A solid foam fire extinguishing agent

Abstract

The present invention discloses a solid foam fire extinguishing agent, wherein the raw materials for its preparation at least include, by weight, 20 to 100 parts of fluorocarbon surfactant, 1 to 60 parts of hydrocarbon surfactant, 1 to 20 parts of foaming agent, 1 to 20 parts of foam stabilizer, 0.1 to 1 part of thickener, 1 to 10 parts of lubricant, and 1 to 10 parts of moisture-proof agent. The traditional liquid foam fire extinguishing agent is changed into a solid powder formula, which can be quickly dissolved in water in a very short time, and rich and stable foam required for fire extinguishing can be immediately generated at the fire scene. The fire extinguishing effect can be the same as or even better than that of the liquid foam fire extinguishing agent in the prior art, and the load of the fire truck can be greatly reduced, the fire extinguishing capacity of the fire truck can be improved, and the fire extinguishing efficiency of the fire extinguishing agent per unit volume or unit weight can be greatly improved.

Description

Technical Field

[0001] The invention relates to the field of fire extinguishing agent materials, in particular to a solid foam fire extinguishing agent. Background Art

[0002] Aqueous film-forming foam fire extinguishing agent (AFFF) has many advantages such as fast fire extinguishing speed, high efficiency, strong anti-reignition ability, long storage period, low pollution, applicable to large fires, and can extinguish oil fires in gaps and dead corners. It is the main fire extinguishing agent for extinguishing oil fires. As we all know, aqueous film-forming foam fire extinguishing agent is stored and used in liquid form, and its core component fluorocarbon surfactant (FCS) has a mass percentage of about 4-6wt% in the aqueous film-forming foam fire extinguishing agent concentrate. Pure fluorocarbon surfactant is in the form of crystals or powder, while industrial-grade fluorocarbon surfactants are all water or organic solvent solutions (such as F1157), in which the mass percentage of pure fluorocarbon surfactant is about 30wt%. It can be seen that in the general aqueous film-forming foam fire extinguishing agent formula, the content of pure fluorocarbon surfactant is only 1.2-1.8wt%. Considering that the aqueous film-forming foam fire extinguishing agent concentrate needs to be mixed with water in a certain proportion (generally 6wt% or 3wt%) before extinguishing a fire, the actual content of the fluorocarbon surfactant in the foam liquid is only 0.72 to 1.08wt‰.

[0003] If the aqueous film-forming foam fire extinguishing agent is made into a solid powder, and the powder can be quickly dissolved under the scouring of high-speed water flow, the content of fluorocarbon surfactant in the aqueous solution can reach more than 1wt‰ in a very short time, which can ensure that it has the same foaming and fire extinguishing effect as the liquid aqueous film-forming foam fire extinguishing agent. Changing the formula of the aqueous film-forming foam fire extinguishing agent from liquid to solid can reduce the mass and volume of the foam fire extinguishing agent to 5% or even lower than the original, which will greatly improve the fire fighting and rescue capabilities of a single foam fire truck. At present, the foam liquid load of a single fire truck in China is generally 1 to 3 tons. If solid foam fire extinguishing agent is used instead, the weight is expected to be only 50 to 150 kilograms. Its weight and volume can be basically ignored, which can significantly reduce the load of airport fire trucks; if the load of the fire extinguishing agent remains unchanged, the fire extinguishing capacity of a single foam fire truck will be increased by more than 20 times. Therefore, the invention of solid foam fire extinguishing agent is expected to greatly improve the fire extinguishing efficiency of foam fire extinguishing agent per unit volume / weight, thereby significantly improving the emergency rescue capabilities of oil fire accidents. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a solid foam fire extinguishing agent, wherein the raw materials for its preparation at least comprise, by weight: 20 to 100 parts of fluorocarbon surfactant, 1 to 60 parts of hydrocarbon surfactant, 1 to 20 parts of foaming agent, 1 to 20 parts of foam stabilizer, 0.1 to 1 part of thickener, 1 to 10 parts of lubricant, and 1 to 10 parts of moisture-proof agent.

[0005] As a preferred technical solution, the fluorocarbon surfactant is Wherein n=0-9, m=2-5, X is a halogen, and R is a hydrophilic group.

[0006] As a preferred technical solution, the halogen is selected from one of F, Cl, Br and I.

