CN114602113A - Aqueous film-forming foam extinguishing agent and preparation method thereof - Google Patents
Aqueous film-forming foam extinguishing agent and preparation method thereof Download PDFInfo
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- CN114602113A CN114602113A CN202210330399.4A CN202210330399A CN114602113A CN 114602113 A CN114602113 A CN 114602113A CN 202210330399 A CN202210330399 A CN 202210330399A CN 114602113 A CN114602113 A CN 114602113A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0071—Foams
- A62D1/0085—Foams containing perfluoroalkyl-terminated surfactant
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0064—Gels; Film-forming compositions
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Abstract
The invention discloses an aqueous film-forming foam extinguishing agent and a preparation method thereof. The water film-forming foam extinguishing agent comprises C6 short-chain fluorocarbon surfactant, C6 fluorine-containing polymer, foaming agent and organic solvent, wherein the extinguishing agent comprises, by weight, 2-10% of C6 short-chain fluorocarbon surfactant, 1-5% of C6 fluorine-containing polymer, 2-13% of foaming agent and 3-15% of organic solvent. In addition, the fire extinguishing agent of the present invention also includes antifreeze and preservative. The aqueous film-forming foam extinguishing agent does not contain PFOS and PFOA, is green and environment-friendly, does not pollute the environment, has better fire extinguishing effect, better seawater resistance, better sintering resistance and better freezing and melting resistance, has simple preparation method and easily controlled conditions, and is suitable for large-scale industrial production.
Description
Technical Field
The invention belongs to the technical field of fire extinguishing agents, and particularly relates to an aqueous film-forming foam extinguishing agent and a preparation method thereof.
Background
An aqueous film-forming foam (AFFF) fire extinguishing agent also called light water foam fire extinguishing agent is a foam fire extinguishing agent which takes fluorine-containing surfactant and hydrocarbon surfactant as main raw materials and can form a water film on the surface of some hydrocarbon liquids. The fire extinguishing mechanism of the water film-forming foam fire extinguishing agent is that a water film and a condensed foam floating layer are formed on the surface of hydrocarbon liquid, so that the hydrocarbon liquid is isolated from air, the functions of covering, sealing and cooling are achieved, liquid fire, especially oil fire, can be quickly extinguished, and the water film-forming foam fire extinguishing agent is one of the most effective fire extinguishing agents for extinguishing B-class fire at present. Due to the remarkable advantages of the aqueous film-forming foam extinguishing agent in extinguishing class B fire, the aqueous film-forming foam extinguishing agent is widely used for extinguishing fire in places such as oil fields, oil refineries, oil depots, ships, wharfs and airports.
However, in the production of the existing aqueous film-forming foam extinguishing agent, most of the fluorocarbon surfactants are C8 class fluorocarbon surfactants, such as perfluorooctane sulfonate (PFOS), ammonium Perfluorooctanoate (PFOA), and the like. When the foam fire extinguishing agent is used for extinguishing fire, the fire extinguishing agent residue is discharged into the environment together with water, and the C8 fluorocarbon surfactant is one of the most difficult-to-degrade organic pollutants found in the world at present, can be accumulated in human bodies and animal bodies, and is difficult to discharge.
Therefore, the development of an aqueous film-forming foam extinguishing agent with high extinguishing efficiency and environmental protection without pollution is urgently needed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the aqueous film-forming foam extinguishing agent and the preparation method thereof are provided, the aqueous film-forming foam extinguishing agent does not contain PFOS and PFOA, is green and environment-friendly, has no pollution to the environment, has better fire extinguishing effect, better seawater resistance, better sintering resistance and better freezing and melting resistance, has simple preparation method and easily controlled conditions, and is suitable for large-scale industrial production.
In a first aspect of the invention, an aqueous film-forming foam fire extinguishing agent is provided, which comprises a C6 short-chain fluorocarbon surfactant, a C6 fluoropolymer, a foaming agent, and an organic solvent.
According to the first aspect of the present invention, in some embodiments of the present invention, the fire extinguishing agent comprises 2-10 wt% of C6 short-chain fluorocarbon surfactant.
In some more preferred embodiments of the present invention, the C6 short-chain fluorocarbon surfactant comprises one of perfluoroalkyl amine oxide, perfluoroalkyl polyoxyethylene ether, or a combination thereof.
In some more preferred embodiments of the present invention, the perfluoroalkylamine oxide is type FSC-111.
