A low-temperature heat transfer medium with the function of inhibiting the formation of deposits, its preparation method and application

Abstract

The invention relates to the technical field of low temperature heat transfer medium, in particular to a low temperature heat transfer medium with the function of inhibiting the formation of deposits, a preparation method and application thereof. The invention provides a low-temperature heat transfer medium with the function of inhibiting the formation of deposits, which comprises the following components: water-soluble alcohol, organic acid corrosion inhibitor, triazole corrosion inhibitor, dispersant, pH adjuster and defoamer. The low-temperature heat transfer medium of the present invention is a composite corrosion inhibitor formed by compounding an organic carboxylic acid type corrosion inhibitor and a triazole type corrosion inhibitor, which is copper, brass, steel, iron, cast aluminum, solder, etc. in the heat transfer system. Metal provides excellent anti-corrosion protection; at the same time, it has excellent properties of inhibiting deposit formation and adsorption, preventing deposits from clogging the cooling system, helping to maintain the normal operation of the cooling system and prolonging the service life of low-temperature heat transfer media; and does not contain borax , molybdate, nitrite, phosphate and other inorganic salt components and organic amines, the harm to the environment and human body is small.

Description

technical field [0001] The invention relates to the technical field of low-temperature heat-transfer medium, in particular to a low-temperature heat-transfer medium with the function of inhibiting deposit formation, its preparation method and application. Background technique [0002] The low-temperature heat transfer medium is usually composed of a small molecule alcohol antifreeze miscible with water and compounded with functional additives such as corrosion inhibitors, defoamers, and coloring agents. Compared with pure water as a heat transfer medium, it has better antifreeze performance and a higher boiling point. With the advantages of low corrosion, it is usually used in water-cooled cooling systems of central air conditioners, internal combustion engines, split solar water heaters, and converters for power electronic devices. [0003] The low-temperature heat transfer medium is in contact with metal materials such as steel, cast iron, solder, copper, brass, and cast a...

AI Technical Summary

Problems solved by technology

Among them, organic acid corrosion inhibitors have gradually become the main corrosion inhibitors used in low-temperature heat transfer media such as engine coolants due to their advantages such as low environmental hazards, slow degradation rate, and long service life. However, organic acid corrosion inhibitors have a long-term During use, due to its own degradation, crystallization, adsorption, and interaction with calcium, magnesium, and various metal corrosion ions, deposits with complex components are formed in the cooling system. These deposits are adsorbed on radiator pipes, water cooling Substrates, filters and other components cause partial blockage of the cooling system, reduced flow of heat transfer medium, and excessive temperature rise of the system

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