Anti-freezing solution with high stability

Abstract

The invention discloses an anti-freezing solution with high stability, which comprises the following components in percentage by weight: 20-30 percent of isopropanol, 2-3 percent of dimethyl carbonate, 0.4-2.5 percent of sodium benzoate, 1-3 percent of benzotriazole, 5-8 percent of a polyurethane thinner, 10-12 percent of ethanol, 2-5 percent of ethyl oleate and the balance of deionized water. The anti-freezing solution adopts a phosphate-free formula system. According to the formula, sodium benzoate and organic acid are used cooperatively to protect metal together, and long-term metal corrosion resistance is provided with the aid of benzotriazole. The anti-freezing solution has a favorable addition effect on corrosion resistance of metal.

Description

technical field [0001] The invention relates to an antifreeze liquid, which belongs to the field of chemical industry, in particular to an antifreeze liquid with good stability. Background technique [0002] Antifreeze is a liquid with a low freezing point. The aqueous solution containing a certain amount of ethylene glycol will not freeze at low temperatures. It has good fluidity and can take away a large amount of heat generated by the engine during operation. It can be used all year round. Used in automobile antifreeze water cooling system, it has the advantages of anti-boiling, anti-corrosion, anti-scaling, anti-freezing, anti-evaporative loss, etc. According to the evaluation of the impact on the environment, the types of antifreeze can be divided into environmentally friendly pure organic acid antifreeze and low-grade inorganic salt antifreeze. Pure organic acid antifreeze is environmentally friendly and easy to biodegrade, but the cost of use is relatively high. Expe...

AI Technical Summary

Problems solved by technology

According to the evaluation of the impact on the environment, the types of antifreeze can be divided into environmentally friendly pure organic acid antifreeze and low-grade inorganic salt antifreeze. Pure organic acid antifreeze is environmentally friendly and easy to biodegrade, but the cost of use is relatively high. Expensive, so it has not been promoted in a large area in our country