In some more preferred embodiments of the invention, the perfluoroalkyl amine oxide is available from Hasford chemical, Inc., Sanming.
In some more preferred embodiments of the present invention, the perfluoroalkyl polyoxyethylene ether has a model number of CF 16400.
In some more preferred embodiments of the invention, the perfluoroalkyl polyoxyethylene ether is available from polyfluoro new materials technology, Inc.
In some preferred embodiments of the invention, the fire extinguishing agent comprises 1-5% by weight of C6 fluoropolymer.
In some preferred embodiments of the present invention, the C6 fluoropolymer comprises a perfluoroalkyl polyacrylamide.
In some more preferred embodiments of the present invention, the perfluoroalkyl polyacrylamide is type YY-1069.
In some more preferred embodiments of the present invention, the perfluoroalkyl polyacrylamide is available from Shanghai Yuyang chemical Co., Ltd.
In some preferred embodiments of the present invention, the fire extinguishing agent comprises 2 to 13% by weight of a foaming agent.
In some more preferred embodiments of the present invention, the foaming agent comprises a nonionic surfactant, an anionic surfactant, and a zwitterionic surfactant.
In some more preferred embodiments of the present invention, the foaming agent comprises (1-5) of a nonionic surfactant, an anionic surfactant and a zwitterionic surfactant in parts by mass: (1-5): (2-10).
In some more preferred embodiments of the present invention, the nonionic surfactant comprises one or a combination of the alkyl glycoside APG0810 and fatty alcohol polyoxyethylene ether AEO-9.
In some more preferred embodiments of the invention, the anionic surfactant comprises one or a combination of sodium octyl sulfate SOS and sodium decyl sulfate SDS 1030.
In some more preferred embodiments of the invention, the zwitterionic surfactant comprises one of N-lauryl- β -iminodipropionic acid sodium 160C, cocamidopropyl betaine CAB-35, or a combination thereof.
In some preferred embodiments of the present invention, the fire extinguishing agent comprises 3 to 15% by weight of an organic solvent.
In some preferred embodiments of the present invention, the organic solvent comprises one of dipropylene glycol monomethyl ether, diethylene glycol monobutyl ether, dipropylene glycol monobutyl ether, or a combination thereof.
In some preferred embodiments of the present invention, the fire extinguishing agent further comprises an antifreeze agent.
In some more preferred embodiments of the present invention, the antifreeze agent comprises one or a combination of ethylene glycol, propylene glycol, glycerol, urea, diethylene glycol monobutyl ether, diethylene glycol monomethyl ether, 1, 2-diethylidene alcohol.
In some more preferred embodiments of the present invention, the content of the anti-freezing agent is 10 to 20% by weight.
In some preferred embodiments of the present invention, the fire extinguishing agent further comprises a preservative.
In some more preferred embodiments of the invention, the preservation comprises one of sodium benzoate, potassium sorbate, methyl hydroxybenzoate, or a combination thereof.
In some more preferred embodiments of the present invention, the content of the preservative is 0.3 to 0.4% by weight.
In some preferred embodiments of the invention, the fire suppressant further comprises water.
The second aspect of the invention provides a preparation method of the aqueous film-forming foam extinguishing agent of the first aspect of the invention, which comprises the following specific steps: stirring and mixing the C6 short-chain fluorocarbon surfactant, the C6 fluorine-containing polymer, the foaming agent and the organic solvent according to the corresponding weight percentage to prepare the fire extinguishing agent.
According to the second aspect of the invention, in some embodiments of the invention, the fire extinguishing agent is further prepared by including an antifreeze agent.
In some preferred embodiments of the present invention, the fire extinguishing agent further comprises a preservative during the preparation process.
In some preferred embodiments of the invention, the fire suppressant also includes water during its preparation.
In a third aspect of the invention, there is provided the use of an aqueous film-forming fire foam according to the first aspect of the invention in A, B, C, D, E and class F fires.
According to the third aspect of the present invention, in some embodiments of the present invention, the fire extinguishing agent comprises 2-10 wt% of C6 short-chain fluorocarbon surfactant.
In some preferred embodiments of the present invention, the fire extinguishing agent comprises 1-5% by weight of C6 fluoropolymer.
In some preferred embodiments of the present invention, the fire extinguishing agent comprises 2 to 13% by weight of a foaming agent.
