemical composition and particularly relates to an engine coolant. The engine coolant is prepared from the following substances in parts by weight: 45-55 parts of water, 25-35 parts of ethylene glycol, 5-8 parts of carboxylate, 5-12 parts of silicate stabilizer, 1-3 parts of nano oxide, 15-25 parts of propylene glycol, 1-5 parts of cesium formate, 3-5 parts of trimethylglycine, 5-8 parts of citric acid, 5-10 parts of ammonium citrate, 15-25 parts of molybdate, 8-12 parts of fatty acid, 0.5-0.8 part of antifoamer, 15-25 parts of potassium aminopropylsilicate, 5-10 parts of sodium octylsilicate, 5-8 parts of sodium benzoate, 3-5 parts of benzotriazole and 5-8 parts of methylbenzotriazole. The engine coolant provided by the invention is stable in formula, has long-acting bacteriostasis and anti-corrosion capability, is free of high-pollutional substances, cannot cause pollution to environments, has a very good corrosion inhibition action and can be used for effectively protecting engines.

Description

technical field [0001] The invention belongs to the technical field of chemical combination, in particular to an engine coolant. Background technique [0002] Most of the engine coolants used in the market are aqueous solutions of ethylene glycol, and water is used as the main cooling medium to take away the heat during fuel combustion; however, the freezing point of water is relatively high, so ethylene glycol is used to lower the freezing point of the coolant; at the same time In order to ensure that the metal parts of the engine cooling system are not corroded by the coolant during use, various corrosion inhibitors are usually added to the coolant. [0003] There are many types of coolants currently on the market, and one of the major shortcomings of the silicate formula is poor stability, and it is easy to form gel precipitation during storage. In order to make the cooling liquid formula containing silicates have good stability, many people have done a lot of work. The ...

AI Technical Summary

Problems solved by technology

[0003] There are many types of coolants currently on the market, and one of the major shortcomings of the silicate formula is poor stability, and it is easy to form gel precipitation during storage

In order to make the cooling liquid formula containing silicates have good stability, many people have done a lot of work. The high price of ethylene glycol cooling liquid makes the cost of engine cooling expensive. Another cooling medium that can effectively reduce the freezing point of the coolant without affecting the corrosion inhibition performance is to use propylene glycol as a substitute for ethylene glycol. However, the main defect of propylene glycol is that its thermal conductivity is low, which is not as good as that of ethylene glycol.