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Environment-friendly aqueous film-forming foam extinguishing agent based on C6 type fluorocarbon surfactant

A surfactant and foam fire extinguishing agent technology, applied in fire prevention equipment, etc., can solve the problems of discounted performance of aqueous film-forming foam, high cost, and high concentration of fluorocarbon surfactants

Active Publication Date: 2019-11-22
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluorocarbon surfactant used in this formula has a high concentration and high cost, which is not conducive to a large number of popularization and use
On the other hand, excessively reducing the number of carbon atoms in the fluorocarbon surfactant will lead to a great reduction in the performance of the aqueous film-forming foam

Method used

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  • Environment-friendly aqueous film-forming foam extinguishing agent based on C6 type fluorocarbon surfactant
  • Environment-friendly aqueous film-forming foam extinguishing agent based on C6 type fluorocarbon surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the preparation of aqueous film-forming foam fire extinguishing agent (1 ton, 3% type)

[0040] Add 40kg of perfluorooctyl sulfonamide alkyl betaine to the reaction kettle, then add 750kg of industrial soft water and fully stir and mix; under stirring, add 50kg of polyethylene glycol p-isooctylphenyl ether, 6kg Sodium alginate diester, 100kg tetraethylene glycol dimethyl ether, 2kg tetrasodium iminodisuccinate, 2kg potassium 2,4-hexadienoate, after stirring and mixing, adjust the pH value of the solution to 7 with ammonia water or acetic acid, and then replenish Process soft water until the total weight is 1 ton, and stir evenly to obtain an aqueous film-forming foam fire extinguishing agent.

Embodiment 2

[0041] Embodiment 2: the preparation of aqueous film-forming foam fire extinguishing agent (1 ton, 3% type)

[0042] Add 40kg of perfluorooctyl sulfonamide alkyl betaine to the reactor, then add 750kg of industrial soft water and fully stir and mix; under stirring, add 50kg of oligomeric D-glucopyranose and 6kg of linseed gum to the reactor respectively . The weight is 1 ton, and the mixture is evenly stirred to obtain an aqueous film-forming foam fire extinguishing agent.

Embodiment 3

[0043] Embodiment 3: the preparation of aqueous film-forming foam fire extinguishing agent concentrate (1 ton, 6% type)

[0044] Add 20kg perfluorooctyl thiopropionamido alkyl sulfonate to the reactor, then add 750kg industrial soft water and fully stir and mix; under stirring, add 30kg oligomeric D-glucopyranose, 3kg sodium alginate diester, 50kg butyl carbitol, 1kg diaminoethylene tetraacetate, 1kg sodium biacetate, after stirring and mixing, use ammonia water or acetic acid to adjust the pH value of the solution to 7, and then add industrial soft water to The total weight is 1 ton, and the mixture is evenly stirred to obtain an aqueous film-forming foam fire extinguishing agent.

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Abstract

The invention provides an environment-friendly aqueous film-forming foam extinguishing agent based on a C6 type fluorocarbon surfactant. The foam extinguishing agent comprises the following componentsin percentage by weight: 2%-5% of a C6 type fluorocarbon surfactant, 3%-25% of a hydrocarbon surfactant, 0.1%-4.5% of plant polysaccharide, 5%-25% of a cosolvent, 0.1%-4.5% of an ion complexing agent, 0.1%-2% of a bacteriostatic agent and the balance of water. Under the interaction of the components with the contents, the fire extinguishing agent has excellent fire extinguishing performance. Theraw materials of the fire extinguishing agent cannot pollute the environment; and the fire extinguishing speed is high and the burning resistance is good. Under the condition that the foaming multipleis 7.8-8.3, the 25% drainage time of the fire extinguishing agent is 3.2-4.4 min; the fire extinguishing time (strong release) is 37-47 seconds; and the anti-burning time (strong release) is 12.7 to17.5 minutes.

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 a C6 type fluorocarbon surfactant. Background technique [0002] Aqueous Film-Forming Foam (AFFF) fire extinguishing agent, also known as "light water" foam fire extinguishing agent, refers to a foam fire extinguishing agent that can form a layer of water film on the surface of liquid fuel. The water film not only isolates oxygen, but also cools and cools the fuel surface. Due to the dual fire extinguishing effects of foam and water film, aqueous film-forming foam is especially suitable for large-scale flammable liquid fires, and is widely used in areas such as large ships, offshore oil and gas drilling platforms, and oil storage tank farms. [0003] In recent years, with the promotion and use of aqueous film-forming foam fire extinguishing agents in the world, the environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
CPCA62D1/0071
Inventor 余潇阳姜宁李凡宗若雯陆守香
Owner UNIV OF SCI & TECH OF CHINA
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