Anti-corrosion anti-freezing liquid

Abstract

The invention discloses an anti-corrosion anti-freezing liquid which is composed of benzotriazole, polysorbate 80, a nonionic surface active agent, polymer salt, a heterocyclic compound, rare-earth salt, propylene glycol and glycerol. The concentration of the benzotriazole is 0.1-2.0g/L, the concentration of the polysorbate 80 is 1-5mg/L, the concentration of the nonionic surface active agent is 0.01-0.1g/L, the concentration of the polymer salt is 0.1-0.2g/L, the concentration of the heterocyclic compound is 0.05-0.15g/L, the concentration of the rare-earth salt is 0.01-0.1 g/L, the concentration of the propylene glycol is 150-500mg/L, and the concentration of the glycerol is 100-450mg/L. According to the anti-corrosion anti-freezing liquid, the propylene glycol and the glycerol with low viscosity are used as the anti-freezing liquid, heat exchanging effects are guaranteed, the stability is good, the anti-freezing liquid is environment-friendly, prior process flows are not destroyed, auxiliary devices are not required, the usage is convenient, the investment is small, and returns are fast.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, in particular to a corrosion-resistant antifreeze liquid that can take into account two different metals, aluminum alloy and carbon steel. Background technique [0002] Antifreeze is a coolant containing special additives, which has excellent properties such as antifreezing in winter and anti-boiling in summer. With the widespread application of solar water heaters, when the temperature is too low, an indirect system is usually used on the device to achieve the antifreeze effect, that is, a coil or jacket for heat exchange is installed on the main water tank, and the coil or jacket The connecting pipe is sealed and connected with the heat collector as a circulating piping system, and then antifreeze is added to the above closed circulating piping system. At present, more than 95% of the antifreezes at home and abroad use the water-based type of ethylene glycol. Ethylene gl...

AI Technical Summary

Problems solved by technology

According to research, rare earth is expected to become a substitute for chromate, and my country is the country with the most abundant rare earth mineral resources and a relatively complete variety in the world. However, pure rare earth is used as a corrosion inhibitor in a large amount, and the effect is not very stable.

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