CN115463371A - Environment-friendly composite foam extinguishing agent and preparation method thereof - Google Patents
Environment-friendly composite foam extinguishing agent and preparation method thereof Download PDFInfo
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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
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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
- A62D1/0028—Liquid extinguishing substances
- A62D1/0035—Aqueous solutions
- A62D1/0042—"Wet" water, i.e. containing 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
- A62D1/0071—Foams
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Abstract
The invention provides an environment-friendly composite foam extinguishing agent and a preparation method thereof, wherein the environment-friendly composite foam extinguishing agent comprises functional raw materials and water, the functional raw materials account for 16-50% of the water by weight percent, and the functional raw materials comprise 45-130 parts of foaming agent, 1-5 parts of stabilizing agent, 6-10 parts of thickening agent, 4-10 parts of degradable fluorocarbon surfactant, 20-65 parts of anti-burning agent, 60-90 parts of antifreeze agent, 5-10 parts of cosolvent and 0.3-7 parts of auxiliary agent by weight percent, wherein the foaming agent comprises 1-5 weight percent of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and betaine type surfactant mixture, the structural formula of the degradable fluorocarbon surfactant is Rf-X-Y, wherein Rf is perfluorinated alkyl, X is fluoroolefin, and Y is alcohol group. Through the synergistic effect of the polyglycerol ester, the alkyl glycoside, the linear fatty alcohol polyoxyethylene ether sulfate and the betaine, the fire extinguishing agent can generate uniform and stable foam holes in water, so that the fire extinguishing performance is improved.
Description
Technical Field
The invention relates to the technical field of synthesis of fire-fighting reagents, in particular to an environment-friendly composite foam extinguishing agent and a preparation method thereof.
Background
It is well known to extinguish fires, particularly on a large scale. For a long time, people mainly use water as a fire extinguisher. The water is a fire extinguishing agent with abundant source, convenient use and low price. However, secondary disasters such as water damage in fire fields after fire extinguishment are also obvious; with the increasing shortage of water resources throughout the earth, the fire extinguishing efficiency of water is becoming less and less satisfactory. Especially with the development of production and life, more and more fire disasters can not be extinguished by water or can not be extinguished by only water, and people also develop fire-fighting technologies vigorously, especially depending on the progress of the whole social science and technology, and gradually develop and develop novel fire extinguishing agents such as foam, alkyl halide gas, carbon dioxide gas, dry powder and the like. Nowadays, people have higher and higher requirements on fire extinguishing agents, and the fire extinguishing agents are required to be capable of extinguishing fire efficiently, and are also required to be environment-friendly, energy-saving, harmless and pollution-free. The foam fire extinguisher is the first substitute of the chloralkane fire extinguisher by the United nations environmental agency, and is listed as an 'alternative route' and a key product of a Halon fire extinguisher by China.
In particular, the foam extinguishing agent has good performance on fire disasters caused by nonpolar oil liquid. However, because ethanol in the ethanol gasoline is polar liquid and is very easy to dissolve in water, common foam is eaten quickly when contacting the ethanol, so that a foam layer for isolating oxygen is difficult to form on the surface of the ethanol gasoline, and the aim of extinguishing fire cannot be achieved. Therefore, the foam extinguishing agent is usually added with fluorocarbon surfactant, and the non-polar group of the fluorocarbon surfactant has hydrophobic property and unique oleophobic property, so that the foam extinguishing agent has excellent effect on oil liquid fire.
However, the fluorocarbon surfactant has persistence, toxicity, bioaccumulation and difficult degradation, and after entering the environment, the fluorocarbon surfactant consumes dissolved oxygen in water, generates toxic effect on aquatic plants, is difficult to biodegrade and persists in the environment. In view of environmental problems, the relevant government has urgently proposed the development of alternative fluorosurfactants for fire extinguishing foams which are biodegradable and environmentally friendly.
Disclosure of Invention
The invention aims to provide an environment-friendly composite foam extinguishing agent and a preparation method thereof, the environment-friendly composite foam extinguishing agent has biodegradability, high foaming times and high foaming speed, and is particularly suitable for extinguishing oil liquid.
