CN114748828A - Efficient environment-friendly NP-foam extinguishing agent and preparation method thereof - Google Patents
Efficient environment-friendly NP-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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Abstract
The invention discloses a high-efficiency environment-friendly NP-foam extinguishing agent and a preparation method thereof, wherein the extinguishing agent comprises the following components in parts by weight: 3-12 parts of a compound surfactant, 10-150 parts of nano particles, 0.3-1 part of a stabilizer, 15-30 parts of a dispersant, 3-9 parts of an antifreeze agent, 1-10 parts of a suspending agent and the balance of water, wherein the total mass part of each component is 1000 parts; the method prepares the nano particles into suspension and then evenly mixes the suspension with the compound surfactant solution. The fire extinguishing agent is added with the short-chain fluorocarbon surfactant or the compound surfactant compounded by the organosilicon surfactant and the hydrocarbon surfactant to form a compact foam layer and a closed water film layer, and the stability and the heat insulation performance of the foam are improved by combining the addition of the nano particles, so that the fire extinguishing agent is efficient, environment-friendly and suitable for solid and liquid fires; the method of the invention improves the dispersion effect and the foam stability of the nano particles in other components, and is beneficial to the fire extinguishing and controlling performance.
Description
Technical Field
The invention belongs to the technical field of foam fire extinguishing agents, and particularly relates to a high-efficiency environment-friendly NP-foam extinguishing agent capable of extinguishing liquid (B-type) fire and being used for solid (A-type) fire and a preparation method thereof.
Background
With the acceleration of the urbanization process, various large and ultra-large public buildings and key special projects with complex structures and functions are continuously emerged; the continuous development of modern industry and the number of industrial significant hazard sources are increasing day by day. Once a fire disaster happens to the places, large-scale personnel death and group injuries and huge property loss are easily caused, and the society is strongly shocked. The foam fire extinguishing technology has excellent performances in various aspects such as high fire extinguishing efficiency, re-ignition resistance and the like, plays an important role in fire extinguishing actual combat, and is a fire extinguishing agent variety widely stored and used by fire fighting troops and petrochemical enterprises at present.
The foam extinguishing agent is prepared by mixing water, surfactant, foaming agent, stabilizer and other assistants with air in a fixed ratio through special fire-fighting facilities or equipment and spraying for foaming. According to the mixing ratio of the foam liquid and water, the foam extinguishing agent can be divided into 3 percent type, 6 percent type and the like; according to the using place and characteristics, the foam extinguishing agent can be divided into A type foam extinguishing agent and B type foam extinguishing agent; the synthetic foam can be classified into protein type foam extinguishing agents and synthetic foam extinguishing agents according to the matrix classification of the synthetic foam; according to the formula and the application range, the fire-extinguishing agent can be divided into a protein foam fire-extinguishing agent (P), an anti-dissolving fluorine protein foam fire-extinguishing agent (F), an aqueous film-forming foam fire-extinguishing Agent (AFFF), an anti-alcohol foam fire-extinguishing Agent (AR) and the like.
The AFFF can be foamed in various low and medium expansion foam generating devices to extinguish oil fire; can be used together with a dry powder extinguishing agent for extinguishing fire, can also be used for fighting large oil storage fire in a submerged injection mode, and is an excellent liquid (B class) fire control and fire extinguishing agent. In the case of extinguishing solid (class A) fires, the aqueous film-forming foam concentrate is also an excellent wetting and penetrating agent, and can quickly extinguish deep flames in heaps, paper, rubber and general combustibles. However, research shows that the traditional long-chain fluorocarbon surfactant has high toxicity and biological enrichment, and the long-term use threatens the ecological environment. Therefore, they are limited by the united nations environmental planning agency.
At present, the environmental problem is solved by two ways of adding other fluorine-free surfactants or adding a small amount of short-chain fluorocarbon surfactant to replace long-chain fluorocarbon surfactant to develop the environment-friendly foam extinguishing agent. Although the development of the fluorine-free foam extinguishing agent can fundamentally solve the environmental problems caused by the use of the fluorocarbon surfactant in AFFF, the time period and the cost are too large to solve the demand problem of the foam extinguishing agent. In large and more complex fire fields, the resistance to burning and the resistance to defoaming in high temperature fire fields are weak. Therefore, in order to further improve the fire extinguishing efficiency and the re-combustion resistance of the foam extinguishing agent, the development of a foam extinguishing agent which can extinguish various complex-condition fires and is highly stable and environment-friendly is urgently needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-efficiency environment-friendly NP-foam extinguishing agent aiming at the defects of the prior art. The NP-foam fire extinguishing agent is added with a compound surfactant which is formed by compounding a short-chain fluorocarbon surfactant or an organic silicon surfactant and a hydrocarbon surfactant, so that a compact foam layer and a closed water film layer are formed, the foam stability is improved by combining with the addition of nano particles, the heat insulation performance of the foam layer is enhanced, the burning resistance and defoaming resistance of the fire extinguishing agent are improved, the NP-foam fire extinguishing agent is efficient and environment-friendly, and the NP-foam fire extinguishing agent is suitable for solid fire and liquid fire, and solves the problems that the existing foam fire extinguishing agent is only limited to one type of fire, the liquid fire extinguishing capability of the existing foam fire extinguishing agent is weakened when the external temperature is too high, and the use requirement cannot be met.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the efficient environment-friendly NP-foam extinguishing agent is characterized by comprising the following components in parts by weight: 3-12 parts of a compound surfactant, 10-150 parts of nano particles, 0.3-1 part of a stabilizer, 15-30 parts of a dispersant, 3-9 parts of an antifreeze agent, 1-10 parts of a suspending agent and the balance of water, wherein the total mass part of each component is 1000 parts; the compound surfactant is prepared by compounding a short-chain fluorocarbon surfactant or an organic silicon surfactant and a hydrocarbon surfactant.