In some preferred embodiments of the present invention, the fire extinguishing agent comprises 3 to 15% by weight of an organic solvent.
In some more preferred embodiments of the invention, the aqueous film-forming foam fire suppressant is used in a class B fire.
The aqueous film-forming foam extinguishing agent contains C6 short-chain fluorocarbon surfactant, C6 fluorine-containing polymer, foaming agent and organic solvent. In the invention, the C6 short-chain fluorocarbon surfactant can rapidly reduce the surface tension of an aqueous solution in an aqueous film-forming foam extinguishing agent, and the surface tension is reduced to 15-20 mN/m, so that a water film is formed in liquid precipitated from foam, and the effect of isolating combustible substances from air is achieved. When the water film and the foam layer are used for fire extinguishing by fuel oil, the formed water film and the foam layer play a role in inhibiting fuel oil evaporation together, in addition, water separated out by the foam absorbs heat and is changed into water vapor, so that the function of cooling the oil surface is realized, the functions of diluting the air around the combustible and reducing the oxygen concentration above the oil surface are also realized, and the spreading function of the water drives the foam to rapidly flow to an area which is not yet extinguished, therefore, the water film forming foam extinguishing agent has higher extinguishing speed. In addition, the existence of the C6 short-chain fluorocarbon surfactant can reduce the shearing force of foam flowing on the liquid surface, thereby improving the fluidity of the foam, and the oil resistance of the foam can be further improved by the oleophobic fluorocarbon chain, thereby further improving the fire extinguishing performance of the aqueous film-forming foam extinguishing agent. The C6 fluorine-containing polymer mainly plays a role in stabilizing foam, and the viscosity of the foam concentrate is greatly increased immediately after the foam concentrate is dissolved in water at a low concentration (0.2-1 wt%), so that the foam stabilizing effect can be achieved. Through the mutual matching of the C6 short-chain fluorocarbon surfactant and the C6 fluorine-containing polymer, the liquid separation time of the fire extinguishing agent in seawater can be prolonged, the foaming rate of the fire extinguishing agent in seawater is improved, the foam is more stable and compact, the foam can be better spread and adhered on the solid and the liquid surface, and the prepared aqueous film-forming foam fire extinguishing agent has longer burning resistance time.
In addition, the foaming agent is compounded by alkyl glycoside APG0810, sodium decyl sulfate SDS1030 and N-lauryl-beta-sodium iminodipropionate 160C, the nonionic surfactant APG0810 mainly can reduce the interfacial tension between water and oil, so that the fire control speed is greatly accelerated, the foaming performance of foam can be greatly improved by the anionic surfactant sodium decyl sulfate SDS1030, and the calcium and magnesium ions in seawater can be complexed by the zwitterionic surfactant N-lauryl-beta-sodium iminodipropionate 160C, so that the seawater resistance of the foam liquid is greatly improved. Therefore, after the three foaming agents are compounded, the three foaming agents respectively play own advantages, and the fire extinguishing speed and the fire extinguishing performance of the fire extinguishing agent are improved. In addition, the compounded foaming agent can further reduce the surface tension of the aqueous film-forming foam liquid, so that the foam is finer and more smooth, and the fire extinguishing speed and the anti-burning performance of the aqueous film-forming foam extinguishing agent are further improved. Compared with the traditional organic solvent, the organic solvent used in the invention has higher environmental protection property; the freezing point of the aqueous film-forming foam liquid is reduced by adjusting the proportion of each component in the antifreezing agent. By combining the advantages, the aqueous film-forming foam extinguishing agent can be widely applied to A, B, C, D, E and F fires, and particularly has a remarkable effect on extinguishing B oil fires.
The invention has the beneficial effects that:
(1) the aqueous film-forming foam extinguishing agent adopts C6 fluorocarbon surfactant and fluoropolymer as raw materials, does not contain PFOS and PFOA, and adopts environment-friendly solvent, so the aqueous film-forming foam extinguishing agent is environment-friendly and does not cause harm to the environment.
(2) The aqueous film-forming foam extinguishing agent has the advantages of good extinguishing effect, low surface tension, high extinguishing speed, long burning-resistant time (more than 10 min), and good seawater resistance, and can extinguish fire within 3 min.
