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Foam extinguishing agent based on fluorocarbon-organosilicon surfactant compound system

A technology of surfactant and foam fire extinguishing agent, used in fire protection equipment and other directions, can solve the problems of fire-extinguishing foam's heat-resistant and liquid-resistant stability to be improved, poor fire-extinguishing effect, high fire danger, etc., to achieve fire-fighting and anti-burning The effect of excellent performance, non-degradable and simple preparation method

Pending Publication Date: 2022-06-14
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, fire accidents involving high-boiling point liquids and boiling-over liquids occur frequently. When this type of liquid burns, the oil surface temperature is high, and it will boil when it encounters water. , Boiling liquid degradation, the fire extinguishing effect of high boiling point liquid and boiling liquid fire is not good, the heat and liquid resistance stability of fire extinguishing foam needs to be improved
In addition, perfluorooctane sulfonic acid (perfluorooctane sulphonate, PFOS) surfactant, as the core component of traditional AFFF, faces a global ban due to serious environmental pollution.

Method used

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  • Foam extinguishing agent based on fluorocarbon-organosilicon surfactant compound system
  • Foam extinguishing agent based on fluorocarbon-organosilicon surfactant compound system
  • Foam extinguishing agent based on fluorocarbon-organosilicon surfactant compound system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Preparation of aqueous film-forming foam extinguishing agent concentrate (100kg, 3% type)

[0022] Take by weighing 2kg of perfluorooctane sulfonamide alkyl betaine, respectively. 20kg of 501W type organosilicon surfactant is added to the reactor, then 45kg of industrial soft water is added, and stirring is started, and the stirring speed is 120 rev / min; 2kg, ammonium polyphosphate 3kg, sodium diacetate 1kg, after stirring and mixing, adjust the pH value of the solution with a pH regulator, and stir to obtain the product.

Embodiment 2

[0023] Example 2: Preparation of aqueous film-forming foam extinguishing agent concentrate (100kg, 3% type)

[0024] Take by weighing 2kg of perfluorooctane sulfonamide alkyl betaine, respectively. 30kg of 501W type organosilicon surfactant was added to the reaction kettle, 35kg of industrial soft water was added, stirring was started, and the stirring speed was 120 rev / min; Base cellulose 2kg, sodium alginate 2kg, ammonium polyphosphate 3kg, potassium sorbate 1kg, after stirring and mixing, adjust the pH value of the solution with a pH regulator, and stir to obtain the product.

Embodiment 3

[0025] Example 3: Preparation of aqueous film-forming foam extinguishing agent concentrate (100kg, 6% type)

[0026] Take by weighing 2kg of perfluorooctane sulfonamide alkyl betaine, respectively. 20kg of 501W type organosilicon surfactant is added to the reaction kettle, 40kg of industrial soft water is added, and stirring is started, and the stirring speed is 120 rev / min; , ammonium polyphosphate 3kg, sodium diacetate 1kg. After stirring and mixing, the pH value of the solution is adjusted with a pH regulator, and the product is obtained by stirring evenly.

[0027] The above-mentioned examples 1 and 2 were mixed with water in a mass ratio of 3:97, and the above-mentioned example 3 was mixed with water in a mass ratio of 6:94 to prepare a solution for extinguishing fire. The product of the present invention is self-tested according to the national standard "GB15308-2006" of "Foam Fire Extinguishing Agent". The physical and chemical properties and fire extinguishing perfo...

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Abstract

The invention discloses a foam extinguishing agent based on a fluorocarbon-organosilicon surfactant compound system, which comprises the following components in percentage by weight: 1 to 3 percent of fluorocarbon surfactant, 10 to 30 percent of organosilicon surfactant, 20 to 30 percent of cosolvent, 1 to 3 percent of foam stabilizer, 1 to 3 percent of anti-burning agent, 2 to 5 percent of flame retardant and 0.1 to 1 percent of preservative. And the balance of water. The heat-resistant and liquid-resistant foam extinguishing agent belongs to an environment-friendly foam extinguishing agent, is low in surface tension and excellent in spreading, fire extinguishing and burning resistance, and is suitable for extinguishing liquid fire with high boiling point and boiling overflow property.

Description

technical field [0001] The invention belongs to the technical field of fire-fighting and fire-extinguishing materials, in particular to a heat- and liquid-resistant foam fire-extinguishing agent based on a fluorocarbon-organosilicon surfactant compound system. 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. AFFF has the characteristics of light weight, good fluidity, good durability, strong burning resistance and strong adhesion. When it is applied to the surface of fuel liquid, it can quickly form a water film on the surface of liquid fuel. The water film and the foam layer together It plays the role of isolating combustibles, isolating oxygen, and cooling and cooling. The dual functions of the foam layer and the water film quickly control and extinguish the fire. It is the best type of foam fire extinguishing agent in existence. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
CPCA62D1/0085
Inventor 宗若雯李凡喻箫
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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