Low-conductivity cooling liquid and preparation method thereof

A cooling liquid and low-conductivity technology, applied in the petroleum industry, lubricating compositions, etc., can solve problems such as poor stability, and achieve the effects of preventing corrosion, inhibiting hydrolysis, and inhibiting the occurrence of hydrolysis reactions

Active Publication Date: 2019-05-17
中国船舶集团有限公司第七一八研究所
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AI Technical Summary

Problems solved by technology

Due to the poor stability of organosilicon compounds, there is no report to use them as coolant corrosion inhibitors

Method used

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  • Low-conductivity cooling liquid and preparation method thereof
  • Low-conductivity cooling liquid and preparation method thereof
  • Low-conductivity cooling liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The organosilicon compounds used in the following examples and comparative examples are all products of Dow Corning Co., Ltd., 5-methoxyuracil is a product of Ruierfeng Chemical Co., Ltd., and 4-amino-5-imidazole carboxamide is a product of Shanghai Jiangzhou Chemical Co., Ltd. The company's products, methyl benzotriazole is a product of Nantong Kanghua Chemical Co., Ltd., and N-lauroyl sarcosine is a product of Beijing Bailingwei Technology Co., Ltd.

[0028] Each component and its mass percentage in Examples 1-6 and Comparative Examples are shown in Table 1.

[0029] Table 1

[0030]

[0031] The preparation method of the cooling liquid described in Examples 1-6 is: mix the organosilicon compound, the nitrogen-containing compound and the azole compound evenly, then add it to the glycol, stir at room temperature for more than 20 minutes, and finally add deionized water and stir evenly , to obtain a low-conductivity coolant.

[0032] The preparation method of the c...

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Abstract

The invention relates to a low-conductivity cooling liquid and a preparation method thereof, and belongs to the field of chemical engineering. The total mass of each component in a cooling liquid formula is 100%, and the low-conductivity cooling liquid is prepared from the components in percentage by mass: 30-80% of dihydric alcohol, 0.05-5.0% of organosilicon compound, 0.01-2.0% of nitrogen-containing compound, 0-1.0% of azole-based compound and the balance of deionized water. The organosilicon compound, the nitrogen-containing compound and the azole-based compound are uniformly mixed and then added into the dihydric alcohol for normal temperature stirring for more than 20min, and finally the deionized water is added for uniform mixing to obtain the low-conductivity cooling liquid. The low-conductivity cooling liquid has good effect of corrosion inhibition on a multi-metal system, has better storage and using stability, and can be used for cooling and heat exchanging of fuel cells, electric automobile motors and wind power generators.

Description

technical field [0001] The invention relates to a low-conductivity cooling liquid and a preparation method thereof, belonging to the field of chemical industry. Background technique [0002] New energy vehicles and wind turbines have strict requirements on the conductivity of coolant due to their "electric and magnetic" characteristics. Fuel cells require the conductivity of the coolant to be less than 10μs / cm, and electric vehicles and wind turbines generally require the conductivity of the coolant to be less than 400μs / cm. The conductivity of ordinary coolant is generally greater than 2000μs / cm, which will generate a large induced current when used in new energy vehicles and wind turbines, which is prone to flashover between phases of the motor and also produces a large leakage current. Accident hazards in normal operation. [0003] Most of the existing low-conductivity cooling liquid research uses nitrogen-containing compounds as corrosion inhibitors. CN102174313B discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M171/00C10M173/00C10N30/12
Inventor 王峰刘保锋姜燕蔡淑红刘波涛苏玲燕李杰谭凯锋侯锦锋商轶
Owner 中国船舶集团有限公司第七一八研究所
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