(3) The aqueous film-forming foam extinguishing agent has no visible layering and non-homogeneous phase, and is not influenced by freezing and melting, so that the aqueous film-forming foam extinguishing agent has better freezing resistance and melting resistance, and the preparation method of the aqueous film-forming foam extinguishing agent has the advantages of simple operation process and easily controlled conditions, and is suitable for large-scale industrial production.
Detailed Description
The invention is further described below in conjunction with specific embodiments, and the advantages and features of the invention will become more apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are intended to be within the scope of the invention.
The types and specific sources of materials used in the examples of the present invention are shown in table 1.
TABLE 1 types and specific sources of materials used in the examples of the present invention
| Material | Source | Model number |
| Perfluoroalkyl amine oxide | SANMING HEXAFLUO CHEMICALS Co.,Ltd. | FSC-111 |
| Perfluoroalkyl polyoxyethylene ether | Fluoro New Material technology Co Ltd | CF16400 |
| Perfluoroalkyl polyacrylamides | Shanghai Yuyang chemical Co., Ltd | YY-1069 |
| Alkyl glycosides | YANGZHOU CHENHUA NEW MATERIALS Co.,Ltd. | APG0810 |
| Sodium decyl sulfate | Sorvv chemical (Shanghai) Co Ltd | SDS1030 |
| N-lauryl-beta-iminodiacetic acid sodium salt | Solavi chemical industry (Shanghai) Co., Ltd | 160C |
Example 1
The aqueous film-forming foam fire extinguishing agent in example 1 was prepared from 2% by weight of perfluoroalkyl amine oxide, 1% by weight of perfluoroalkyl polyacrylamide, 0.5% by weight of alkyl glycoside APG0810, 2% by weight of sodium decyl sulfate SDS1030, 8% by weight of sodium N-lauryl- β -iminodipropionate 160C, 5% by weight of dipropylene glycol monomethyl ether, 3% by weight of ethylene glycol, 3% by weight of urea, 0.2% by weight of sodium benzoate and 75.3% by weight of water.
The method comprises the following specific steps: 75.3kg of water is added into a stirring tank, and 0.2kg of sodium benzoate, 3kg of ethylene glycol, 3kg of urea, 5kg of dipropylene glycol monomethyl ether, 0.5kg of alkyl glycoside APG0810, 2kg of sodium decyl sulfate SDS1030, 8kg of sodium N-lauryl-beta-iminodipropionate 160C, 1kg of perfluoroalkyl polyacrylamide and 2kg of perfluoroalkyl amine oxide are sequentially added under mechanical stirring at 300r/min and stirred for 30 min. And finally, adjusting the pH value of the mixture to 7-8 by using sodium hydroxide or citric acid, continuously stirring for 10min, standing for defoaming for 120min, and then barreling the product.
Example 2
The aqueous film-forming foam fire extinguishing agent in example 2 was prepared from 5% perfluoroalkyl amine oxide, 3% perfluoroalkyl polyacrylamide, 1% alkyl glycoside APG0810, 3% sodium decyl sulfate SDS1030, 7% sodium N-lauryl- β -iminodipropionate 160C, 7% dipropylene glycol monobutyl ether, 5% ethylene glycol, 8% urea, 0.3% potassium sorbate, and 60.7% water, in weight%.
The method comprises the following specific steps: 60.7kg of water is added into a stirring tank, 0.3kg of potassium sorbate, 5kg of ethylene glycol, 8kg of urea, 7kg of dipropylene glycol monobutyl ether, 1kg of alkyl glycoside APG0810, 3kg of sodium decyl sulfate SDS1030, 7kg of N-lauryl-beta-iminodipropionate 160C, 3kg of perfluoroalkyl polyacrylamide and 5kg of perfluoroalkyl amine oxide are added in sequence under mechanical stirring at 300r/min and stirred for 30 min. And finally, adjusting the pH value of the mixture to 7-8 by using sodium hydroxide or citric acid, continuously stirring for 10min, standing for defoaming for 120min, and barreling the product.
Example 3
The aqueous film-forming foam fire extinguishing agent in example 3 was prepared from 8% of perfluoroalkyl amine oxide, 5% of perfluoroalkyl polyacrylamide, 1.5% of alkyl glycoside APG0810, 1% of sodium decyl sulfate SDS1030, 10% of sodium N-lauryl- β -iminodipropionate 160C, 3% of dipropylene glycol monomethyl ether, 10% of dipropylene glycol monobutyl ether, 10% of ethylene glycol, 15% of urea, 0.3% of sodium benzoate, 0.2% of potassium sorbate, and 36% of water, in terms of weight%.
