CN110585644A - Foam extinguishing agent with efficient environment-friendly steaming-inhibiting function and preparation method thereof - Google Patents
Foam extinguishing agent with efficient environment-friendly steaming-inhibiting function 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
- A62D1/0064—Gels; Film-forming compositions
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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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- A62D1/0085—Foams containing perfluoroalkyl-terminated surfactant
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Abstract
The invention discloses a foam extinguishing agent with high-efficiency environment-friendly steaming-inhibiting function, which is characterized in that: comprises the following components in percentage by weight: 1-6% of a steaming inhibitor, 1-6% of a fluorocarbon surfactant, 4-16% of a hydrocarbon surfactant, 2-6% of a high-molecular thickening foam stabilizer, 4-10% of a cosolvent, 4-10% of a pour point depressant, 0.1-0.5% of a preservative and the balance of water. The foam extinguishing agent with the efficient environment-friendly evaporation inhibiting function, which can inhibit fuel volatilization, can improve the coverage inhibiting performance of the extinguishing agent, and can effectively prevent the volatilization of flammable liquid and oil products and the re-combustion of fire because a compact multi-phase composite film is formed at an oil interface when foam is sprayed to the oil surface.
Description
Technical Field
The invention relates to the technical field of fire extinguishing, in particular to a foam extinguishing agent with efficient, environment-friendly and steam-inhibiting functions and a preparation method thereof.
Background
In recent years, with the rapid development of economic construction and the enhancement of comprehensive strength in China, the petrochemical industry has been developed greatly. The storage tanks for petroleum and chemical products are built more and more. The large-scale tank body and tank area capacity and the centralized storage of a plurality of storage tanks increase the risk of fire, and if the fire happens, the difficulty of putting out the fire is high, the secondary fire and secondary disaster are easy to happen, and serious economic loss and casualties are caused.
The application of the oil product is also wider, and the development of the automobile industry brings material diversification, convenience and rapidness for transportation and trip. But also brings the danger of fire, such as multiple automobile fire accidents, and causes casualties and property loss.
The volatilization of oil products and local high-concentration oil steam are main reasons for re-combustion of oil fire, and how to inhibit the volatilization of the oil products is large enough to reach a crude oil storage tank and small enough to reach an oil supply system of an automobile, so that the method has important significance for preventing the oil fire. Therefore, there is also a need for effective foam coverage after tank fire open fires have been extinguished. If the fire storage tank is re-ignited due to insufficient protection of the foam cover, the previous work is abandoned. However, the conventional fire-fighting foam aims at extinguishing fire, has high liquid separation speed, is easy to defoam, has poor oil volatilization inhibition performance, and is easy to re-ignite.
The invention patent CN201610129840.7 discloses a preparation method of a short fluorocarbon chain (carbon 4) amphoteric-nonionic fluorine surfactant compound system and application thereof in an aqueous film-forming foam extinguishing agent, and the aqueous film-forming foam extinguishing agent constructed on the basis of the amphoteric-nonionic fluorine surfactant compound system has excellent fire extinguishing performance.
CN201810128789.7 discloses a cold-resistant water-soluble film-forming foam extinguishing agent, which is mainly used for preventing and extinguishing alcohol solvent fire, can be normally used at low temperature, does not contain PFOA/PFOS, has good product degradation performance, is fast and safe in degradation, and does not cause environmental pollution.
The fire extinguishing performance of the patent is good, but the fluorocarbon surfactant can only be used as a film forming agent in the fire extinguishing agent, can not well inhibit the volatilization of hot oil, and is easy to cause re-combustion to have defects.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a can restrain volatile high-efficient environmental protection of fuel and suppress fire extinguishing agent of evaporating function, can promote the cover inhibition performance of fire extinguishing agent, when the foam sprays to the oil level on, forms the heterogeneous complex film of compactness in oil interface department, can effectively prevent volatilizing of flammable liquid and oil, prevents the conflagration and reignites once more.