[0007] As a preferred technical solution, the hydrophilic group is selected from one of hydroxyl, carboxyl, sulfonic acid and phosphoric acid.

[0008] As a preferred technical solution, the hydrocarbon surfactant is selected from a mixture of one or more of alkyl sulfonates, alkylbenzene sulfonates, alkyl carboxylates, alkyl sulfates, alkyl phosphates, and fatty alcohol polyoxyethylene ethers.

[0009] As a preferred technical solution, the foaming agent is selected from a mixture of one or more of fatty alcohol polyoxyethylene ether sodium sulfate, sodium lauryl sulfate, dodecyl betaine, cocamidopropyl betaine, dodecyl hydroxypropyl sulfobetaine, and lauric acid diethanolamide.

[0010] As a preferred technical solution, the foam stabilizer is selected from a mixture of one or more of sodium α-olefin sulfonate, triethanolamine, diethylene glycol butyl ether, polyvinyl alcohol, polyacrylamide, and dodecyl dimethyl amine oxide.

[0011] As a preferred technical solution, the thickener is selected from a mixture of one or more of xanthan gum, guar gum, carboxymethyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, gelatin, and gum arabic.

[0012] As a preferred technical solution, the lubricant is selected from a mixture of one or more of magnesium stearate, mica powder, talc, graphite, molybdenum disulfide, graphite fluoride, and polytetrafluoroethylene.

[0013] As a preferred technical solution, the moisture-proofing agent is selected from a mixture of one or more of silica gel, quicklime, montmorillonite, calcium chloride and alumina.

[0014] Beneficial effects: The solid foam fire extinguishing agent provided by the present application changes the traditional liquid foam fire extinguishing agent into a solid powder formula, which can be quickly dissolved in water in a very short time, and immediately generate rich and stable foam required for fire extinguishing at the fire scene. The fire extinguishing effect can be the same as or even better than the liquid foam fire extinguishing agent in the prior art. It can also greatly reduce the load of the fire truck, improve the fire extinguishing ability of the fire truck, and greatly improve the fire extinguishing efficiency of the fire extinguishing agent per unit volume or unit weight. DETAILED DESCRIPTION

[0015] The content of the present invention can be further understood in conjunction with the following detailed description of the preferred implementation method of the present invention and the included examples. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as those generally understood by ordinary technicians in the field to which the present application belongs. If the definition of a specific term disclosed in the prior art is inconsistent with any definition provided in the present application, the definition of the term provided in the present application shall prevail. As used herein, unless otherwise clearly indicated in the context, features that are not limited to singular or plural forms are also intended to include features in plural forms. It should also be understood that the term "prepared by..." as used herein is synonymous with "comprising", "including", "including", "having", "including" and / or "comprising", when used in this specification, it means the stated composition, step, method, product or device, but does not exclude the presence or addition of one or more other compositions, steps, methods, products or devices. In addition, when describing the embodiments of the present application, the use of "preferred", "preferably", "preferred" and the like refers to embodiments of the present invention that can provide certain beneficial effects in certain cases. However, other embodiments may also be preferred in the same or other cases. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the invention.

[0016] In order to solve the above technical problems, the present invention provides a solid foam fire extinguishing agent, wherein the raw materials for its preparation at least comprise, by weight: 20 to 100 parts of fluorocarbon surfactant, 1 to 60 parts of hydrocarbon surfactant, 1 to 20 parts of foaming agent, 1 to 20 parts of foam stabilizer, 0.1 to 1 part of thickener, 1 to 10 parts of lubricant, and 1 to 10 parts of moisture-proof agent.

[0017] Fluorocarbon surfactant

[0018] Fluorocarbon surfactants refer to hydrocarbon surfactants in which all or part of the hydrogen atoms in the hydrocarbon chain are replaced by fluorine atoms. Due to the special properties of fluorine, the fluorocarbon chain has excellent hydrophobicity and oleophobicity. In addition, compared with hydrocarbon surfactants, fluorocarbon surfactants have higher surface activity, better chemical stability and better thermal stability. In the field of firefighting, fluorocarbon surfactants are the main component of foam fire extinguishing agents, especially for oil fires. After using fluorocarbon surfactants, the fire is extinguished quickly and is not easy to reignite.

[0019] In some preferred embodiments, the fluorocarbon surfactant is Wherein n=0-9, m=2-5, X is a halogen, and R is a hydrophilic group; further preferably, the halogen is selected from one of F, Cl, Br, and I; further, the hydrophilic group is selected from one of hydroxyl, carboxyl, sulfonic acid, and phosphoric acid.