In order to achieve the first object, the first aspect of the present invention provides an environment-friendly composite foam fire extinguishing agent, which comprises functional raw materials and water, wherein the functional raw materials account for 16-50% of the water by weight, and comprise, by weight, 45-130 parts of a foaming agent, 1-5 parts of a stabilizer, 6-10 parts of a thickener, 4-10 parts of a degradable fluorocarbon surfactant, 20-65 parts of a burning resistant agent, 60-90 parts of an antifreeze agent, 5-10 parts of a cosolvent, and 0.3-7 parts of an auxiliary agent, wherein the foaming agent comprises, by weight, 1-5.
Compared with the prior art, in the environment-friendly composite foam extinguishing agent, the foaming agent is a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and betaine type surfactant in a weight ratio of 0.5-5. The linear fatty alcohol polyoxyethylene ether sulfate is an anionic surfactant with biodegradability, and the betaine surfactant is an amphoteric surfactant with biodegradability. The foaming times and the fire extinguishing speed of the fire extinguishing agent can be greatly improved by adding the amphoteric surfactant on the basis of the anionic surfactant and the nonionic surfactant to utilize the anti-particle effect, and the fire extinguishing agent can generate uniform and stable foam pores in water through the synergistic effect of the polyglycerol ester, the alkyl glycoside, the linear fatty alcohol polyoxyethylene ether sulfate and the betaine surfactant, so that the fire extinguishing performance is improved, and the high-efficiency foaming times, the fire extinguishing speed and the fire extinguishing performance are particularly suitable for extinguishing oil liquid. In addition, the degradable fluorocarbon surfactant has the structural formula of Rf-X-Y, hydrophilic group alcohol groups are introduced by modifying on the basis of the traditional fluorocarbon surfactant, the alcohol groups can improve the foaming performance of foam, and the perfluorinated alkyl of Rf and the fluoroolefin of X have oleophobic properties, so that a foam layer for isolating oxygen is formed on the surface of oil, the aim of extinguishing fire of oil liquid can be fulfilled, the hydrophilic group can improve the degradation performance of the oil liquid, and the oil liquid enters the environment after extinguishing fire and is easily biodegraded under the action of water, bacteria and oxygen in the environment, so that the influence of the oil liquid on the environment is greatly reduced.
As a better technical scheme, the betaine type surfactant is N-alkyl betaine and/or alpha-alkyl betaine, has better wettability and emulsibility, and has better compatibility with other surfactants.
As a better technical scheme, the stabilizing agent is C 8 ～C 22 The aliphatic alcohol and the stabilizer can stabilize cells generated at different viscosity stages, so that the cells can stably grow to proper sizes.
As a better technical scheme, the thickening agent is carboxymethyl cellulose and/or hydroxyethyl cellulose, the water solubility of the thickening agent is better, the thickening agent can be biodegraded, the viscosity of the foam extinguishing agent can be adjusted by the thickening agent, and the phenomenon that the growth of foam holes is influenced due to too high viscosity of a foaming system or the foam holes are broken due to too low viscosity of the foaming system is avoided.
As a better technical scheme, the degradable fluorocarbon surfactant is CF 3 -CF＝CF-CH 2 OH、(CF 3 ) 2 CF-CF＝CF-CF(CF 3 )CH 2 OH and (CF) 3 ) 2 CF-CF＝(CF 3 )C-CH 2 OCH 2 CH 2 One of OH.
As a better technical scheme, the antifreeze is at least one of ethanol, glycol, glycerol, isopropanol and n-butyl alcohol, and the antifreeze can be added to reduce the freezing point of the foam extinguishing agent and improve the antifreeze capacity.
As a better technical scheme, the cosolvent is at least one of edible gelatin, guar gum, xanthan gum, alginate, konjac gum, agar, carrageenan and pectin. The edible gum is selected as the cosolvent, and the high molecular substances with the gel property have the biodegradation function, can resist the damage of polar liquid to foam during fire extinguishing, and can ensure that the foam extinguishing agent has the function of extinguishing polar liquid fire.
As a preferred technical solution, the auxiliary agent is at least one of a chelating agent, a preservative and a buffer. The chelating agent may be at least one of sodium hexametaphosphate, trisodium phosphate, disodium EDTA, and N-methylpyrrolidone, and serves to soften water and inhibit coagulation. The preservative is at least one of phenol, xylenol and sodium benzoate, and can inhibit the growth of microorganisms in the foam extinguishing agent. The buffer is sodium bicarbonate solution or citric acid-sodium citrate solution.