The technical scheme adopted by the invention for solving the problems is as follows: a foam extinguishing agent with high-efficiency environment-friendly steaming-inhibiting function is characterized in that: comprises the following components in percentage by weight: 1-6% of a steaming inhibitor, 1-6% of a fluorocarbon surfactant, 4-16% of a hydrocarbon surfactant, 2-6% of a high-molecular thickening foam stabilizer, 4-10% of a cosolvent, 4-10% of a pour point depressant, 0.1-0.5% of a preservative and the balance of water;
the steam suppressor is a nonionic fluorocarbon surfactant with a fluorocarbon chain at one end, a hydrocarbon chain at the other end and a polyoxyethylene chain structure in the middle, and the steam suppressor has a structural formula as follows:
Rf-(CH2CH2O)n-R，
wherein Rf is hexafluoropropylene oxide trimer or tetramer, tetrafluoroethylene trimer or tetramer, hexafluoropropylene dimer or trimer, R is C8-C18 alkyl, C8-C16 alkyl benzene radical, and n is 15-35.
Preferably, the fluorocarbon surfactant is one or two of perfluoroalkyl betaine surfactant and perfluoro polyoxypropylene quaternary ammonium salt surfactant.
Preferably, the hydrocarbon surfactant is one or optionally two or more of an amphoteric surfactant, an anionic surfactant and a nonionic surfactant.
Preferably, the amphoteric surfactant is cocamidopropyl betaine (CAB-35), lauramidopropyl betaine or dodecyl dimethyl betaine (B-12), the anionic surfactant is C8-C12 sodium alkyl sulfate (SDS), and the nonionic surfactant is C8-C10 Alkyl Polyglycoside (APG).
Preferably, the macromolecular thickening and foam stabilizing agent is one or optionally two or more of sodium alginate, sesbania gum, guar gum and hydroxymethyl, hydroxyethyl and hydroxypropyl cellulose.
Preferably, the cosolvent is one of ethylene glycol butyl ether or diethylene glycol butyl ether.
Preferably, the pour point depressant is one or optionally two or more of urea, ethylene glycol, propylene glycol, organic acid salt and inorganic salt.
Preferably, the preservative is one or optionally two or more of polycaproylguanidine hydrochloride, trichloro-2-hydroxy-diphenyl ether and sodium hydroxymethyl glycinate.
The technical scheme adopted by the invention for solving the problems is as follows: the preparation method of the foam extinguishing agent with the efficient, environment-friendly and evaporation-inhibiting functions is characterized in that metered water is added into a mixing kettle, stirring is started, and the temperature is controlled to be 20-40 ℃;
slowly adding pour point depressant and preservative, stirring until completely dissolving;
continuously adding the macromolecular thickening foam stabilizer, and stirring to obtain a homogeneous solution;
adding the cosolvent, the hydrocarbon surfactant, the fluorocarbon surfactant and the evaporation inhibitor in sequence, and stirring uniformly;
adjusting the pH value to 7.5-8.5, and stirring for 10 min.
Compared with the prior art, the invention has the advantages that: the fire extinguishing agent is prepared by self-synthesis of a nonionic fluorocarbon surfactant serving as a steaming suppression agent, the fluorocarbon surfactant is added into a foam fire extinguishing agent, the coverage suppression performance of the fire extinguishing agent can be improved, the molecular structure of the fluorocarbon surfactant has hydrophilic and lipophilic properties and hydrophobic and oleophobic amphiphilic properties, when foam is sprayed onto an oil surface, according to a similar compatibility principle, the fluorocarbon surfactant enters an oil layer at one end with a hydrocarbon chain, enters a water layer at the middle section with a polyoxyethylene chain, and the fluorocarbon chain is horizontal to an oil-water interface in a hydrophobic and oleophobic manner, so that a compact film is formed at the oil-water interface, and flammable liquid and oil volatilization can be effectively prevented. Not only can quickly extinguish the fire, but also can cover inflammable residues after the fire, effectively prevent the volatilization of inflammable liquids such as oil gas and the like, and greatly reduce the risk of reburning the fire. The fire extinguishing agent with high-efficiency steam-inhibiting performance can be obtained by compounding with other types of fluorocarbon surfactants, hydrocarbon surfactants, foam stabilizers, cosolvent, pour point depressants, preservatives and the like. Not only can rapidly extinguish A, B, E and F-type fires, but also can be used for foam covering on fire scenes to effectively inhibit volatilization of oil products. The fire extinguishing agent can extinguish and cover liquid fire, and can simultaneously extinguish solid-liquid and electric fires of automobiles and the like quickly and effectively, so that the natural and burning accidents of automobiles can be effectively controlled, and the loss of personnel and property is greatly reduced.