[0020] In some preferred embodiments, the The preparation method comprises the following steps:

[0021] a. Synthesis of intermediate product: under room temperature, in an inert gas atmosphere, perfluoroalkylsulfonyl fluoride is added dropwise to a toluene solution of 3-dimethylaminopropylamine, stirring while adding dropwise, and stirring and reacting for 1 to 2 hours after the addition is completed, and then heated to 45°C, reacting at this temperature for 2 to 4 hours, after the solvent is evaporated, anhydrous ether is added, and the resulting solution is vacuum filtered to obtain a white precipitate, and the precipitate is washed with anhydrous ether to obtain an intermediate product;

[0022] b. Synthesis of target product: At room temperature, in an inert gas atmosphere, add the intermediate product to an acetonitrile solution of halogenated alcohol, reflux the resulting mixed solution at 80°C for 8 to 10 hours, evaporate the solvent, add anhydrous ether, vacuum filter the resulting solution to obtain a white precipitate, and wash the precipitate with anhydrous ether to obtain the target product.

[0023] In some preferred embodiments, the perfluoroalkylsulfonyl fluoride in step a is selected from one of perfluorobutylsulfonyl fluoride, perfluorohexylsulfonyl fluoride, perfluorooctanesulfonyl fluoride and perfluoroethylsulfonyl fluoride.

[0024] In some preferred embodiments, the halogenated ethanol in step b is selected from one of fluoroethanol, chloroethanol, bromoethanol and iodoethanol.

[0025] Hydrocarbon surfactants

[0026] Hydrocarbon surfactants refer to substances that can significantly change the interface state of a solution system when added in small amounts. The molecules are amphiphilic, with one end being a hydrophilic group, such as a hydroxyl group, a carboxyl group, a sulfonic acid group, a sulfate group, an amino group, etc.; and the other end being a hydrophobic group, mostly a non-polar hydrocarbon chain. The hydrocarbon surfactants in this application are not particularly limited and can be commercially available.

[0027] Hydrocarbon surfactants can be divided into cationic surfactants, anionic surfactants, zwitterionic surfactants and nonionic surfactants.

[0028] In some embodiments, the cationic surfactant may include alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkyldimethylbenzylammonium salts, dimethylbenzyldodecylammonium bromide, benzyltriethylammonium chloride, benzalkonium chloride, and benzalkonium bromide.

[0029] In some embodiments, the anionic surfactant may include polyacrylamide, diethanolamide, stearic acid glyceryl monoester, alkylbenzene sulfonate, alkyl sulfonate, alkyl carboxylate, alkyl sulfate, alkyl phosphate, fatty alcohol sulfate, sodium lauryl sulfate, fatty alcohol polyoxyethylene ether sulfate.

[0030] In some embodiments, the zwitterionic surfactant may include lecithin, lauroyl glutamic acid, dodecylaminopropionic acid, alkyl dimethyl betaine, alkyl dimethyl sulfoethyl betaine, and alkyl dimethyl hydroxypropyl phosphate betaine.

[0031] In some embodiments, the nonionic surfactant may include alkyl glycosides, fatty acid glycerides, fatty acid sorbitan, polysorbate, and fatty alcohol polyoxyethylene ether.

[0032] In some preferred embodiments, the hydrocarbon surfactant is lauryl alcohol polyoxyethylene ether.

[0033] In some preferred embodiments, the ratio of the fluorocarbon surfactant to the hydrocarbon surfactant is (1-9):2; further preferably, the ratio of the fluorocarbon surfactant to the hydrocarbon surfactant is (2-5):2; further, the ratio of the fluorocarbon surfactant to the hydrocarbon surfactant is 3:2.

[0034] Foaming agent

[0035] A foaming agent refers to a surfactant whose aqueous solution can generate a large amount of foam when air is introduced, because it greatly reduces the surface tension of the liquid and forms a double electron layer on the surface of the liquid film to surround the air, forming bubbles, which then form foam. The foaming agent in this application is not particularly limited and can be commercially available.

[0036] In some embodiments, the foaming agent may include sodium lauryl sulfate, sodium alcohol polyoxyethylene ether sulfate, sodium fatty acid, sodium laurel glutamate, dodecyl betaine, cocamidopropyl betaine, dodecyl hydroxypropyl sulfobetaine, and lauric acid diethanolamide.

