Automobile antifreeze and preparation method thereof

A technology for automobiles and formulations, which is applied in the field of antifreeze for automobiles and its preparation, which can solve the problems of precipitation, uneconomical, low temperature resistance, etc., and achieve the effects of simple production process, extended service life, and strong low temperature resistance

Pending Publication Date: 2016-11-02
西安昕罗新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two types of antifreeze produced in China: ethanol-water type, which has a high anti-freezing point and is unsafe to catch fire; glycerin-water type, which is expensive and uneconomical. And most antifreeze generally use ethylene glycol as the main component
The disadvantages are as follows: (1) organic preservatives are easily acidified at a temperature of 80 ° C, and cause corrosion to the automobile water tank circulation pump and engine block; (2) not resistant to low temperatures, ethylene glycol antifreeze It is not applicable at low temperature of -40℃; (3) not environmentally friendly, flammable and explosive; (4) short service life, prone to precipitation

Method used

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  • Automobile antifreeze and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] Antifreeze for automobiles, the basic raw materials are dimethyl sulfoxide and deionized water, and the respective weight percentages are as follows:

[0028] Dimethyl sulfoxide 35%;

[0029] Water 50%.

[0030] Described automobile antifreeze, take base raw material as 100% quality basis, the weight percent of other batching that adds is as follows:

[0031] Triethanolamine 0.2%;

[0032] Sebacic acid 0.65%;

[0033] Sodium phosphite 0.30%;

[0034] Defoamer 0.08%;

[0035] Flame retardant 0.1%;

[0036] Additive 0.5%;

[0037] Pigment 0.002%.

[0038] The preparation of the flame retardant: by weight, 1% ammonium dihydrogen phosphate, 1% potassium hypophosphite, and 1% sodium phosphite were added to 90% water respectively, stirred and heated to boiling, and kept for 20 minutes. Then cool to room temperature.

[0039] The water needs to be preheated to 50°C.

[0040] The water is deionized water.

[0041] The preparation method of described automobile antifr...

Embodiment 2

[0046] Antifreeze for automobiles, the basic raw materials are dimethyl sulfoxide and deionized water, and the respective weight percentages are as follows:

[0047] Dimethyl sulfoxide 45%;

[0048] Water 50%.

[0049] Described automobile antifreeze, take base raw material as 100% quality basis, the weight percent of other batching that adds is as follows:

[0050] Triethanolamine 0.2%;

[0051] Sebacic acid 0.8%;

[0052] Sodium phosphite 0.5%;

[0053] Defoamer 0.1%;

[0054] Flame retardant 1%;

[0055] Additives 3%;

[0056] Color 0.005%.

[0057] The preparation of the flame retardant: by weight, 3% ammonium dihydrogen phosphate, 3% potassium hypophosphite, and 4% sodium phosphite were added to 95% water respectively, stirred and heated to boiling, and kept for 20 minutes. Then cool to room temperature.

[0058] The water needs to be preheated to 50°C.

[0059] Described water is distilled water.

[0060] The preparation method of described automobile antifree...

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Abstract

The invention relates to an antifreeze liquid for automobiles and a preparation method thereof. The basic raw materials of the antifreeze liquid for automobiles are dimethyl sulfoxide and deionized water, and the respective weight percentages are as follows: dimethyl sulfoxide 35% to 50%; water 50-70%; the antifreeze fluid for automobiles also includes some ingredients. Compared with the prior art, the present invention uses dimethyl sulfoxide instead of ethylene glycol to produce antifreeze, which has strong low temperature resistance; at the same time, due to the added flame retardant function, the antifreeze that is easy to catch fire is safer in use; A variety of high-efficiency corrosion inhibitors added can fully meet the requirements of antifreeze and anticorrosion, and have strong protection functions for various metals in the engine cooling system, which can greatly prolong the service life of the engine; moreover, the production process is simple.

Description

technical field [0001] The invention belongs to the technical field of antifreeze liquid for automobiles, and in particular relates to antifreeze liquid for automobiles and a preparation method thereof. Background technique [0002] Antifreeze, also known as protective fluid or engine coolant, is the circulating medium used in the cooling system of automobile engines. It utilizes the circulating flow of coolant to extract heat and protect the normal operation of the engine. Therefore, in addition to containing the lowest possible freezing point and additives, the antifreeze fluid for automobiles must also have a high boiling point to prevent corrosion of the cooling system and reduce scale. At present, there are two types of antifreeze produced in China: ethanol-water type, which has a high anti-freezing point and is unsafe to catch fire; glycerin-water type, which is expensive and uneconomical. And most antifreeze generally use ethylene glycol as the main component. The d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
Inventor 宋彤彤
Owner 西安昕罗新能源科技有限公司
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