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Antifreezing fluid and preparation method thereof

A technology of antifreeze and antifreeze, applied in the direction of chemical instruments and methods, heat exchange materials, etc., can solve the problems of not intuitively pointing out antifreeze, not in-depth study of the influence of colorant on the cooling system, etc., to achieve high boiling point, high The effect of reserve alkalinity and stabilize PH value

Active Publication Date: 2015-04-08
GUANGDONG SANVO CHEM IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patents focused on the anti-corrosion performance of antifreeze, reserve alkalinity, anti-boiling, anti-freezing or precipitation, etc., but did not study the influence of colorants on the cooling system in depth, and did not intuitively point out how to judge that the anti-freeze has deteriorated. Remind users to replace with new antifreeze

Method used

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  • Antifreezing fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the formula weight ratio, add 17 parts of ethylene glycol and 3 parts of triethylene glycol into the reaction tank, and add 78 parts of deionized water, 0.05 parts of DF-830, and 5.0 parts of TF-SNA to compound agent, 1.0 parts of sodium benzoate, 2.4 parts of KRB-3B neutral rust remover and 0.2 parts of p-phenylenediamine anti-aging agent, and then add 0.2 parts of phosphate and 0.3 parts of oxalic acid after the dispersion is uniform. The pH of the system is 8.5. Finally, add 0.02 parts of ultraviolet photochromic powder and 0.1 parts of cresol red, and the antifreeze is prepared after uniform dispersion.

Embodiment 2

[0041]Add 40 parts of ethylene glycol, 6 parts of 1,2-propanediol and 6 parts of tripropylene glycol into the reaction tank according to the weight ratio of the formula. While stirring, add 47 parts of deionized water, 0.1 part of CF-190, 3.5 1 part of TF-SB compound agent, 0.8 part of sodium benzoate, 1.5 part of EVAPO-RUST rust remover and 0.8 part of p-phenylenediamine anti-aging agent, after dispersing evenly, add 0.1 part of sodium hydroxide and 0.5 part of sebacic acid, the system The pH is 8.2, and finally add 0.05 parts of ultraviolet photochromic powder and 0.2 parts of neutral red, and the antifreeze is prepared after uniform dispersion.

Embodiment 3

[0043] Add 65 parts of ethylene glycol, 12 parts of 1,2-propanediol and 15 parts of dipropylene glycol into the reaction tank according to the weight ratio of the formula, add 0 parts of deionized water, 0.2 parts of DF-830, 2 Part of TF-SNA compound agent, 0.5 part of sodium benzoate, 0.3 part of KRB-3B neutral rust remover and 1.0 part of p-phenylenediamine anti-aging agent, and then add 0.3 part of phosphate, 0.4 part of oxalic acid, 0.3 parts of sebacic acid, the pH of the system is 9.0, and finally add 0.1 parts of ultraviolet photochromic powder and 0.2 parts of neutral red, and the anhydrous antifreeze is prepared after uniform dispersion.

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Abstract

The invention discloses an antifreezing fluid and a preparation method thereof. The antifreezing fluid is mainly composed of an antifreezing agent, a colorant, a corrosion inhibitor, a pH regulator, a defoaming agent, a mold preventive, a deruster, an anti-aging agent and water. By adopting the acid-base indicator as part of the colorant, when the pH value of the antifreezing fluid is smaller than or equal to 7.5, the color of the antifreezing fluid changes. By adding the ultraviolet photochromic powder, the color of the antifreezing fluid changes after the antifreezing fluid under sunlight / ultraviolet irradiation absorbs the energy of the sunlight / ultraviolet light (colorless to colored), thereby effectively preventing the cooling system from being colored by the colorant. By adding the anti-aging agent and deruster, the antifreezing fluid not only has the function of decelerating swelling and aging of the rubber, but also has the functions of cleaning and derusting the oxidized metal. The antifreezing fluid has high reserve alkalinity, thereby being beneficial to stabilizing the pH value of the antifreezing fluid. The antifreezing fluid has high boiling point, thereby preventing the phenomenon of boiling of the cooling system in summer.

Description

technical field [0001] The invention relates to a water-based antifreeze containing a special additive with a boiling point higher than 100°C, which is mainly used in a liquid-cooled engine cooling system, and in particular to an antifreeze and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, people pay more and more attention to car care. Vehicles will generate a lot of heat during operation. The boiling point of water is 100°C. If it is used as a circulating cooling medium to assist the engine to dissipate heat, it cannot effectively prevent the cooling system from "boiling"; when the temperature is lower than 0°C, the water will freeze. Ice, the volume becomes larger, it is easy to expand and crack the radiator and freeze the engine cylinder block, and the engine cannot start normally; the water does not have anti-corrosion and anti-scaling functions, which is not conducive to protecting the engine cooling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 陈炳耀凌辉郑吕凤
Owner GUANGDONG SANVO CHEM IND TECH
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