[0037] In some preferred embodiments, the foaming agent is sodium dodecyl sulfate.

[0038] Foam stabilizer

[0039] In oil fire, foam is easy to defoam when it meets oil, and the foam stabilizer can prolong and stabilize the foam to keep its performance for a long time. The foam stabilizer in the present application is not particularly limited and can be commercially available.

[0040] In some embodiments, the foam stabilizer may include sodium α-olefin sulfonate, triethanolamine, diethylene glycol butyl ether, polyvinyl alcohol, polyacrylamide, dodecyl dimethyl amine oxide, and alkyl alcohol amide.

[0041] In some preferred embodiments, the foam stabilizer is sodium α-olefin sulfonate.

[0042] Thickener

[0043] By adding a small amount of thickener to the fire extinguishing agent, the viscosity of water can be appropriately increased, the adhesion of water on the surface of the burning object can be increased, and the loss of fire extinguishing water can be reduced. The thickener in this application is not particularly limited and can be commercially available.

[0044] In some embodiments, the thickener may include xanthan gum, guar gum, carboxymethyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, gelatin, gum arabic, starch, sodium alginate, polyvinyl alcohol, polypropylene alcohol, and dextrin.

[0045] In some preferred embodiments, the thickener is sodium carboxymethyl cellulose.

[0046] Lubricants

[0047] The present invention is in solid powder form, and the addition of lubricant can prevent the powder from agglomerating and make it more soluble. The lubricant in the present application is not particularly limited and can be commercially available.

[0048] In some embodiments, the lubricant may include magnesium stearate, mica powder, talc, graphite, molybdenum disulfide, graphite fluoride, polytetrafluoroethylene, and boron nitride.

[0049] In some preferred embodiments, the lubricant is talc.

[0050] Moisture-proofing agent

[0051] Some components in the present invention are hygroscopic. After absorbing moisture, the powder is easy to agglomerate and difficult to dissolve, which affects the fire extinguishing efficiency. Adding a moisture-proofing agent can extend the shelf life of the solid foam fire extinguishing agent in the present invention and ensure its use effect. The moisture-proofing agent in this application is not particularly limited and can be commercially available.

[0052] In some embodiments, the moisture-proofing agent may include silica gel, quicklime, montmorillonite, calcium chloride, and aluminum oxide.

[0053] In some preferred embodiments, the moisture-proofing agent is calcium chloride.

[0054] In some preferred embodiments, the preparation method of the solid foam fire extinguishing agent is: fluorocarbon surfactant, hydrocarbon surfactant, foaming agent, foam stabilizer, thickener, lubricant and moisture-proof agent are added in sequence, and ground into uniform solid powder.

[0055] In some preferred embodiments, the method for using the solid foam fire extinguishing agent is: dissolving the solid foam fire extinguishing agent in water, and then spraying the foam from a foam gun to extinguish the fire.

[0056] The solid foam fire extinguishing agent in the present application uses a water-soluble fluorocarbon surfactant, and further improves the solubility of the fluorocarbon surfactant by adding a hydrocarbon surfactant to achieve rapid dissolution of the solid foam fire extinguishing agent. It can produce foam with good stability in combination with the high-speed fire water flow on site, with a fast fire extinguishing speed and a long burning resistance time. The fire extinguishing effect is the same as or even better than that of the existing liquid foam fire extinguishing agent, and it can also greatly reduce the load of the fire truck and improve the fire extinguishing efficiency.

[0057] Example

[0058] The technical solution of the present invention is described in detail below through embodiments, but the protection scope of the present invention is not limited to the embodiments.

[0059] Example 1

[0060] Embodiment 1 provides a solid foam fire extinguishing agent, and its preparation raw materials include, by weight: 60 parts, lauryl alcohol polyoxyethylene ether (CAS: 9002-92-0) 40 parts, sodium dodecyl sulfate (CAS: 151-21-3) 10 parts, sodium α-olefin sulfonate (CAS: 68439-57-6) 10 parts, sodium carboxymethyl cellulose (CAS: 9004-32-4) 0.5 parts, talc (CAS: 14807-96-6) 5 parts, calcium chloride (CAS: 10043-52-4) 5 parts.

