Synthetic additive type long-acting antifreezing cooling liquid and preparation method thereof

Abstract

The invention belongs to the technical field of automobile antifreeze cooling liquids, and particularly relates to a synthetic additive type long-acting antifreeze cooling liquid, which comprises thefollowing components in parts by weight: 42-76 parts of ethylene glycol, 8-15 parts of glycerol, 3-10 parts of an organic composite additive, 2-4 parts of triethanolamine, 0.01-0.03 part of sodium benzoate, 1-3 parts of adipic acid, 2-5 parts of sebacic acid, 0.001-0.05 part of a special pigment and 10-30 parts of water. The preparation method comprises the following steps: S1, deionized water, the ethylene glycol and the glycerol are added into a main tank, are heated in a 60-70 DEG C water bath for 15-30 min, and the rotating speed is 90-110 r / min; S2, the organic composite additive, the triethanolamine, the special pigment and deionized water are into an auxiliary tank for uniformly stirring at 90-110 r / min; S3, a mixed solution obtained by the S2, the sodium benzoate, the adipic acid and the sebacic acid is added into the mixed solution obtained by the S1, and heating is performed in a 60-70 DEG C water bath for 15-20min at a rotating speed of 300-500 r / min to obtain the syntheticadditive type long-acting antifreeze cooling liquid. According to the method, various components are matched with each other and act synergistically, so the the freezing point and the boiling point ofthe synthetic additive type long-acting antifreeze cooling liquid reach ideal ranges, and the synthetic additive type long-acting antifreeze cooling liquid has long-term corrosion inhibition capability.

Description

technical field [0001] The invention belongs to the technical field of antifreeze coolant for automobiles, in particular to a synthetic additive type long-acting antifreeze coolant and a preparation method thereof. Background technique [0002] In recent years, with the development of the automobile industry and the rapid development of automobile engine technology, the antifreeze coolant is greatly affected by the composition and materials of the automobile engine, and the requirements for antifreeze are becoming increasingly stringent. In addition, the engine power of modern automobiles increases and the water tank and radiator become increasingly smaller, the amount of antifreeze coolant decreases, and the heat exchange area decreases, resulting in an increase in the temperature and cycle times of the engine antifreeze coolant, thus requiring antifreeze coolant Provides durable high temperature corrosion resistance. [0003] As we all know, the automobile engine coolant ...

AI Technical Summary

Problems solved by technology

[0004] The overall performance of antifreeze coolant products currently on the market is still not ideal. In order to ensure that the metal parts of the engine cooling system are not corroded by the coolant during use, nitrates, nitrites, and borates are usually added to the coolant. , silicate, phosphate and other traditional inorganic salt corrosion inhibitors to ensure that copper, steel, solder, cast iron and other materials in the cooling system are not corroded and can be used for a long time; but these are harmful substances to the human body and the environment , and it is easy to cause metal corrosion, corrode the metal parts of the engine cooling system, the formula stability is poor, and over time these traditional inorganic salt corrosion inhibitors are easy to combine with calcium and magnesium ions in hard water to form scaling and precipitation, affecting heat dissipation The heat dissipation efficiency of the radiator and the working stability of the engine; when there is a lot of precipitation, it will block the entire cooling circulation system

Some corrosion inhibitors such as silicate are also less stable at low temperatures, and are prone to precipitation and precipitation, which affects the anti-corrosion effect

[0005] Check the existing patents of most of the domestic antifreeze coolants, basically all adopt traditional inorganic salt corrosion inhibitors or supplemented by inorganic salt corrosion inhibitors with a small amount of organic corrosion inhibitors, such as CN 104804713 A, CN 101955755 A, CN01131412.5, although this type of product has a certain corrosion protection effect, but after a long time, especially for cast aluminum metal, after contacting with aluminum metal, the aluminum will change color and blacken, and the protective effect on aluminum in the cooling system is relatively Poor, hard to fit all-aluminum engines, and poor cavitation protection for automotive engine liners

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