The method comprises the following specific steps: 36kg of water was added to a stirring tank, and 0.3kg of sodium benzoate, 0.2kg of potassium sorbate, 10kg of ethylene glycol, 15kg of urea, 3kg of dipropylene glycol monomethyl ether, 10kg of dipropylene glycol monobutyl ether, 1.5kg of alkyl glycoside APG0810, 1kg of sodium decyl sulfate SDS1030, 10kg of sodium N-lauryl-beta-iminodipropionate 160C, 5kg of perfluoroalkyl polyacrylamide and 8kg of perfluoroalkyl amine oxide were added in this order under mechanical stirring at 300r/min and stirred for 30 min. And finally, adjusting the pH value of the mixture to 7-8 by using sodium hydroxide or citric acid, continuously stirring for 10min, standing for defoaming for 120min, and barreling the product.
Example 4
The aqueous film-forming foam fire extinguishing agent in example 4 was prepared from 6% by weight of perfluoroalkyl polyoxyethylene ether, 4% by weight of perfluoroalkyl polyacrylamide, 2% by weight of alkyl glycoside APG0810, 2% by weight of sodium decyl sulfate SDS1030, 5% by weight of sodium N-lauryl- β -iminodipropionate 160C, 5% by weight of dipropylene glycol monomethyl ether, 6% by weight of dipropylene glycol monobutyl ether, 8% by weight of ethylene glycol, 13% by weight of urea, 0.2% by weight of sodium benzoate, 0.3% by weight of potassium sorbate, and 48.5% by weight of water.
The method comprises the following specific steps: 48.5kg of water was added to a stirring tank, and 0.2kg of sodium benzoate, 0.3kg of potassium sorbate, 8kg of ethylene glycol, 13kg of urea, 5kg of dipropylene glycol monomethyl ether, 6kg of dipropylene glycol monobutyl ether, 2kg of the alkyl glycoside APG0810, 2kg of sodium decyl sulfate SDS1030, 5kg of N-lauryl-beta-iminodiacetic acid sodium salt 160C, 4kg of perfluoroalkyl polyacrylamide and 6kg of perfluoroalkyl polyoxyethylene ether were added in this order under mechanical stirring at 300r/min and stirred for 30 min. And finally, adjusting the pH value of the mixture to 7-8 by using sodium hydroxide or citric acid, continuously stirring for 10min, standing for defoaming for 120min, and barreling the product.
Comparative example 1
The aqueous film-forming foam fire extinguishing agent in comparative example 1 was prepared from 3% of perfluoroalkyl amine oxide, 0.5% of alkyl glycoside APG0810, 2% of sodium decyl sulfate SDS1030, 8% of sodium N-lauryl- β -iminodipropionate 160C, 5% of dipropylene glycol monomethyl ether, 3% of ethylene glycol, 3% of urea, 0.2% of sodium benzoate, and 75.3% of water, in terms of weight%.
The specific procedure is the same as in example 1.
Comparative example 2
The aqueous film forming fire suppressant of comparative example 2 was prepared from 3% of perfluoroalkyl polyacrylamide, 0.5% of alkyl glycoside APG0810, 2% of sodium decyl sulfate SDS1030, 8% of sodium N-lauryl- β -iminodipropionate 160C, 5% of dipropylene glycol monomethyl ether, 3% of ethylene glycol, 3% of urea, 0.2% of sodium benzoate and 75.3% of water, in weight%.
The specific procedure was the same as in example 1.
Comparative example 3
The aqueous film forming fire foam of comparative example 3 was prepared from 5% perfluoroalkyl amine oxide, 3% perfluoroalkyl polyacrylamide YY-1069, 16% hydrocarbon surfactant (sodium sulfonate BIO-TERGE AS-40), 7% dipropylene glycol monobutyl ether, 5% ethylene glycol, 8% urea, 0.3% potassium sorbate and 55.7% water, all by weight.
The specific preparation method is the same as that of example 1.
Comparative example 4
The aqueous film forming fire foam of comparative example 4 was prepared from 3% perfluoroalkyl amine oxide, 3% perfluoroalkyl polyacrylamide YY-1069, 20% hydrocarbon surfactant (sodium sulfonate BIO-TERGE AS-40), 6% dipropylene glycol monomethyl ether, 4% ethylene glycol, 4% urea, 0.3% sodium benzoate, and 59.7% water, all by weight.