[0061] Said The preparation method comprises the following steps:

[0062] a. Synthesis of intermediate product: under room temperature and in an inert gas atmosphere, perfluorobutylsulfonyl fluoride (CAS: 375-72-4) was added dropwise to a toluene solution of 3-dimethylaminopropylamine (CAS: 109-55-7), and the mixture was stirred while being added dropwise. After the addition was completed, the mixture was stirred and reacted for 2 hours, and then heated to 45°C and reacted at this temperature for 4 hours. After the solvent was evaporated, anhydrous ether was added, and the resulting solution was vacuum filtered to obtain a white precipitate, which was washed with anhydrous ether to obtain an intermediate product;

[0063] b. Synthesis of target product: At room temperature, in an inert gas atmosphere, add the intermediate product to an acetonitrile solution of bromoethanol (CAS: 540-51-2), and reflux the resulting mixed solution at 80°C for 10 hours. After evaporating the solvent, add anhydrous ether, and vacuum filter the resulting solution to obtain a white precipitate. Wash the precipitate with anhydrous ether to obtain the target product.

[0064] This example also provides a method for preparing the solid foam fire extinguishing agent: Add lauryl alcohol polyoxyethylene ether, sodium lauryl sulfate, sodium α-olefin sulfonate, sodium carboxymethyl cellulose, talc and calcium chloride in sequence and grind into uniform solid powder to obtain the product.

[0065] The method of using the solid foam fire extinguishing agent in this example is: dissolve the solid foam fire extinguishing agent in water, wherein The mass fraction is 12.5wt‰, and the fire is extinguished by spraying foam from a foam gun.

[0066] Example 2

[0067] Embodiment 2 provides a solid foam fire extinguishing agent, and its preparation raw materials include, by weight: 90 parts, lauryl alcohol polyoxyethylene ether 20 parts, sodium lauryl sulfate 10 parts, α-olefin sulfonate sodium 10 parts, sodium carboxymethyl cellulose 0.5 parts, talc 5 parts, calcium chloride 5 parts.

[0068] Said The preparation method comprises the following steps:

[0069] a. Synthesis of intermediate product: Under room temperature and in an inert gas atmosphere, perfluorohexylsulfonyl fluoride (CAS: 423-50-7) was added dropwise to a toluene solution of 3-dimethylaminopropylamine, and stirred while adding dropwise. After the addition was completed, stirring and reacting were continued for 2 hours, and then heated to 45°C and reacted at this temperature for 4 hours. After the solvent was evaporated, anhydrous ether was added, and the resulting solution was vacuum filtered to obtain a white precipitate, and the precipitate was washed with anhydrous ether to obtain an intermediate product;

[0070] b. Synthesis of target product: At room temperature, in an inert gas atmosphere, add the intermediate product to an acetonitrile solution of fluoroethanol (CAS: 371-62-0), and reflux the resulting mixed solution at 80°C for 10 hours. After evaporating the solvent, add anhydrous ether, and vacuum filter the resulting solution to obtain a white precipitate. Wash the precipitate with anhydrous ether to obtain the target product.

[0071] This example also provides a method for preparing the solid foam fire extinguishing agent: Add lauryl alcohol polyoxyethylene ether, sodium lauryl sulfate, sodium α-olefin sulfonate, sodium carboxymethyl cellulose, talc and calcium chloride in sequence and grind into uniform solid powder to obtain the product.

[0072] The method of using the solid foam fire extinguishing agent in this example is: dissolve the solid foam fire extinguishing agent in water, wherein The mass fraction is 12.5wt‰, and the fire is extinguished by spraying foam from a foam gun.

[0073] Example 3

[0074] Embodiment 3 provides a solid foam fire extinguishing agent, and its preparation raw materials include, by weight: 30 parts, lauryl alcohol polyoxyethylene ether 60 parts, sodium lauryl sulfate 10 parts, α-olefin sulfonate sodium 10 parts, sodium carboxymethyl cellulose 0.5 parts, talc powder 5 parts, calcium chloride 5 parts.