Detailed Description
The patent of the invention is further illustrated by reference to the examples.
Example 1:
the formula (6%) of the fire extinguishing agent with the efficient environment-friendly evaporation inhibiting function is as follows:
cocoyl propyl betaine CAB-3510%, betaine type fluorocarbon surfactant F11571.0%, steaming inhibitor 2.5%, ethylene glycol butyl ether 3.5%, ethylene glycol 4%, urea 5%, sodium alginate 0.5%, sodium hydroxymethyl glycinate 0.3%, and water 73.7%
The production process comprises the following steps:
(1) at 1m3710kg of water is added into the mixing kettle, stirring is started, and the temperature is controlled within the range of 20-40 ℃.
(2) Slowly adding 50kg of urea, 5kg of sodium alginate, 3kg of hydroxymethyl sodium glycinate and other solid raw materials into a mixing kettle in sequence, and uniformly stirring.
(3) 40kg of ethylene glycol, 35kg of ethylene glycol monobutyl ether, CAB-35100 kg, F115710 kg and a steaming-inhibiting agent 2 are sequentially added#25kg of the mixture is added into a mixing kettle and stirred uniformly.
(4) Washing the pipeline with the rest 27kg of water, adjusting the pH to 8.0 with 20% NaOH, stirring uniformly, and barreling to obtain the finished product.
And (3) performance detection:
according to GB15308-2006 standard, the foaming multiple is 7.8, the 25% liquid separation time is 5.2min, and the fire extinguishing time is 1.8 min. After the fire extinguishing is finished, the torch is moved above the oil pan every 15min, and the oil pan is ignited only in 120min, so that the evaporation suppression effect is obvious.
Steaming inhibitor 2#The preparation method comprises the following steps:
a. 100mL of tetrahydrofuran, 0.110mol of dodecanol polyoxyethylene ether-35189.9 g (0.110mol) and 10.6g (0.105mol) of triethylamine are added into a 500mL three-necked flask provided with a reflux condenser with a drying tube, a thermometer and a dropping funnel, and a stirrer is started to uniformly mix the materials; 66.4g (0.10mol) of hexafluoropropylene oxide tetramer is slowly dropped from a dropping funnel, and the dropping speed is controlled to keep the temperature in the reaction bottle below 60 ℃; after the addition of the hexafluoropropylene oxide tetramer was completed, the mixture was heated to slightly boiling (about 66 ℃ C.), stirring was continued for 8 hours, about 25g of anhydrous sodium sulfate was added, stirring was stopped, the mixture was left overnight, and the solution was filtered into a 1L three-necked flask.
b. A1L three-necked flask was equipped with a distillation head, a condenser and a thermometer, and distillation was carried out to distill off tetrahydrofuran. And adding 510g of 10 mass percent ethylene glycol monobutyl ether solution to obtain 27-30 mass percent fluorocarbon surfactant. According to performance detection, when the mass percent is 1.0%, the surface tension is 18.8 mN/m; 19.3mN/m when the mass percent is 0.5%; when the mass percentage is 0.1%, the concentration is 22.5 mN/m. Meanwhile, the fluorocarbon surfactant has very good water solubility.
c. Adding the fluorocarbon surfactant with the mass percentage of 2% into 6% type aqueous film-forming foam extinguishing agent, and uniformly mixing. Detecting according to GB15308-2006 standard, and extinguishing for 1.8 min. After the fire extinguishing is finished, the torch is moved above the oil pan every 15min, and when the time is 120min, the oil pan starts to ignite, so that the fire suppression effect is very good.
