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An environmentally friendly aqueous film-forming foam fire extinguishing agent based on short-chain fluorocarbons

A foam fire extinguishing agent, an environmentally friendly technology, applied in fire prevention equipment, etc., can solve the problems of complex fluorocarbon structure, production difficulty and high cost, AFFF performance decline, etc., to achieve easy-to-obtain raw materials, low production cost, and fast fire extinguishing speed Effect

Active Publication Date: 2021-08-13
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing patent, the technology of preparing AFFF by using fluorocarbon surfactant containing four carbon atoms (C4), but due to the complex structure of fluorocarbon, the production difficulty and cost are relatively high; in addition, using this C4 fluorocarbon surface The properties of AFFF prepared by replacing long-chain fluorocarbons with active agents have declined

Method used

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  • An environmentally friendly aqueous film-forming foam fire extinguishing agent based on short-chain fluorocarbons
  • An environmentally friendly aqueous film-forming foam fire extinguishing agent based on short-chain fluorocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Weigh 2kg of FS-51, 1kg of S-161P, 10kg of oligomeric D-glucopyranose, 10kg of 1,2-diethyl glycol and 3kg of tetraglyme, and slowly add them to the reaction kettle , turn on the stirring, and the stirring speed is 600 rpm.

[0047] (2) After the sample is dissolved, slowly add 60kg of water into the reaction kettle and stir thoroughly.

[0048] (3) Weigh again 0.3kg of 6-deoxy-L-galactose, 0.4kg of sodium biacetate and 4kg of tetrasodium iminodisuccinate, dry mix the three and add them into the reaction kettle, and continue to stir for 2 hours. Finally, add water to 100kg to obtain the product.

Embodiment 2

[0050] (1) Weigh 2kg of FS-51, 1kg of S-161P, 14kg of oligomeric D-glucopyranose, 10kg of 1,2-diethyl glycol and 3kg of tetraglyme, and slowly add them to the reaction kettle , turn on the stirring, and the stirring speed is 600 rpm.

[0051] (2) After the sample is dissolved, slowly add 60kg of water into the reaction kettle and stir thoroughly.

[0052] (3) Weigh again 0.3kg of 6-deoxy-L-galactose, 0.4kg of sodium biacetate and 4kg of tetrasodium iminodisuccinate, dry mix the three and add them into the reaction kettle, and continue to stir for 2 hours. Finally, add water to 100kg to obtain the product.

Embodiment 3

[0054] (1) Weigh 2kg of FS-51, 1kg of S-161P, 2kg of oligomeric D-glucopyranose, 3kg of AS-403kg, 10kg of 1,2-diethylene glycol and 3kg of tetraglyme, slowly Add it into the reaction kettle, start stirring, and the stirring speed is 600 rpm.

[0055] (2) After the sample is dissolved, slowly add 60kg of water into the reaction kettle and stir thoroughly.

[0056] (3) Weigh again 0.3kg of 6-deoxy-L-galactose, 0.4kg of sodium biacetate and 4kg of tetrasodium iminodisuccinate, dry mix the three and add them into the reaction kettle, and continue to stir for 2 hours. Finally, add water to 100kg to obtain the product.

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Abstract

The invention provides an environment-friendly aqueous film-forming foam fire extinguishing agent based on short-chain fluorocarbons, which comprises 3-10% of C4-C6 short-chain fluorocarbon surfactants and 3-25% of hydrocarbon surfactants. %, plant polysaccharide 0.1-4.5%, ion complexing agent 0.5-4.5%, antifreeze agent 10-25%, bacteriostat 0.1-1.5%, and the balance is water. Under the interaction of the above-mentioned components in the present invention, the fire extinguishing agent has excellent fire extinguishing performance. The fire extinguishing agent has excellent foaming performance and stability, fast fire extinguishing speed and long anti-resurgence time. The fire extinguishing agent does not contain PFOS, and is not easy to accumulate in the environment and organisms, so it will not cause environmental pollution. The raw materials of the fire extinguishing agent are easy to obtain, the production cost is low, and the fire extinguishing agent is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agents, in particular to an environment-friendly aqueous film-forming foam fire extinguishing agent based on short-chain fluorocarbons. Background technique [0002] Aqueous Film-Forming Foam (AFFF), also known as "light water" foam fire extinguishing agent, is a high-efficiency fire extinguishing agent developed in the 1960s in the world. The active agent is based on hydrocarbon surfactant and can form a layer of water film on the surface of some hydrocarbon liquids, which has the double fire extinguishing effect of foam and water film. Among all the fire extinguishing agents currently used to extinguish oil fires, AFFF is recognized as the best fire extinguishing agent in the world. [0003] The key ingredient in traditional AFFF is the long-chain fluorocarbon surfactant—perfluorooctane sulfonate (PFOS) and its derivatives, which are currently the most active class of all surfactants...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/02
CPCA62D1/0085
Inventor 姜宁余潇阳陆守香宗若雯黎昌海
Owner UNIV OF SCI & TECH OF CHINA
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