As a preferable technical scheme, the anti-burning agent is urea, formamide or ammonium polyphosphate, which can be decomposed into non-combustible gas at high temperature to dilute the oxygen concentration, thereby being helpful for prolonging the anti-burning time. The urea is preferred, and the urea can also improve the solubility and stability of the thickening agent and the auxiliary agent in the foam extinguishing agent.
The invention provides a preparation method of an environment-friendly composite foam extinguishing agent in a second aspect, which comprises the following steps: the foaming agent, the degradable fluorocarbon surfactant, the anti-burning agent and the cosolvent in the formula amount are mixed and stirred in the water, and then the stabilizer, the thickening agent, the anti-freezing agent and the auxiliary agent are added and uniformly mixed to obtain the flame retardant.
Detailed Description
The components in the environment-friendly composite foam extinguishing agent are all biodegradable substances, so the environment-friendly composite foam extinguishing agent is environment-friendly. The water-soluble functional material comprises 16-50 wt% of functional raw materials and water, and specifically, the water-soluble functional material is not limited to 16%, 20%, 24%, 27%, 30%, 35%, 40%, 45% and 50%. The functional raw materials comprise, by weight, 45-130 parts of a foaming agent, 1-5 parts of a stabilizer, 6-10 parts of a thickening agent, 4-10 parts of a degradable fluorocarbon surfactant, 20-65 parts of an anti-burning agent, 60-90 parts of an antifreeze agent, 5-10 parts of a cosolvent and 0.3-7 parts of an auxiliary agent. Wherein, the foaming agent can be but is not limited to 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 80 parts, 90 parts, 100 parts, 110 parts, 115 parts, 120 parts, 125 parts and 130 partsAnd the weight ratio of the polyglycerol ester to the linear fatty alcohol polyoxyethylene ether sulfate to the betaine type surfactant is 0.5-5. The stabilizer can be but not limited to 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts and 5 parts, and the stabilizer is C8-C22 aliphatic alcohol, specifically dodecanol, tridecanol or pentadecanol. The thickener can be, but is not limited to, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, 10 parts, and the thickener is carboxymethyl cellulose and/or hydroxyethyl cellulose. The degradable fluorocarbon surfactant can be, but is not limited to, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, 10 parts. The degradable fluorocarbon surfactant has a structural formula of Rf-X-Y, wherein Rf is perfluorinated alkyl, X is fluoroolefin, and Y is alcohol group, specifically CF 3 -CF＝CF-CH 2 OH、(CF 3 ) 2 CF-CF＝CF-CF(CF 3 )CH 2 OH and (CF) 3 ) 2 CF-CF＝(CF 3 )C-CH 2 OCH 2 CH 2 One of OH. The burning-resistant agent can be, but is not limited to, 10 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts and 65 parts, and the burning-resistant agent is preferably urea, formamide or ammonium polyphosphate. The antifreeze agent can be, but is not limited to, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, and is at least one of ethanol, ethylene glycol, glycerol, isopropanol, and n-butanol. The cosolvent can be, but is not limited to, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 9 parts and 10 parts, and is at least one of edible gelatin, guar gum, xanthan gum, alginate, konjac gum, agar, carrageenan and pectin. The auxiliary agent may be, but not limited to, 0.3 parts, 0.5 parts, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, the auxiliary agent is at least one of a chelating agent, a preservative and a buffer, and the chelating agent may be at least one of sodium hexametaphosphate, trisodium phosphate, disodium EDTA, and N-methylpyrrolidone. The preservative may be at least one of phenol, xylenol, and sodium benzoate. The buffer can be sodium bicarbonate solution or citric acid-sodium citrate solutionAnd (4) liquid.
To better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to specific examples. It should be noted that the following implementation of the method is a further explanation of the present invention, and should not be taken as a limitation of the present invention.
Example 1
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and N-alkyl betaine mixture with the weight ratio of 1.
