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High-temperature corrosion-resistant fuel cell engine antifreeze and preparation method thereof

A fuel cell and antifreeze technology, which is applied in the field of antifreeze, can solve the problems of difficulty in meeting the requirements of fuel cell vehicles, shorten the service life of fuel cells, damage fuel cell stacks, etc., and achieve low electrical conductivity, low freezing point, and slow down oxidation. Effect

Inactive Publication Date: 2019-07-26
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there are a large number of ions in the traditional antifreeze, the flow of these large amounts of ions will increase the conductivity of the antifreeze, thus causing a short circuit of the engine; and there may be Cl in the traditional antifreeze - Plasma, which will corrode 316L stainless steel, damage the fuel cell stack, and shorten the service life of the fuel cell
Many existing antifreeze fluids have the above disadvantages, and it is difficult to meet the requirements of normal operation of fuel cell vehicles

Method used

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  • High-temperature corrosion-resistant fuel cell engine antifreeze and preparation method thereof
  • High-temperature corrosion-resistant fuel cell engine antifreeze and preparation method thereof
  • High-temperature corrosion-resistant fuel cell engine antifreeze and preparation method thereof

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Embodiment 1

[0032] A high-temperature corrosion-resistant fuel cell engine antifreeze of this embodiment, said antifreeze is composed of the following components in mass percentage:

[0033] Ethylene glycol 98.5wt%; Additive 1.5wt%; Wherein the additive is 1,8-diazacyclo[5,4,0]undecene-70.2wt%, N-methyl-N-(trimethylsilane base) 0.2wt% of trifluoroacetamide, 0.2wt% of 3-methylindole, 0.2wt% of dipyridamole, 0.3wt% of coco-based monoethanolamide polyoxyethylene ether, and 0.4wt% of polyacrylamide.

[0034] The above-mentioned antifreeze of the present embodiment adopts following method to make, comprises the steps:

[0035] Put ethylene glycol into the reaction kettle according to the above ratio, and then successively add 1,8-diazacyclo[5,4,0]undecene-7,N-methyl-N-(trimethylsilyl ) trifluoroacetamide, 3-methylindole, dipyridamole is added in the reaction kettle, adopts ultrasonic vibration 30min to make above raw material directly dissolve in the ethylene glycol at room temperature, after...

Embodiment 2

[0038] A high-temperature corrosion-resistant fuel cell engine antifreeze of this embodiment, said antifreeze is composed of the following components in mass percentage:

[0039] Ethylene glycol 98.8wt%, additive 1.2wt%; wherein the additive is 1,8-diazacyclo[5,4,0]undecene-70.2wt%, N-methyl-N-(trimethylsilane Base) 0.2wt% of trifluoroacetamide, 0.16wt% of 3-methylindole, 0.04wt% of dipyridamole, 0.3wt% of coco-based monoethanolamide polyoxyethylene ether, and 0.3wt% of polyacrylamide.

[0040] The above-mentioned antifreeze of the present embodiment adopts following method to make, comprises the steps:

[0041]Put ethylene glycol into the reaction kettle according to the above ratio, and then successively add 1,8-diazacyclo[5,4,0]undecene-7,N-methyl-N-(trimethylsilyl ) trifluoroacetamide, 3-methylindole, dipyridamole is added in the reaction kettle, adopts ultrasonic vibration 30min to make above raw material directly dissolve in the ethylene glycol at room temperature, afte...

Embodiment 3

[0043] A high-temperature corrosion-resistant fuel cell engine antifreeze of this embodiment, said antifreeze is composed of the following components in mass percentage:

[0044] Ethylene glycol 99wt%, additive 1wt%; the additive is 1,8-diazacyclo[5,4,0]undecene-70.09wt%, N-methyl-N-(trimethylsilyl) 0.08wt% of trifluoroacetamide, 0.05wt% of 3-methylindole, 0.01wt% of dipyridamole, 0.3wt% of cocoyl monoethanolamide polyoxyethylene ether, and 0.47wt% of polyacrylamide.

[0045] The above-mentioned antifreeze of the present embodiment adopts following method to make, comprises the steps:

[0046] Put ethylene glycol into the reaction kettle according to the above ratio, and then successively add 1,8-diazacyclo[5,4,0]undecene-7,N-methyl-N-(trimethylsilyl ) trifluoroacetamide, 3-methylindole, dipyridamole is added in the reaction kettle, adopts ultrasonic vibration 30min to make above raw material directly dissolve in the ethylene glycol at room temperature, afterwards coco oil ba...

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Abstract

The invention provides a novel high-temperature corrosion-resistant fuel cell engine antifreeze. The high-temperature corrosion-resistant fuel cell engine antifreeze comprises, by weight, 98.5-99.5wt%of glycol and 0.5-1.5wt% of an additive, wherein the additive includes, by weight, 0.02-0.2wt% of 1,8-heterocyclic(5,4,0) undecene-7, 0.005-0.5wt% of N-methyl-N-(trimethylsilyl) trifluoroacetamide, 0.04-0.4wt% of 3-methyl indole, 0.05-0.5wt% of dipyridamole, 0.03-0.3wt% of alkanolamide polyoxylene ether and 0.05-0.5wt% of polyacrylamide. A new additive formula without using water is adopted as the substrate, the conductivity of the antifreeze is reduced, and the stainless steel is protected from corrosion at high temperature; the antifreeze is low in cost, simple in preparation process and suitable for fuel cell vehicles.

Description

technical field [0001] The invention relates to an antifreeze liquid, in particular to a high-temperature corrosion-resistant fuel cell engine antifreeze liquid and a preparation method thereof. Background technique [0002] In order to enable fuel cell vehicles to be used at low temperatures in winter and high temperatures in summer, an antifreeze that can prevent freezing in winter and prevent boiling in summer must be added to the engine (fuel cell stack) to protect the cooling system of the engine and improve the heat dissipation effect , improve engine efficiency. Because there are a large number of ions in the traditional antifreeze, the flow of these large amounts of ions will increase the conductivity of the antifreeze, thus causing a short circuit of the engine; and there may be Cl in the traditional antifreeze - Plasma, which will corrode 316L stainless steel, damage the fuel cell stack, and shorten the service life of the fuel cell. Many existing antifreeze flui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 邹文文张楠陈哲赵宏滨张久俊方建慧赵康宁叶代新
Owner SHANGHAI UNIV
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