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Efficient corrosion-resistant motor vehicle antifreeze fluid and preparation method thereof

An automotive antifreeze and antifreeze technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problem that the antifreeze performance, thermal stability and corrosion resistance stability of the antifreeze cannot meet the requirements, the thermal conductivity of the engine is decreased, and the cooling The tube part is easy to block and other problems, so as to shorten the mixing and dissolving time, inhibit corrosion, and avoid oxidative deterioration.

Inactive Publication Date: 2017-01-25
金嵩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, more than 95% of the water-based antifreeze fluids using ethylene glycol at home and abroad, ethylene glycol will not cause obvious corrosion of materials at room temperature, but when the temperature rises, ethylene glycol will be oxidized, which will increase the acidity and produce various Corrosive substances: The precipitation of these corrosive substances causes the thermal conductivity of the engine to decrease, resulting in the easy blockage of the cooler tube, causing the engine to overheat
[0004] With the development of the automobile industry, the performance requirements of the engine are getting higher and higher. The antifreeze performance, thermal stability and corrosion resistance stability of the commonly used antifreeze fluids can no longer meet the requirements. Therefore, it is necessary to develop efficient anti-corrosion performance. car antifreeze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] High-efficiency anti-corrosion antifreeze for automobiles, composed of the following components by mass percentage: 50% ethylene glycol, 15% glycerol, 0.1% benzotriazole, 0.5% sodium pentachlorophenate, and 0.5% sodium salicylate , acrylic acid 1.5%, rare earth salt 0.01%, defoamer 0.01%, dye 0.005%, deionized water as the balance.

[0014] The preparation steps of the above-mentioned automobile antifreeze are as follows:

[0015] (1) take each component according to mass percentage;

[0016] (2) Mix and dissolve deionized water, ethylene glycol, glycerin, rare earth salts, defoamers and dyes, raise the temperature to 25°C, and after the mixed solution is clarified, add other components, fully stir, mix and dissolve;

[0017] (3) The temperature of the mixed solution obtained in step (2) is raised to 50° C., and the mixture is kept at a vacuum of 0.02 MPa for 45 minutes to obtain an automobile antifreeze solution.

Embodiment 2

[0019] High-efficiency corrosion-resistant antifreeze for automobiles, composed of the following components by mass percentage: 55% ethylene glycol, 20% glycerin, 0.12% benzotriazole, 1% sodium pentachlorophenate, and 0.75% sodium salicylate , acrylic acid 1.75%, rare earth salt 0.05%, defoamer 0.05%, dye 0.008%, deionized water as the balance.

[0020] The preparation steps of the above-mentioned automobile antifreeze are as follows:

[0021] (1) take each component according to mass percentage;

[0022] (2) Mix and dissolve deionized water, ethylene glycol, glycerin, rare earth salts, defoamers and dyes, raise the temperature to 30°C, and after the mixed solution is clarified, add other components, fully stir, mix and dissolve;

[0023] (3) The temperature of the mixed solution obtained in step (2) is raised to 55° C., and the mixture is kept at a vacuum of 0.025 MPa for 55 minutes to obtain an automobile antifreeze solution.

Embodiment 3

[0025] High-efficiency corrosion-resistant antifreeze for automobiles, composed of the following components by mass percentage: 60% ethylene glycol, 25% glycerol, 0.15% benzotriazole, 1.5% sodium pentachlorophenate, and 1% sodium salicylate , acrylic acid 2%, rare earth salt 0.1%, defoamer 0.04%, dye 0.01%, deionized water as the balance.

[0026] The preparation steps of the above-mentioned automobile antifreeze are as follows:

[0027] (1) take each component according to mass percentage;

[0028] (2) Mix and dissolve ethylene glycol, rare earth salts, defoamers and dyes, raise the temperature to 60°C, and after the mixed solution is clarified, add deionized water and other components, fully stir, mix and dissolve;

[0029] (3) The temperature of the mixed solution obtained in step (2) is raised to 60° C., and the mixture is kept at a vacuum of 0.03 MPa for 60 minutes to obtain an automobile antifreeze solution.

[0030] Table 1 Basic performance test of antifreeze

[003...

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PUM

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Abstract

The invention discloses an efficient corrosion-resistant motor vehicle antifreeze fluid and a preparation method thereof. The anti-freezing fluid is prepared from the following components in percentage by mass: 50-60% of ethylene glycol, 15-25% of glycerol, 0.1-0.15% pf benzotriazole, 0.5-1.5% of sodium pentachlorophenol, 0.5-1% of soldium salicylate, 1.5-2% of propenoic acid, 0.01-0.1% of rare-earth salt, 0.01-0.01% of an anti-foaming agent, 0.005-0.01% of a dye and the balance of deionized water. The preparation method comprises the following steps: dissolving deionized water, ethylene glycol, glycerol, rare-earth salt, the anti-foaming agent and the dye in a mixed mode; heating to 25-35 DEG C; adding other components till the mixed solution is clarified; fully stirring and dissolving in a mixed mode; heating to 50-60 DEG C; insulating for 45-60 minutes under the condition that the vacuum degree is 0.02-0.03 MPa. The efficient corrosion-resistant motor vehicle antifreeze fluid provided by the invention has the characteristics of low freezing point, high boiling point and strong anticorrosive property, and can meet the using requirements of automobiles under different environment conditions.

Description

technical field [0001] The invention belongs to the technical field of automobile protective articles and its preparation, in particular to high-efficiency corrosion-resistant automobile antifreeze and its preparation method. Background technique [0002] Coolant, also known as antifreeze, is a liquid composed of antifreeze additives, additives to prevent metal from rusting, and water. It needs to have antifreeze, corrosion resistance, thermal conductivity and non-deteriorating properties. Automobile antifreeze is a high-efficiency corrosion-resistant coolant containing special additives. It is mainly used in liquid-cooled engine cooling systems. [0003] The engine cooling system of an internal combustion vehicle is a liquid-cooled closed circulation system composed of a cylinder, a jacket and a water tank. The working state of the cooling system directly affects the normal operation of the vehicle and the service life of the vehicle. Antifreeze is the cooling medium of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20C23F11/14
CPCC09K5/20C23F11/149
Inventor 金嵩
Owner 金嵩
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