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine and CF 3 -CF＝CF-CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Example 2
The environment-friendly composite foam extinguishing agent comprises functional raw materials and water, wherein the functional raw materials account for 16 percent of the water by weight, and comprise 120 parts of foaming agent, 2 parts of dodecanol, 10 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 85 parts of glycerol, 9 parts of xanthan gum and 1 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and N-alkyl betaine in a weight ratio of (2).
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine and CF 3 -CF＝CF-CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water,adding dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt, and mixing.
Example 3
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 60 parts of foaming agent, 3 parts of dodecanol, 8 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 10 parts of an OH surfactant, 60 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and N-alkyl betaine according to a weight ratio of 3.
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine and CF 3 -CF＝CF-CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Example 4
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a polyglycerol ester, an alkyl glycoside, a linear fatty alcohol polyoxyethylene ether sulfate and an alpha-alkyl betaine mixture in a weight ratio of 1.
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, alpha-alkyl betaine and CF 3 -CF＝CF-CH 2 The OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Example 5
The environment-friendly composite foam extinguishing agent comprises a functional sourceThe functional raw materials account for 25 percent of the water by weight percent and comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl Cellulose and (CF) 3 ) 2 CF-CF＝CF-CF(CF 3 )CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and N-alkyl betaine in a weight ratio of 1.
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine and (CF) 3 ) 2 CF-CF＝CF-CF(CF 3 )CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Example 6
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of tridecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of a mixture of glycerol and ethylene glycol (the weight ratio is 1.
The preparation method comprises the following steps: mixing polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine mixture, and CF 3 -CF＝CF-CH 2 The OH surfactant, the urea and the xanthan gum are mixed and stirred in water, and then the tridecanol, the carboxymethyl cellulose, the glycerol, the glycol and the EDTA disodium salt are added and mixed evenly to obtain the product.
Example 7
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and waterThe raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of hydroxyethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of guar gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and N-alkyl betaine according to the weight ratio of 1.
The preparation method comprises the following steps: mixing the formula amount of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine mixture, and CF 3 -CF＝CF-CH 2 The OH surfactant, the urea and the guar gum are mixed and stirred in water, and then the dodecanol, the hydroxyethyl cellulose, the glycerol and the EDTA disodium salt are added and mixed evenly to obtain the product.
Example 8
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 1.5 parts of xylenol, wherein the foaming agent comprises a polyglycerol ester, an alkyl glycoside, a linear fatty alcohol polyoxyethylene ether sulfate and an N-alkyl betaine mixture in a weight ratio of 1.
The preparation method comprises the following steps: the formula amount of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine, CF 3 -CF＝CF-CH 2 The OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and xylenol are added and mixed uniformly to obtain the product.
Example 9
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum, 0.5 part of EDTA disodium salt and xylenol1 part of citric acid-sodium citrate solution and 2 parts of citric acid-sodium citrate solution, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol-polyoxyethylene ether sulfate and N-alkyl betaine, wherein the weight ratio of the polyglycerol ester to the alkyl glycoside is 1.
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine and CF 3 -CF＝CF-CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol, EDTA disodium salt, xylenol and citric acid-sodium citrate solution are added and mixed uniformly to obtain the product.
Comparative example 1
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CF 3 6 parts of a surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and N-alkyl betaine according to the weight ratio of 1.
The preparation method comprises the following steps: the formula amounts of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, N-alkyl betaine and CF 3 -CF＝CF-CF 3 The surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Comparative example 2
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester and alkyl glucoside in a weight ratio of 1.
The preparation method comprisesComprises the following steps: mixing the formula amount of polyglycerol ester, alkyl glycoside, CF 3 -CF＝CF-CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Comparative example 3
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a polyglycerol ester, an alkyl glucoside and an N-alkyl betaine mixture in a weight ratio of 1.
The preparation method comprises the following steps: mixing polyglycerol ester, alkyl glycoside, N-alkyl betaine, and CF 3 -CF＝CF-CH 2 The OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
Comparative example 4
The environment-friendly composite foam extinguishing agent comprises 25 wt% of functional raw materials and water, wherein the functional raw materials comprise 80 parts of foaming agent, 3 parts of dodecanol, 6 parts of carboxymethyl cellulose and CF 3 -CF＝CF-CH 2 6 parts of an OH surfactant, 45 parts of urea, 70 parts of glycerol, 7 parts of xanthan gum and 0.5 part of EDTA disodium salt, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside and linear fatty alcohol-polyoxyethylene ether sulfate in a weight ratio of 1.