Example 2:
the formula (3%) of the fire extinguishing agent with the efficient environment-friendly steaming suppression function is as follows:
cocoyl propyl betaine CAB-3510%, alkyl glycoside APG 08108%, betaine type fluorocarbon surfactant F11571.8%, and inhibitor 1#5 percent of ethylene glycol monobutyl ether 7 percent, 8 percent of glycerol, 10 percent of urea, 0.5 percent of cyanic acid gum, 0.3 percent of polyhexamethylene guanidine hydrochloride and 49.4 percent of water
The production process comprises the following steps:
(1) 470kg of water were added to a 1m3 mixing kettle, and stirring was started.
(2) Slowly adding 100kg of urea, 3kg of polyhexamethylene guanidine hydrochloride, 5kg of Tianyanjiao and other solid raw materials into a mixing kettle in sequence, and uniformly stirring.
(3) 80kg of glycerin, 70kg of butyl cellosolve, CAB-35100 kg, APG 081080 kg, F115718 kg and a vapor inhibitor 1 are sequentially added#50kg of the mixture is added into a mixing kettle and stirred uniformly.
(4) Washing the pipeline with the rest 24kg of water, adjusting the pH value to 8.5 with 20% NaOH, stirring uniformly, and barreling to obtain the finished product.
And (3) performance detection:
according to GB15308-2006 standard, the foaming multiple is 6.8, the 25% liquid separation time is 4.7min, and the fire extinguishing time is 2.2 min. After the fire extinguishing is finished, the fire handle is moved above the oil pan every 15min, and the oil pan starts to catch fire only when the fire handle is in 90 min.
Steaming inhibitor 1#The preparation method comprises the following steps:
a. 100mL of tetrahydrofuran, 0.105mol of dodecanol polyoxyethylene ether-25135.0 g (0.105mol) and 10.6g (0.105mol) of triethylamine are added into a 500mL three-necked flask provided with a reflux condenser with a drying tube, a thermometer and a dropping funnel, and a stirrer is started to uniformly mix the materials; slowly dripping 40.0g (0.10mol) of tetrafluoroethylene tetramer from a dropping funnel, and controlling the dripping speed to keep the temperature in the reaction bottle below 60 ℃; after the addition of the tetrafluoroethylene tetramer was completed, the mixture was heated to slightly boiling (about 66 ℃ C.), stirring was continued for 6 hours, about 20g of anhydrous sodium sulfate was added, the stirring was stopped, the mixture was left overnight, and the solution was filtered into a 1L three-necked flask.
b. A1L three-necked flask was equipped with a distillation head, a condenser and a thermometer, and distillation was carried out to distill off tetrahydrofuran. Adding 450g of 25 mass percent ethylene glycol monobutyl ether solution to obtain 27-30 mass percent fluorocarbon surfactant. Through performance detection, when the mass percent is 1.0%, the surface tension is 20.2 mN/m; when the mass percent is 0.5 percent, the Mn/m is 21.7 mN/m; the content of the amino acid was 24.3mN/m when the mass percentage was 0.1%.
c. Adding 5 percent by mass of the fluorocarbon surfactant into 3 percent of type aqueous film-forming foam extinguishing agent, and uniformly mixing. The fire extinguishing time is 2.2min according to GB15308-2006 standard detection. After the fire extinguishing is finished, the fire handle is moved above the oil pan every 15min, and the oil pan starts to catch fire only when the fire handle is in 90 min.
