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Long-acting liquid coolant not containing ethylene glycol

A technology of coolant and ethylene glycol, which is applied in the field of coolant, can solve the problems of large volume of cooling system, poor thermal conductivity, and influence on equipment appearance design, etc., and achieve good thermal conductivity, good corrosion resistance, and low toxicity level.

Inactive Publication Date: 2008-12-10
黄永红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the disadvantage of the above coolants is that the thermal conductivity is poor, which makes the cooling system larger and affects the appearance design of the equipment equipped with the cooling system.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the present embodiment, the long-term coolant without ethylene glycol is at normal temperature and pressure, with 79Kg of 1, the Chinese patent with the publication number of No. 1444636 discloses a non-toxic ethylene glycol-based antifreeze / Heat transfer fluid concentrates and antifreeze / heat transfer fluids, the antifreeze / heat transfer fluid compositions comprising: (a) ethylene glycol; (b) antidote for ethylene glycol poisoning, at atmospheric pressure above about 150°C ; (c) water. The Chinese patent No. 1507485 filed on August 23, 2001 by U.S. Evans Cooling Systems Company discloses a glycol-based antifreeze / heat transfer fluid concentrate and antifreeze / heat transfer fluid with reduced toxicity A fluid whose antifreeze / heat transfer fluid composition comprises: (a) ethylene glycol; (b) a boiling point greater than about 150°C, which acts as an alcohol dehydrogenase enzyme inhibitor; (c) water.

[0021] In order to solve the problem of the toxicity of ethylen...

specific Embodiment approach

[0034] The effects of the present invention are described below with specific embodiments, and the performance of the examples is shown in Table 1.

[0035] Example 1

[0036] In this embodiment, the long-term coolant without ethylene glycol is to pour 79Kg of 1,2 propylene glycol and 10Kg of ethyl carbitol into the container at normal temperature and pressure, and then add 5Kg of It is prepared by fully stirring benzotriazole, 5Kg of sodium benzoate and 1Kg of sodium molybdate.

Embodiment 2

[0038] In this embodiment, the long-term coolant without ethylene glycol is to pour 69Kg of 1,2 propylene glycol and 20Kg of ethyl carbitol into the container at normal temperature and pressure, and then add 5Kg of It is prepared by fully stirring benzotriazole, 5Kg of sodium benzoate and 1Kg of sodium molybdate.

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Abstract

The present invention discloses a glycol-free long-life coolant, comprising the following compositions:(a) polyhydric alcohol, which is 1,2 propylene glycol, glycerol or a mixture of the two, with a boiling point of above 150 DEG C;(b) a viscosity ratio heat regulation agent, which is ethyl carbitol; and (c) at least one anticorrosive additive, which is soluble in propylene glycol, glycerol or the mixture of the two. The glycol-free coolant has good conductive performance and a long life resulting from due to the long-lasting use of the anticorrosive additive. Therefore, the glycol-free coolant can be used as a coolant for internal combustion engines of a variety of automobiles, trains, airplanes, watercrafts and power sets, electric power or electronic assemblies, etc.

Description

technical field [0001] The invention relates to a cooling liquid, in particular to a long-term cooling liquid without ethylene glycol. Background technique [0002] Coolant is used as a coolant, not only as a coolant for engines such as automobiles, trains, airplanes, ships, and generator sets, but also as a coolant for electric power or electronic components. [0003] Existing engine coolants generally use water as the main heat removal fluid, and ethylene glycol is added to the water to account for 30%-70% of the volume of the cooling fluid. Since this alcohol-water mixture is easy to generate acidic substances during use, it will corrode the metal parts of the engine cooling system, so metal corrosion inhibitors must be added, and the most commonly used corrosion inhibitors are nitrite and phosphate. The additives in the existing cooling liquid formula also include defoamers, dyes, scale inhibitors, surfactants and chelating agents, etc., usually composed of 5-15 differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
Inventor 黄永红
Owner 黄永红
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