The preparation method comprises the following steps: mixing the formula amount of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate, CF 3 -CF＝CF-CH 2 OH surfactant, urea and xanthan gum are mixed and stirred in water, and then dodecanol, carboxymethyl cellulose, glycerol and EDTA disodium salt are added and mixed uniformly to obtain the product.
The foam extinguishants of examples 1 to 9 and comparative examples 1 to 4 were subjected to the relevant performance tests in accordance with national standards GB15308-2006 foam extinguishant and GB27897-2001 class A foam extinguishant, and the test results are shown in Table 1.
From the results in table 1, it can be seen that when the degradable fluorocarbon surfactant with the structural formula of Rf-X-Y is used and the mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and betaine surfactant is used as the foaming agent, the foam fire extinguishing agent has the best performance, and the synergistic effect of the polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and betaine surfactant may cause the fire extinguishing agent to generate uniform and stable cells in water, thereby improving the fire extinguishing performance, and the efficient foaming ratio, fire extinguishing speed and fire extinguishing performance thereof.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it is not limited to the embodiments, and those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The environment-friendly composite foam extinguishing agent is characterized by comprising functional raw materials and water, wherein the functional raw materials account for 16-50% of the water by weight percent, and the functional raw materials comprise, by weight, 45-130 parts of a foaming agent, 1-5 parts of a stabilizer, 6-10 parts of a thickening agent, 4-10 parts of a degradable fluorocarbon surfactant, 20-65 parts of an anti-burning agent, 60-90 parts of an antifreeze agent, 5-10 parts of a cosolvent and 0.3-7 parts of an auxiliary agent, wherein the foaming agent comprises a mixture of polyglycerol ester, alkyl glycoside, linear fatty alcohol polyoxyethylene ether sulfate and betaine type surfactant in a weight ratio of 0.5-5.
2. The environment-friendly composite foam fire extinguishing agent as recited in claim 1, wherein the betaine type surfactant is N-alkyl betaine and/or α -alkyl betaine.
3. The environment-friendly composite foam extinguishing agent according to claim 1, wherein the stabilizer is C 8 ～C 22 The aliphatic alcohol of (1).
4. The environment-friendly composite foam fire extinguishing agent according to claim 1, wherein the thickener is carboxymethyl cellulose and/or hydroxyethyl cellulose.
5. The environment-friendly composite foam extinguishing agent according to claim 1, wherein the degradable fluorocarbon surfactant is CF 3 -CF＝CF-CH 2 OH、(CF 3 ) 2 CF-CF＝CF-CF(CF 3 )CH 2 OH and (CF) 3 ) 2 CF-CF＝(CF 3 )C-CH 2 OCH 2 CH 2 One of OH.
6. The environment-friendly composite foam fire extinguishing agent according to claim 1, wherein the antifreeze agent is at least one of ethanol, ethylene glycol, glycerol, isopropanol and n-butanol.
7. The environment-friendly composite foam extinguishing agent according to claim 1, wherein the cosolvent is at least one of edible gelatin, guar gum, xanthan gum, alginate, konjac gum, agar, carrageenan and pectin.
8. The environment-friendly composite foam fire extinguishing agent according to claim 1, wherein the auxiliary agent is at least one of a chelating agent, a preservative and a buffering agent.
9. The environment-friendly composite foam fire extinguishing agent according to claim 1, wherein the anti-burning agent is urea, formamide or ammonium polyphosphate.
10. The method for preparing environment-friendly composite foam fire extinguishing agent according to any one of claims 1 to 9, characterized by comprising the steps of: the foaming agent, the degradable fluorocarbon surfactant, the anti-burning agent and the cosolvent in the formula amount are mixed and stirred in the water, and then the stabilizer, the thickening agent, the anti-freezing agent and the auxiliary agent are added and uniformly mixed to obtain the flame retardant.
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| CN202111288298.7A CN115463371B (en) | 2021-11-02 | 2021-11-02 | Environment-friendly composite foam extinguishing agent and preparation method thereof |
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