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Fluoride-free environment-friendly foam extinguishing agent and preparation method thereof

A foam fire extinguishing agent and environmental protection technology, applied in fire protection equipment and other directions, can solve the problems of high combustion calorific value, cannot be biodegraded, fast burning speed, etc., and achieve the effect of improving fire extinguishing efficiency, good cooling effect, and improving high efficiency performance.

Pending Publication Date: 2022-01-14
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, flammable liquid fires have the characteristics of high combustion calorific value, fast combustion speed, fluidity and splashing, and are difficult to extinguish. The composition of the combustion products is complex, and usually contains a large amount of toxic and harmful substances.
Among the numerous foam fire extinguishing agent products, aqueous film-forming foam fire extinguishing agent (AFFF) has become the most effective fire extinguishing technology for large-scale open-air flammable liquid fires due to its high fire extinguishing efficiency. Surfactants containing branched or linear perfluorooctyl carboxylates and perfluorooctyl sulfonates are extremely stable in the environment, difficult to hydrolyze, and cannot be biodegraded, and can be actively carried out in the food chain bioaccumulation and migration, leading to serious environmental problems

Method used

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  • Fluoride-free environment-friendly foam extinguishing agent and preparation method thereof
  • Fluoride-free environment-friendly foam extinguishing agent and preparation method thereof
  • Fluoride-free environment-friendly foam extinguishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 3g of sodium dodecyl sulfonate into 20g of water and fully stir, then add 5g of Sapindus saponin and 5g of cocamidopropyl betaine to form component A and stir evenly. Mix 3g of urea, 0.3g of xanthan gum and 0.2g of sodium carboxymethylcellulose to form component B. Add 15g of ethylene glycol and 5g of diethylene glycol monobutyl ether into the beaker in turn to form component C, and stir slowly. After C is evenly stirred, speed up the speed, slowly add B to C, and stir well. After the mixture of B and C is evenly stirred, slowly add A into C and stir quickly. Finally, deionized water was added until the total weight was 100 g.

Embodiment 2

[0023] Add 5 g of sodium dodecyl sulfonate into 20 g of water and stir well, then add 10 g of Sapindus saponin and 2 g of cocamidopropyl betaine to form component A and stir evenly. Mix 3g of urea, 0.3g of xanthan gum and 0.2g of sodium carboxymethylcellulose to form component B. Add 15g of ethylene glycol and 5g of diethylene glycol monobutyl ether into the beaker in turn to form component C, and stir slowly. After C is evenly stirred, speed up the speed, slowly add B to C, and stir well. After the mixture of B and C is evenly stirred, slowly add A into C and stir quickly. Finally, deionized water was added until the total weight was 100 g.

Embodiment 3

[0025] Add 5 g of sodium dodecyl sulfonate into 20 g of water and stir thoroughly, then add 15 g of Sapindus saponin and 5 g of cocamidopropyl betaine to form component A and stir evenly. Mix 3g of urea, 0.3g of xanthan gum and 0.2g of sodium carboxymethylcellulose to form component B. Add 15g of ethylene glycol and 5g of diethylene glycol monobutyl ether into the beaker in turn to form component C, and stir slowly. After C is evenly stirred, speed up the speed, slowly add B to C, and stir well. After the mixture of B and C is evenly stirred, slowly add A into C and stir quickly. Finally, deionized water was added until the total weight was 100 g.

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PUM

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Abstract

The invention discloses a fluoride-free environment-friendly foam extinguishing agent and a preparation method thereof, and belongs to the technical field of fire extinguishing agents. The fluoride-free environment-friendly foam extinguishing agent is characterized in that the extinguishing agent comprises, by weight, 5-15% of a natural surfactant, 7-10% of a hydrocarbon surfactant, 0.5-0.7% of a foam stabilizer, 3-8% of a cosolvent, 10-15% of an antifreeze agent, and the balance of water. Under the interaction of the components, the extinguishing agent has excellent fire extinguishing performance, and meanwhile, the extinguishing agent does not contain perfluorooctane sulfonic acid and perfluorooctanoic acid which are difficult to degrade, so that the extinguishing agent does not pollute the environment.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agents, and in particular relates to a fluorine-free environment-friendly foam fire extinguishing agent and a preparation method thereof. Background technique [0002] Fire is considered to be the most frequent and destructive disaster among all kinds of disasters in human society. Among them, flammable liquid fires have the characteristics of high combustion calorific value, fast burning speed, fluidity and splashing, and are difficult to extinguish. The composition of the combustion products is complex, and usually contains a large amount of toxic and harmful substances. Among the numerous foam fire extinguishing agent products, aqueous film-forming foam fire extinguishing agent (AFFF) has become the most effective fire extinguishing technology for large-scale open-air flammable liquid fires due to its high fire extinguishing efficiency. Surfactants containing branched or linear perf...

Claims

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Application Information

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IPC IPC(8): A62D1/02A62D1/04
CPCA62D1/0071
Inventor 欧红香王尚彬王钧奇舒中俊陈伟佳潘梦丽
Owner CHANGZHOU UNIV
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