Example 3:
the formula (6%) of the fire extinguishing agent with the efficient environment-friendly evaporation inhibiting function is as follows:
cocoyl propyl betaine CAB-3510%, betaine type fluorocarbon surfactant F11571.0%, and inhibitor 4#2.5 percent of ethylene glycol monobutyl ether, 3.5 percent of ethylene glycol, 4 percent of ethylene glycol, 5 percent of urea, 0.8 percent of sodium alginate, 0.3 percent of trichloro-2-hydroxy-diphenyl ether and 72.9 percent of water
The production process comprises the following steps:
(1) at 1m3710kg of water was added to the mixing vessel of (1), and stirring was started.
(2) 50kg of urea, 8kg of sodium alginate, 3kg of trichloro-2-hydroxy-diphenyl ether and other solid raw materials are sequentially and slowly added into a mixing kettle and stirred uniformly.
(3) 40kg of ethylene glycol, 35kg of ethylene glycol monobutyl ether, CAB-35100 kg, F115710 kg and a steaming-inhibiting agent 4 are sequentially added#25kg of the mixture is added into a mixing kettle and stirred uniformly.
(4) Washing the pipeline with the rest 19kg of water, adjusting the pH to 8.0 with 20% NaOH, stirring uniformly, and barreling to obtain the finished product.
And (3) performance detection:
according to GB15308-2006 standard, the foaming multiple is 7.5, the 25% liquid separation time is 5.5min, and the fire extinguishing time is 2.3 min. After the fire extinguishing is finished, the torch is moved above the oil pan every 15min, and the oil pan starts to catch fire only in 135min, so that the evaporation suppression effect is very good.
Steaming inhibitor 4#The preparation method comprises the following steps:
a. 100mL of isopropyl ether, 35144.6 g (0.11mol) of palmitol polyoxyethylene ether and 4.4g (0.105mol) of sodium hydroxide are added into a 500mL three-necked flask provided with a reflux condenser with a drying tube, a thermometer and a dropping funnel, and a stirrer is started to uniformly mix the materials; 66.4g (0.10mol) of hexafluoropropylene oxide trimer is slowly dropped from the dropping funnel, and the dropping speed is controlled to keep the temperature in the reaction bottle below 60 ℃; after the addition of the hexafluoropropylene oxide trimer was completed, the mixture was heated to slight boiling (about 69 ℃), stirring was continued for 8 hours, about 30g of anhydrous sodium sulfate was added, stirring was stopped, the mixture was left overnight, and the solution was filtered into a 1L three-necked flask.
b. A1L three-necked flask was equipped with a distillation head, a condenser and a thermometer, and distillation was carried out to distill off tetrahydrofuran. And adding 510g of 10 mass percent ethylene glycol monobutyl ether solution to obtain 27-30 mass percent fluorocarbon surfactant. When the mass percent is 1.0 percent, the surface tension is 19.0 mN/m; 19.9mN/m when the mass percent is 0.5%; the concentration of the amino acid was 21.8mN/m at 0.1% by mass. Meanwhile, the fluorocarbon surfactant has very good water solubility and low surface tension.
c. Adding 4 percent of fluorocarbon surfactant by mass into 3 percent of type aqueous film-forming foam extinguishing agent, and uniformly mixing. The fire extinguishing time is 2.3min according to GB15308-2006 standard detection. When the fire extinguishing is finished, the fire handle is moved above the oil pan every 15min, and the oil pan starts to catch fire only at 135 min.
Example 4:
the formula (3%) of the fire extinguishing agent with the efficient environment-friendly steaming suppression function is as follows:
10 percent of cocoyl propyl betaine CAB, 10 percent of alkyl glycoside APG 08108 percent, betaine type fluorocarbon surfactant F11571.8 percent and evaporation inhibitor 3 percent#5 percent of ethylene glycol monobutyl ether 7 percent, 8 percent of glycerol, 10 percent of urea, 0.5 percent of cyanogen rubber, 0.3 percent of hydroxymethyl sodium glycinate and 49.4 percent of water
The production process comprises the following steps:
(1) at 1m3470kg of water was added to the mixing kettle, and stirring was started.
