An all-organic engine coolant

Abstract

The present invention relates to full organic-type engine cooling liquid. The full organic-type engine cooling liquid comprises the following raw material components in weight percentages: 30-97% of ethylene glycol, 0.2-10% of fatty carboxylic acid or alkali metal salts thereof, 0.01-1% of a triazole compound, 0.01-1.2% of alcohol ether phosphate, 0.01-2% of imidazole, 0.001-0.3% of a defoamer andthe balance deionized water. Compared with the prior art, the provided cooling liquid has good multi-metal anticorrosive performance to engines, does not contain nitrite, borate, nitrate, silicate and amine compounds, has little environmental pollution, improves the reserve stability and anti-hard water ability of the cooling liquid, solves problems of blackening of cast aluminum, cavitation corrosion, etc., and can ensure long-term operation of an engine cooling system.

Description

technical field

[0001] The invention relates to an engine coolant, in particular to an all-organic light-load engine coolant, which belongs to the technical field of chemical industry. Background technique

[0002] With the development of the automobile industry, in order to reduce the weight of the body and increase fuel economy, aluminum alloys are gradually used in the cooling system of automobile engines and other engine components, and the quality requirements for engine coolant are also getting higher and higher. Therefore, one of the research focuses on engine coolant is to prevent pitting corrosion and surface crevice corrosion of aluminum-magnesium alloys. At the same time, out of consideration for environmental protection and human beings, some countries and automobile manufacturers have put forward higher requirements on the composition and performance of the coolant, and the engine coolant contains ammonium salts, borates, and nitrous acid. Environmentally harmf...

Examples

Embodiment 1

[0038]The raw material components and their mass fractions are: ethylene glycol 86%, neodecanoic acid 1.2%, sebacic acid 1.5%, tolyltriazole 0.5%, triethylene glycol monobutyl ether phosphate 0.6%, Triethylene glycol monomethyl ether phosphate 0.2%, imidazole 0.8%, polyether defoamer 0.05%, potassium hydroxide to adjust the pH value to 8, the balance is deionized water, heat and stir until uniform and transparent, and then filter to obtain Coolant of the present invention.

Embodiment 2

[0040] The raw material components and their mass fractions are: ethylene glycol 78%, octanoic acid 1.8%, isononanoic acid 0.5%, suberic acid 0.5%, dodecanedioic acid 1.5%, benzotriazole 0.8%, diethyl 0.9% glycol monobutyl ether phosphate, 1.4% imidazole, 0.1% polyether defoamer, potassium hydroxide to adjust the pH value to 8, and the balance is deionized water, heat and stir until uniform and transparent, and then filter to obtain the present invention of coolant.

Embodiment 3

[0042] The raw material components and their mass fractions are: ethylene glycol 93%, nonanoic acid 0.5%, capric acid 1.3%, suberic acid 0.4%, benzotriazole 0.1%, tolyltriazole 0.2%, Triethylene glycol monobutyl ether phosphate 0.05%, diethylene glycol monomethyl ether phosphate 0.02%, imidazole 0.3%, polyether defoamer 0.2%, potassium hydroxide to adjust the pH value to 8, and the balance is deionized water, heated and stirred until uniform and transparent, and then filtered to obtain the cooling liquid of the present invention.

technical field

[0001] The invention relates to an engine coolant, in particular to an all-organic light-load engine coolant, which belongs to the technical field of chemical industry. Background technique

[0002] With the development of the automobile industry, in order to reduce the weight of the body and increase fuel economy, aluminum alloys are gradually used in the cooling system of automobile engines and other engine components, and the quality requirements for engine coolant are also getting higher and higher. Therefore, one of the research focuses on engine coolant is to prevent pitting corrosion and surface crevice corrosion of aluminum-magnesium alloys. At the same time, out of consideration for environmental protection and human beings, some countries and automobile manufacturers have put forward higher requirements on the composition and performance of the coolant, and the engine coolant contains ammonium salts, borates, and nitrous acid. Environmentally harmf...

Examples

Embodiment 1

[0038]The raw material components and their mass fractions are: ethylene glycol 86%, neodecanoic acid 1.2%, sebacic acid 1.5%, tolyltriazole 0.5%, triethylene glycol monobutyl ether phosphate 0.6%, Triethylene glycol monomethyl ether phosphate 0.2%, imidazole 0.8%, polyether defoamer 0.05%, potassium hydroxide to adjust the pH value to 8, the balance is deionized water, heat and stir until uniform and transparent, and then filter to obtain Coolant of the present invention.

Embodiment 2

[0040] The raw material components and their mass fractions are: ethylene glycol 78%, octanoic acid 1.8%, isononanoic acid 0.5%, suberic acid 0.5%, dodecanedioic acid 1.5%, benzotriazole 0.8%, diethyl 0.9% glycol monobutyl ether phosphate, 1.4% imidazole, 0.1% polyether defoamer, potassium hydroxide to adjust the pH value to 8, and the balance is deionized water, heat and stir until uniform and transparent, and then filter to obtain the present invention of coolant.

Embodiment 3

[0042] The raw material components and their mass fractions are: ethylene glycol 93%, nonanoic acid 0.5%, capric acid 1.3%, suberic acid 0.4%, benzotriazole 0.1%, tolyltriazole 0.2%, Triethylene glycol monobutyl ether phosphate 0.05%, diethylene glycol monomethyl ether phosphate 0.02%, imidazole 0.3%, polyether defoamer 0.2%, potassium hydroxide to adjust the pH value to 8, and the balance is deionized water, heated and stirred until uniform and transparent, and then filtered to obtain the cooling liquid of the present invention.

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