Compared with the traditional two-phase AFFF foam extinguishing agent for extinguishing liquid fire and the three-phase foam extinguishing agent for extinguishing mine fire (wherein the particle size of solid particles is more than micron), the environment-friendly NP-foam extinguishing agent (NP is the abbreviation of nano particles) is added with a compound surfactant formed by compounding a short-chain fluorocarbon surfactant or an organosilicon surfactant and a hydrocarbon surfactant, and the fire extinguishing agent generates a large amount of stable compact foam in a short time by utilizing the good foaming performance of the organosilicon surfactant and the hydrocarbon surfactant, while the short-chain fluorocarbon surfactant has low enough surface tension (20 Nm) and spreads rapidly on the surface of a liquid combustion object to form a stable compact water film, so the two components in the compound surfactant cooperate to form a compact foam layer on the surface of fuel, The closed water film layer can efficiently prevent the escape of fuel vapor, and simultaneously, the evaporation and heat absorption of liquid in the foam and the liquid separated out from the foam can cool the surface of the fuel, thereby improving the fire extinguishing effect. Meanwhile, the environment-friendly NP-foam extinguishing agent disclosed by the invention is added with nanoparticles with smaller particle size, so that the influence on the surface tension of foam is reduced, the foam performance is further enhanced, a network structure is formed by aggregation in the foam, and the foam stability is improved. The stable foam of the nanometer granule that contains in the fire extinguishing process can form the compact firm powder shell of one deck on its surface under the heat radiation, and this powder shell can effectively the separation heat transfer, strengthens the heat-proof quality on foam blanket, avoids the foam that the external temperature too high leads to destroy fast. In addition, the dispersing agent and the suspending agent in the environment-friendly NP-foam extinguishing agent are favorable for preventing the aggregation and precipitation of the nano particles in the solution and promoting the nano particles to be uniformly dispersed in the foam liquid, the addition of the antifreeze is favorable for storing the environment-friendly NP-foam extinguishing agent in a low-temperature environment, and the viscosity of the foam liquid is enhanced by the stabilizer so as to further improve the stability of the foam.
In conclusion, the environment-friendly NP-foam extinguishing agent has the advantages of anti-burning performance and fire extinguishing performance, and greatly improves the fire extinguishing effect; in addition, the short-chain fluorocarbon surfactant can not be biologically accumulated in a food chain, and has low toxicity and good environmental protection property. The environment-friendly NP-foam extinguishing agent is efficient and environment-friendly, is not only suitable for solid (A-type) fires, but also suitable for extinguishing unknown liquid (B-type) fires mixed with oils and polar solvents, has universal extinguishing performance, is widely applied to units such as large-scale chemical enterprises, petrochemical enterprises, chemical fiber enterprises, solvent plants, chemical product warehouses, oil fields, oil depots, ships, hangars, automobile depots and the like and places where fuel is easy to leak, and solves the problems that the liquid fire extinguishing capability of the existing foam extinguishing agent is weakened when the external temperature is too high in the using process of the existing foam extinguishing agent, and the environmental and human safety hazards are caused by long-term use.
The efficient environment-friendly NP-foam fire extinguishing agent is characterized in that the compounded surfactant is a short-chain fluorocarbon surfactant or an organic silicon surfactant and a hydrocarbon surfactant, wherein the weight ratio of the short-chain fluorocarbon surfactant to the organic silicon surfactant to the hydrocarbon surfactant is (0.5-2.5): 2.5-9.5 by mass ratio. The mass ratio not only enables the foam extinguishing agent to have stronger foaming capacity, but also enables the surface tension of the foam liquid to be lower, the foam to quickly spread on the surface of liquid combustion objects such as oil surface and the like, and the foam extinguishing agent has strong biodegradability after being used and can not generate excessive burden on the environment.
The efficient environment-friendly NP-foam extinguishing agent is characterized in that the short-chain fluorocarbon surfactant is carboxylate fluorocarbon surfactants FC-11 and FC-5, a zwitterionic surfactant FS-50 or a nonionic surfactant YM-316, YM-319, FC-4430 or FS-60; the organic silicon surfactant is IOTA-2000, LS-408L or Coatosil-77; the hydrocarbon surfactant is betaine amphoteric surfactant BS-12, sulfate anionic surfactant BIO-TERGE AS-40, SDS, cationic surfactant CTAB or nonionic surfactant APG-0810, APG-0814 or PEG-200.
