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Method for preparing anti-freezing type aqueous film forming foam extinguishing agent

A foam fire extinguishing agent and water film-forming technology, applied in fire protection equipment and other directions, can solve the problems of poor cold resistance and salt resistance, and achieve the effects of low cost, good antifreeze effect and simple process

Inactive Publication Date: 2016-11-09
上海汇友精密化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, my country has invested a lot of manpower and material resources to develop and produce AFFF3 and AFFF6 aqueous film-forming foam fire extinguishing agents, but they are mainly freshwater products, and there are defects such as poor cold resistance and salt resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of preparation method of antifreeze type aqueous film-forming foam fire extinguishing agent, it comprises the following steps:

[0018] (1) reaction, cocoic acid diethanolamide, sodium hydroxyethyl cellulose, amino acid, tetrafluoropropene, aluminum fluoride and ethanol are mixed, then reflux reaction at 80 ℃ for 2 hours, then distilled at 70 ℃, will Ethanol was distilled off, and the distillation residue was added to the extractant, mixed and stirred at 40°C, and then filtered, and the obtained filtrate was distilled under reduced pressure to obtain crystals.

[0019] (2) Mix and prepare, add water to the crystal in step (1), mix and stir until the crystal is completely dissolved, then add lauryl dimethyl ammonium bromide, sodium lauryl sulfate, sodium lauryl sulfate, poly A mixture of siloxane phosphate betaine amphoteric surfactant, then add antifreeze agent, chelating agent, polymer surfactant and foam stabilizer, then adjust the pH of the system at 10.5, and...

Embodiment 2

[0025] A kind of preparation method of antifreeze type aqueous film-forming foam fire extinguishing agent, it comprises the following steps:

[0026] (1) reaction, cocoic acid diethanolamide, sodium hydroxyethyl cellulose, amino acid, tetrafluoropropene, aluminum fluoride and ethanol are mixed, then reflux reaction at 85 ℃ for 2 hours, then distilled at 70 ℃, will Ethanol was distilled off, and the distillation residue was added to the extractant, mixed and stirred at 50°C, and then filtered, and the obtained filtrate was distilled under reduced pressure to obtain crystals.

[0027] (2) Mix and prepare, add water to the crystal in step (1), mix and stir until the crystal is completely dissolved, then add lauryl dimethyl ammonium bromide, sodium lauryl sulfate, sodium lauryl sulfate, poly A mixture of siloxane phosphate betaine amphoteric surfactant, then add antifreeze agent, chelating agent, polymer surfactant and foam stabilizer, then adjust the pH of the system to 10, mix a...

Embodiment 3

[0033] A kind of preparation method of antifreeze type aqueous film-forming foam fire extinguishing agent, it comprises the following steps:

[0034] (1) reaction, cocoic acid diethanolamide, sodium hydroxyethyl cellulose, amino acid, tetrafluoropropene, aluminum fluoride and ethanol are mixed, then reflux reaction at 70 ℃ for 3 hours, then distilled at 60 ℃, will Ethanol was distilled off, and the distillation residue was added to the extractant, mixed and stirred at 50°C, and then filtered, and the obtained filtrate was distilled under reduced pressure to obtain crystals.

[0035] (2) Mix and prepare, add water to the crystal in step (1), mix and stir until the crystal is completely dissolved, then add lauryl dimethyl ammonium bromide, sodium lauryl sulfate, sodium lauryl sulfate, poly A mixture of siloxane phosphate betaine amphoteric surfactant, then add antifreeze agent, chelating agent, polymer surfactant and foam stabilizer, then adjust the pH of the system at 9.5, mix ...

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PUM

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Abstract

The invention relates to a method for preparing an anti-freezing type aqueous film forming foam extinguishing agent. The method comprises: mixing coconut diethanolamide, hydroxyethyl cellulose sodium, amino acid, tetrafluoropropene, aluminum fluoride with ethyl alcohol, performing refluxing reaction for 1-5 hours at the temperature of 50-90 degrees centigrade, then distilling at 50-80 degrees centigrade to remove the ethyl alcohol, adding an extractant into the distillation residues, and mixing and stirring at 30-60 degrees centigrade, filtering the mixture to get the filter liquor, performing reduced pressure distillation on the filter liquor to obtain crystals, adding water into the crystals, mixing and stirring until the crystals dissolves completely, then adding the mixture of dodecyl dimethyl ammonium bromide, lauryl sodium sulfate, sodium laurylsulfate and poly siloxane phosphobetaine ampholytic surfactant, adding antifreeze agent, chelating agent, high molecular surfactant and foam stabilizer, adjusting the PH value of the system, and finally mixing and stirring to obtain the product. The method for preparing an anti-freezing type aqueous film forming foam extinguishing agent provided by the invention has the advantages of low cost and simple preparation process, and can achieve a good anti-freezing effect.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agents, in particular to a preparation method of an antifreeze-type aqueous film-forming foam fire extinguishing agent. Background technique [0002] The aqueous film-forming foam fire extinguishing agent is currently recognized as the oil fire fire extinguishing agent with the best performance in the world. In developed countries, the market share of oil fire extinguishing agents has reached 75%. The research, production and promotion of aqueous film-forming foam fire extinguishing agents in my country are still in their infancy, and the market share of oil fire extinguishing agents is less than 30%. There is a huge room for development. . When fighting oil fires, the aqueous film-forming foam fire extinguishing agent has an excellent fire-extinguishing effect due to its dual functions of water film-forming and foam. The foreign institution that developed the aqueous film-forming foam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
CPCA62D1/0071A62D1/0064
Inventor 俞伯洪费卫民叶明生朱小兵
Owner 上海汇友精密化学品有限公司
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