(2) Slowly adding 100kg of urea, 3kg of sodium hydroxymethyl glycinate, 5kg of Tianyanjiao and other solid raw materials into a mixing kettle in sequence, and uniformly stirring.
(3) 80kg of glycerin, 70kg of butyl cellosolve, CAB-35100 kg, APG 081080 kg, F115718 kg and a vapor inhibitor 3 are sequentially added#50kg of the mixture is added into a mixing kettle and stirred uniformly.
(4) Washing the pipeline with the rest 24kg of water, adjusting the pH value to 7.5 with 20% NaOH, stirring uniformly, and barreling to obtain the finished product.
And (3) performance detection:
according to GB15308-2006 standard, the foaming multiple is 7.0, the 25% liquid separation time is 5.7min, and the fire extinguishing time is 2.7 min. After the fire was extinguished, the torch was moved over the oil pan every 15min, and at 75min, the oil pan started to catch fire.
The preparation method of the evaporation inhibitor No. 3 comprises the following steps:
a. 100mL of isopropyl ether, 0.12mol of dodecanol polyoxyethylene ether-25154.3 g (0.12mol) and 10.6g (0.105mol) of triethylamine are added into a 500mL three-necked flask provided with a reflux condenser with a drying tube, a thermometer and a dropping funnel, and a stirrer is started to uniformly mix the components; slowly dropping 45.0g (0.10mol) of hexafluoropropylene trimer from a dropping funnel, and controlling the dropping speed to keep the temperature in the reaction bottle below 60 ℃; after the addition of the hexafluoropropylene trimer was completed, the mixture was heated to slight boiling (about 69 ℃), stirring was continued for 10 hours, about 20g of anhydrous sodium sulfate was added, stirring was stopped, the mixture was left overnight, and the solution was filtered into a 1L three-necked flask.
b. A1L three-necked flask was equipped with a distillation head, a condenser and a thermometer, and distillation was carried out to distill off tetrahydrofuran. Adding 450g of ethylene glycol monobutyl ether solution with the mass fraction of 40% to obtain the fluorocarbon surfactant with the mass fraction of 27-30%. Through performance detection, when the mass percent is 1.0%, the surface tension is 19.8 mN/m; 20.4mN/m when the mass percent is 0.5%; the content of the amino acid was 25.1mN/m at 0.1% by mass. The fluorocarbon surfactant is slightly soluble in water, easily soluble in ethanol and acetone, and needs a certain amount of organic solvent.
c. Adding the fluorocarbon surfactant with the mass fraction of 3% into the 3% type aqueous film-forming foam extinguishing agent, and uniformly mixing. The fire extinguishing time is 2.7min according to GB15308-2006 standard detection. After the fire extinguishing is finished, the torch is moved above the oil pan every 15min, and the oil pan starts to catch fire only 75min later.
Wherein, the mass fraction and the surface tension of the nonionic fluorocarbon surfactant (evaporation inhibitor) are summarized as follows:
the foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.
Claims (9)
1. A foam extinguishing agent with high-efficiency environment-friendly steaming-inhibiting function is characterized in that: comprises the following components in percentage by weight: 1-6% of a steaming inhibitor, 1-6% of a fluorocarbon surfactant, 4-16% of a hydrocarbon surfactant, 2-6% of a high-molecular thickening foam stabilizer, 4-10% of a cosolvent, 4-10% of a pour point depressant, 0.1-0.5% of a preservative and the balance of water;
the steam suppressor is a nonionic fluorocarbon surfactant with a fluorocarbon chain at one end, a hydrocarbon chain at the other end and a polyoxyethylene chain structure in the middle, and the steam suppressor has a structural formula as follows:
Rf-(CH2CH2O)n-R，
wherein Rf is hexafluoropropylene oxide trimer or tetramer, tetrafluoroethylene trimer or tetramer, hexafluoropropylene dimer or trimer, R is C8-C18 alkyl, C8-C16 alkyl benzene radical, and n is 15-35.
2. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 1, characterized in that: the fluorocarbon surfactant is one or two of perfluoroalkyl betaine surfactant and perfluoro polyoxypropylene quaternary ammonium salt surfactant.
3. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 1, characterized in that: the hydrocarbon surfactant is one or two or more of an amphoteric surfactant, an anionic surfactant and a nonionic surfactant.
4. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 3, characterized in that: the amphoteric surfactant is cocamidopropyl betaine (CAB-35), lauramidopropyl betaine or dodecyl dimethyl betaine (B-12), the anionic surfactant is C8-C12 sodium alkyl sulfate (SDS), and the nonionic surfactant is C8-C10 Alkyl Polyglycoside (APG).
5. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 1, characterized in that: the macromolecule thickening foam stabilizer is one or optionally two or more of sodium alginate, sesbania gum, guar gum and hydroxymethyl, hydroxyethyl and hydroxypropyl cellulose.
6. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 1, characterized in that: the cosolvent is one of ethylene glycol butyl ether or diethylene glycol butyl ether.
7. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 1, characterized in that: the pour point depressant is one or two or more of urea, ethylene glycol, propylene glycol, organic acid salt and inorganic salt.
8. The foam extinguishing agent with high-efficiency environment-friendly steam suppression function according to claim 1, characterized in that: the preservative is one or two or more of polycaproylguanidine hydrochloride, trichloro-2-hydroxy-diphenyl ether and sodium hydroxymethyl glycinate.
9. The preparation method of the foam extinguishing agent with the high-efficiency environment-friendly evaporation inhibiting function according to any one of claims 1 to 8, characterized in that metered water is added into a mixing kettle, and stirring is started; the temperature is controlled between 20 ℃ and 40 ℃.
Slowly adding pour point depressant and preservative, stirring until completely dissolving;
continuously adding the macromolecular thickening foam stabilizer, and stirring to obtain a homogeneous solution;
adding the cosolvent, the hydrocarbon surfactant, the fluorocarbon surfactant and the evaporation inhibitor in sequence, and stirring uniformly;
adjusting the pH value to 7.5-8.5, and stirring for 10 min.
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| CN111569349A (en) * | 2020-06-23 | 2020-08-25 | 国网电力科学研究院有限公司 | Environment-friendly degradable aqueous film-forming foam extinguishing agent and preparation method and application thereof |
| CN113028297A (en) * | 2021-02-07 | 2021-06-25 | 广东莱雅新化工科技有限公司 | Pipeline leakage detection agent and preparation method thereof |
| CN115350437A (en) * | 2022-06-28 | 2022-11-18 | 宁波能林消防器材有限公司 | Environment-friendly anti-solubility foam extinguishing agent with wide adaptability and preparation method thereof |
| CN116510225A (en) * | 2023-05-31 | 2023-08-01 | 上海应用技术大学 | Smoke-suppression type environment-friendly foam extinguishing agent and preparation method thereof |
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| CN111569349A (en) * | 2020-06-23 | 2020-08-25 | 国网电力科学研究院有限公司 | Environment-friendly degradable aqueous film-forming foam extinguishing agent and preparation method and application thereof |
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| CN115350437A (en) * | 2022-06-28 | 2022-11-18 | 宁波能林消防器材有限公司 | Environment-friendly anti-solubility foam extinguishing agent with wide adaptability and preparation method thereof |
| CN115350437B (en) * | 2022-06-28 | 2024-06-11 | 宁波能林消防器材有限公司 | Widely-applicable environment-friendly type anti-soluble foam extinguishing agent and preparation method thereof |
| CN116510225A (en) * | 2023-05-31 | 2023-08-01 | 上海应用技术大学 | Smoke-suppression type environment-friendly foam extinguishing agent and preparation method thereof |
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