[0075] Said The preparation method comprises the following steps:

[0076] a. Synthesis of intermediate product: under room temperature and in an inert gas atmosphere, perfluorooctanesulfonyl fluoride (CAS: 307-35-7) was added dropwise to a toluene solution of 3-dimethylaminopropylamine, and stirred while adding dropwise. After the addition was completed, stirring was continued for 2 hours, and then heated to 45°C and reacted at this temperature for 4 hours. After the solvent was evaporated, anhydrous ether was added, and the resulting solution was vacuum filtered to obtain a white precipitate, and the precipitate was washed with anhydrous ether to obtain an intermediate product;

[0077] b. Synthesis of target product: At room temperature, in an inert gas atmosphere, add the intermediate product to an acetonitrile solution of iodoethanol (CAS: 624-76-0), and reflux the resulting mixed solution at 80°C for 10 hours. After evaporating the solvent, add anhydrous ether, and vacuum filter the resulting solution to obtain a white precipitate. Wash the precipitate with anhydrous ether to obtain the target product.

[0078] This example also provides a method for preparing the solid foam fire extinguishing agent: Add lauryl alcohol polyoxyethylene ether, sodium lauryl sulfate, sodium α-olefin sulfonate, sodium carboxymethyl cellulose, talc and calcium chloride in sequence and grind into uniform solid powder to obtain the product.

[0079] The method of using the solid foam fire extinguishing agent in this example is: dissolve the solid foam fire extinguishing agent in water, wherein The mass fraction is 12.5wt‰, and the fire is extinguished by spraying foam from a foam gun.

[0080] Example 4

[0081] Embodiment 4 provides a solid foam fire extinguishing agent, which is different from Embodiment 1 in that after the solid foam fire extinguishing agent is dissolved in water, The mass fraction is 5.4wt‰.

[0082] Example 5

[0083] Embodiment 5 provides a solid foam fire extinguishing agent, which is different from Embodiment 1 in that after the solid foam fire extinguishing agent is dissolved in water, The mass fraction is 3.2wt‰.

[0084] Example 6

[0085] Example 6 provides a solid foam fire extinguishing agent, which is different from Example 1 in that after the solid foam fire extinguishing agent is dissolved in water, The mass fraction is 1.8wt‰.

[0086] Example 7

[0087] Example 7 provides a solid foam fire extinguishing agent, which is different from Example 1 in that after the solid foam fire extinguishing agent is dissolved in water, The mass fraction of an element is 1.0wt‰.

[0088] Example 8

[0089] Example 8 provides a solid foam fire extinguishing agent, which is different from Example 1 in that the raw materials for preparing the solid foam fire extinguishing agent are The weight parts are 18 parts.

[0090] Example 9

[0091] Example 9 provides a solid foam fire extinguishing agent, which is different from Example 1 in that the raw materials for preparing the solid foam fire extinguishing agent are The weight parts of 1,2-dimethoxy-1,4 ...

[0092] Example 10

[0093] Embodiment 10 provides a solid foam fire extinguishing agent, which is different from Embodiment 1 in that after the solid foam fire extinguishing agent is dissolved in water, The mass fraction is 0.8wt‰.

[0094] Performance Evaluation

[0095] The dissolved solid foam fire extinguishing agent obtained in Examples 1 to 10 was tested for foaming multiple, liquid separation time, fire extinguishing time and burning resistance time. The test was carried out in accordance with Appendix A of GB 15308-2006 "Foam Fire Extinguishing Agents", and the results are shown in Table 1.

[0096] Table 1

[0097]

[0098]

[0099] It can be seen from Examples 1-10 that the solid foam fire extinguishing agent provided in the present application can be rapidly dissolved in a short time, and under the joint action of the fluorocarbon surfactant and the hydrocarbon surfactant, the foam performance is qualified and the fire extinguishing effect is excellent.

[0100] Finally, it is pointed out that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid foam fire extinguishing agent, characterized in that: The raw materials for its preparation are as follows: 60 parts of fluorocarbon surfactant, 40 parts of lauryl alcohol polyoxyethylene ether, 10 parts of sodium dodecyl sulfate, 10 parts of sodium α-olefin sulfonate, 0.5 parts of sodium carboxymethyl cellulose, 5 parts of talc, and 5 parts of calcium chloride. The fluorocarbon surfactant is The method of using solid foam fire extinguishing agent is as follows: dissolve the solid foam fire extinguishing agent in water, wherein The mass fraction is 12.5wt%0, and the foam is sprayed by the foam gun to extinguish the fire; The preparation method of the solid foam fire extinguishing agent is as follows: , lauryl alcohol polyoxyethylene ether, sodium dodecyl sulfate, sodium α-olefin sulfonate, sodium carboxymethyl cellulose, talcum powder and calcium chloride are added in sequence and ground into a uniform solid powder to obtain.

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