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Foam fire extinguishing agent for automotive ethanol gasoline fire

A technology of foam fire extinguishing agent and ethanol for vehicles, which is applied in fire prevention equipment, etc., can solve problems such as poor fire extinguishing performance, unsatisfactory fire extinguishing effect, insufficient continuous and tight gel film, etc., to enhance strength and toughness, and improve fire extinguishing The effect of strong ability and anti-resurgence ability

Pending Publication Date: 2022-02-18
应急管理部天津消防研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the non-alcohol-resistant foam fire extinguishing agent has poor fire extinguishing performance due to its inability to resist the destructive effect of ethanol in the fuel on the foam, resulting in foam rupture and the inability to form a continuous and effective foam covering layer.
The existing solvent-resistant foam fire extinguishing agent uses xanthan gum as a film-forming agent, but this technology shows that the gel film is not continuous and compact when dealing with ethanol gasoline fires, and the effect of covering and isolating fuel vapor is not significant enough. The effect is also not as expected

Method used

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  • Foam fire extinguishing agent for automotive ethanol gasoline fire
  • Foam fire extinguishing agent for automotive ethanol gasoline fire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the present embodiment, the film-forming agent of ethanol gasoline fire foam fire extinguishing agent for vehicles is xanthan gum, the film aid is acrylic acid-maleic anhydride copolymer, the foaming agent is lauryl amidopropyl betaine, and the fluorosurfactant is Capstone 1470, the cosolvent is ethylene glycol monobutyl ether, the antifreeze is glycerol, and the preservative is sodium benzoate. Each raw material is film-forming agent and film-aiding agent according to mass percentage, and the total is 2%, wherein film-forming agent: film-aiding agent=1:4, blowing agent is 5%, fluorosurfactant is 4%, and co-solvent is 10% %, antifreeze is 10%, preservative is 0.3%, and the rest is water.

[0028] The preparation process is as follows: add 20kg of water to the first stirred tank, then add 0.4kg of film-forming agent and 1.6kg of film-aiding agent, stir until the mixture is uniform to obtain a mixture of film-forming agent and film-aiding agent; Add 48.7kg of water to...

Embodiment 2

[0031] In the present embodiment, the vehicle ethanol gasoline fire foam fire extinguishing agent film-forming agent is xanthan gum, the film-aiding agent is acrylic acid-acrylate copolymer, the foaming agent is sodium lauryl polyoxyethylene ether sulfate, and the fluorosurfactant is Forafac 1203G, cosolvent is diethylene glycol butyl ether, antifreeze is glycerol, preservative is sodium benzoate. Each raw material is 2.5% of film-forming agent and film-aiding agent according to mass percentage, wherein film-forming agent: film-aiding agent=1:4, foaming agent is 5%, fluorosurfactant is 7%, and co-solvent is 15% , Antifreeze is 10%, preservative is 0.3%, and the rest is water.

[0032] The preparation process is as follows: add 20kg of water to the first stirred tank, then add 0.5kg of film-forming agent and 2.0kg of film-aiding agent, stir until the mixture is uniform to obtain a mixture of film-forming agent and film-aiding agent; Add 40.2kg of water to the kettle, heat and ...

Embodiment 3

[0035] In the present embodiment, the vehicle ethanol gasoline fire foam fire extinguishing agent film-forming agent is xanthan gum, the film-aiding agent is acrylic acid-acrylic acid ester copolymer, the blowing agent is alkyl glucoside, the fluorosurfactant is Capstone 1475, and the cosolvent is Propylene glycol methyl ether, antifreeze agent is ethylene glycol, preservative is sodium benzoate. Each raw material is 3% of film-forming agent and film-aiding agent according to mass percentage, wherein film-forming agent: film-aiding agent=1:2, foaming agent is 8%, fluorosurfactant is 7%, and co-solvent is 12% , Antifreeze is 15%, preservative is 0.5%, and the rest is water.

[0036] The preparation process is as follows: add 20 kg of water to the first stirred tank, then add 1 kg of film-forming agent and 2 kg of film-aiding agent, stir and mix evenly to obtain a mixed solution of film-forming agent and film-aiding agent; then add to the second stirred tank 44.5kg of water, he...

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Abstract

The invention provides a foam fire extinguishing agent for an automotive ethanol gasoline fire. According to the fire extinguishing agent formula, a film aid is added on the basis of a film-forming agent, wherein the film-forming agent is xanthan gum; and the film aid comprises at least one of an acrylic acid-maleic anhydride copolymer, an acrylic acid-acrylate copolymer and an acrylic acid-itaconic acid copolymer. The weight ratio of the film-forming agent to the film aid is (1-3): 4 in percentage by weight. The addition of the film aid ensures that the foam extinguishing agent for the automotive ethanol gasoline fire forms a compact and firm reinforced composite film with high air impermeability. The fire extinguishing speed is high when the foam fire extinguishing agent is used for the automotive ethanol gasoline fire, the anti-after-combustion capacity is high, and the good fire extinguishing performance can still be kept even in seawater quality. Meanwhile, the film aid is also suitable for the existing anti-dissolution foam fire extinguishing agent, and the strength and toughness of a fire extinguishing foam gel film can be improved and the fire extinguishing capacity can be enhanced by adding the film aid into the existing anti-dissolution foam fire extinguishing agent.

Description

technical field [0001] The invention belongs to fire extinguishing agents, in particular to a vehicle-used ethanol gasoline fire foam fire extinguishing agent. Background technique [0002] The continuous aggravation of energy crisis and environmental pollution has made the global demand for sustainable and clean energy more and more urgent. The promotion of ethanol gasoline has important strategic significance and practical value for saving oil resources and improving the quality of atmospheric environment. Since the pilot project of ethanol gasoline for vehicles was launched in my country in 2001, the production and promotion of ethanol gasoline has been expanding year by year. At present, more than a dozen provinces in the country have promoted the use of ethanol gasoline for vehicles. [0003] However, as a flammable and explosive dangerous chemical, the fire safety problem of ethanol gasoline is more prominent. At present, the pipeline blending method is mainly used i...

Claims

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Application Information

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IPC IPC(8): A62D1/02
CPCA62D1/0064A62D1/0071
Inventor 包志明赵婷婷张宪忠陈旸胡成
Owner 应急管理部天津消防研究所
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