Engine coolant

Abstract

The invention discloses an engine coolant. The engine coolant comprises the following components: ethylene glycol, an anti-scaling dispersant, hexamethylenetetramine, an antifoaming agent, a pH valuebuffer agent and an organic pigment, with the balance being deionized water. The anti-scaling dispersing agent in the formula can be selected from any one or a mixture of polyepoxysuccinic acid and polyaspartic acid in any proportion; sodium citrate and the like are adopted as the pH regulator, so the pH value of the formulated product can be effectively controlled; meanwhile, the polyepoxysuccinic acid and other efficient anti-scaling dispersing agents are added, so the engine coolant has excellent scale and corrosion inhibition performance and has an obvious corrosion inhibition effect on various materials such as cast aluminum; the use period of the engine coolant can be prolonged and the use cost of the engine coolant is effectively reduced; and meanwhile, the engine coolant has both gas-phase corrosion inhibition and liquid-phase corrosion inhibition components and is beneficial for protection of a locomotive engine.

Description

technical field [0001] The invention belongs to the technical field of cooling fluid, and in particular relates to an engine cooling fluid. Background technique [0002] Engine coolant is an important part of the engine coolant system, and its main components are water and ethylene glycol. Most ordinary antifreeze fluids contain a large amount of alkaline substances, which will form insoluble carbonates, sulfates or oxides after heating and evaporation, which will adhere to the metal surface inside the engine radiator and easily cause scaling of the engine cooling system. It is often impossible to clean it regularly, which seriously affects the heat dissipation function of the cooling system, causing the engine to boil, water shortage, etc., and in serious cases, it will cause the cylinder head and cylinder block to rupture. At the same time, because ethylene glycol contacts with air under high temperature conditions during use, it will slowly oxidize to produce acidic subs...

AI Technical Summary

Problems solved by technology

CN109652024A discloses a kind of antifreeze agent 85~95wt%, corrosion inhibitor 0.6~1.5wt%, bactericide 0.8~1.2wt%, film forming agent 0.5~1.5wt%, pH value adjusting agent 0.2~0.8wt%. Foaming agent 0.001~0.005wt%, coloring agent 0.001~0.01wt%, the balance of deionized water composition of heavy-duty engine coolant, better solve the defect of silicate insufficient solder protection, overcome the coolant cavitation corrosion Disadvantages of poor protection

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