The specific procedure was the same as in example 1.
The prepared fire extinguishing agent and water are mixed according to the mass ratio of 3: 97 to prepare a solution for extinguishing fire. The product of the invention is self-checked according to the national standard GB15308-2006 of foam extinguishing agent, and the physicochemical properties and fire extinguishing performance of the solution meet the standard requirements, and the specific test results are shown in the following table 2:
TABLE 2 Performance test results of fire extinguishing agents prepared in examples 1 to 4 of the present invention and comparative examples 1 to 4
From the above examples, it can be seen that in the aqueous film-forming foam extinguishing agent prepared in the examples of the present invention, through the interaction between the C6 short-chain fluorocarbon surfactant and the C6 fluoropolymer, the surface tension of the aqueous film-forming foam extinguishing agent can be reduced, the liquid separation time of the extinguishing agent in seawater can be increased, the seawater resistance of the aqueous film-forming foam liquid can be improved, the foaming times of the extinguishing agent can be increased, the foam is more stable and dense, and can be better spread and adhered on the solid and liquid surfaces, so that the prepared aqueous film-forming foam extinguishing agent has longer burning resistance time and faster fire extinguishing speed. Through the compounding of the alkyl glycoside APG0810, the sodium dodecyl sulfate SDS1030 and the N-lauryl-beta-iminodiacetic acid sodium 160C, the surface tension of the aqueous film-forming foam extinguishing agent can be further reduced, and in addition, the foam can be more exquisite, which is beneficial to further improving the fire extinguishing performance of the aqueous film-forming foam extinguishing agent.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. An aqueous film-forming foam extinguishing agent is characterized by comprising, by weight, 2-10% of C6 short-chain fluorocarbon surfactant, 1-5% of C6 fluoropolymer and 2-13% of foaming agent, C6 short-chain fluorocarbon surfactant, C6 fluoropolymer, foaming agent and organic solvent.
2. The fire extinguishing agent of claim 1, wherein the C6 short chain fluorocarbon surfactant comprises one of perfluoroalkyl amine oxide, perfluoroalkyl polyoxyethylene ether, or a combination thereof.
3. The fire extinguishing agent of claim 1, wherein the C6 fluoropolymer comprises a perfluoroalkyl polyacrylamide.
4. The fire extinguishing agent according to claim 1, wherein the foaming agent comprises a nonionic surfactant, an anionic surfactant and a zwitterionic surfactant, and the mass part ratio of the nonionic surfactant to the anionic surfactant to the zwitterionic surfactant is (1-5): (1-5): (2-10);
wherein the nonionic surfactant comprises one or the combination of alkyl glycoside APG0810 or fatty alcohol polyoxyethylene ether AEO-9; the anionic surfactant comprises one or a combination of Sodium Octyl Sulfate (SOS) or Sodium Decyl Sulfate (SDS) 1030; the zwitterionic surfactant comprises one or a combination of N-lauryl-beta-iminodiacetic acid sodium 160C or cocamidopropyl betaine CAB-35.
5. The fire extinguishing agent according to claim 1, wherein the fire extinguishing agent comprises 3-15% by weight of an organic solvent.
6. The fire extinguishing agent of claim 5, wherein the organic solvent comprises one or a combination of dipropylene glycol monomethyl ether, diethylene glycol monobutyl ether, or dipropylene glycol monobutyl ether.
7. The fire extinguishing agent of claim 1, further comprising an anti-freeze agent and a preservative, wherein the anti-freeze agent comprises one or a combination of ethylene glycol, propylene glycol, glycerol, or urea; the preservative comprises one or a combination of sodium benzoate, potassium sorbate or methyl hydroxybenzoate.
8. The fire extinguishing agent according to claim 7, wherein the content of the antifreeze agent is 10-20% and the content of the preservative is 0.3-0.4% by weight.
9. A method for preparing a fire extinguishing agent according to any one of claims 1 to 8, comprising the steps of: stirring and mixing the C6 short-chain fluorocarbon surfactant, the C6 fluorine-containing polymer, the foaming agent and the organic solvent according to corresponding weight percentage to prepare the fire extinguishing agent.
10. Use of a fire extinguishing agent according to any one of claims 1 to 8 in A, B, C, D, E and class F fires.
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