The efficient environment-friendly NP-foam extinguishing agent is characterized in that the nano particles are at least one of nano-scale silicon dioxide, aluminum hydroxide, aluminum oxide, magnesium hydroxide, magnesium oxide, antimony oxide, calcium carbonate, ferroferric oxide and antimony trioxide.
The high-efficiency environment-friendly NP-foam extinguishing agent is characterized in that the stabilizer is at least one of sodium polyphosphate, sodium hexametaphosphate, xanthan gum, urea, gelatin, guar gum, synthetic dragon gum and polyacrylamide.
The efficient environment-friendly NP-foam extinguishing agent is characterized in that the dispersing agent is at least one of SN-5040, OFX-5211, OFX-0193, Surfynol 485, Triton X405, PE-100, OT-75, Morwet EFW, Morwet D-425, Morwet D-360, Morwet D-390 and Agrilan 752.
The efficient environment-friendly NP-foam fire extinguishing agent is characterized in that the antifreeze agent is at least one of sodium benzoate, formamide, sodium chloride, alcohols including ethanol, dodecanol, ethylene glycol, n-butanol, propylene glycol, glycerol, ethers including diethylene glycol butyl ether and ethylene glycol monobutyl ether.
The high-efficiency environment-friendly NP-foam extinguishing agent is characterized in that the suspending agent is at least one of sodium alginate, polyacrylamide, sodium carboxymethylcellulose, polysorbate, monoglyceride, glycolipid, hydrolyzed protein, polyvinyl butanol, deltamethrin and prothioconazole.
In addition, the invention also discloses a method for preparing the high-efficiency environment-friendly NP-foam extinguishing agent, which is characterized by comprising the following steps:
step one, adding nanoparticles, an antifreeze agent, a suspending agent and water into a reaction kettle, mixing and stirring to obtain a suspension;
step two, preparing a compound surfactant solution from a short-chain fluorocarbon surfactant or an organosilicon surfactant and a hydrocarbon surfactant, uniformly stirring, and then adding a dispersing agent, a stabilizing agent and water to obtain a mixed solution;
and step three, combining the suspension obtained in the step one and the mixed solution obtained in the step two in a foam generator to prepare the environment-friendly NP-foam extinguishing agent.
The preparation method of the invention improves the dispersion effect of the nano particles in other components, improves the foam stability of the environment-friendly NP-foam extinguishing agent, and is beneficial to improving the fire extinguishing and controlling performances of the environment-friendly NP-foam extinguishing agent.
The method is characterized in that the rotation speed of the mixing stirring in the step one and the rotation speed of the uniform stirring in the step two are both 1200r/min, and the time is 0.5 h.
Compared with the prior art, the invention has the following advantages:
1. the NP-foam extinguishing agent is added with the compound surfactant which is compounded by short-chain fluorocarbon surfactant or organosilicon surfactant and hydrocarbon surfactant, so that a compact foam layer and a closed water film layer are formed, the foam stability is improved by combining with the addition of nano particles, the heat insulation property of the foam layer is enhanced, the rapid foam breaking caused by overhigh external temperature is avoided, the foam stability is further improved by combining with the action of dispersing agent, suspending agent, antifreezing agent and stabilizing agent, and the NP-foam extinguishing agent is suitable for low-temperature storage.
2. The components of the environment-friendly NP-foam extinguishing agent comprise the organic silicon surfactant and the hydrocarbon surfactant which are environment-friendly and nontoxic, and compared with the traditional long-chain surfactant, the short-chain fluorocarbon surfactant has shorter fluorocarbon chains, so that the toxicity and the biological accumulation are obviously reduced under the natural environment condition, and the environment-friendly performance of the NP-foam extinguishing agent is further ensured.
3. The environment-friendly NP-foam extinguishing agent has good cooling and blocking effects, so that fire hazards are inhibited, volatilization of combustion liquid steam can be effectively covered, the combustion activity of the NP-foam extinguishing agent is obviously reduced, a physical and chemical dual inhibition mechanism is exerted, the high-temperature resistance is strong, the problem that the existing foam extinguishing agent is limited to extinguishing one type of fire hazards in use is solved, and the problems that the foam anti-burning and anti-defoaming capabilities are weakened when the external temperature is too high, and the use requirements cannot be met are solved.
The technical solution of the present invention is further described in detail by examples below.
Detailed Description
Example 1
The environment-friendly NP-foam extinguishing agent comprises the following components in parts by mass: 8 parts of compound surfactant, 80 parts of nano particles, 0.60 part of stabilizer, 22 parts of dispersant, 6 parts of antifreeze agent, 5 parts of suspending agent and the balance of water, wherein the total parts by mass of the components are 1000 parts;
the compound surfactant is a zwitterionic surfactant FS-50 and a cationic surfactant CTAB, and the weight ratio of the compound surfactant to the cationic surfactant CTAB is 1: 6, and the components are compounded according to the mass ratio;
the nano particles are nano-scale silicon dioxide;
the stabilizer consists of sodium polyphosphate and xanthan gum according to the mass part ratio of 5: 5;
the dispersing agent consists of SN-5040 and OFX-5211 according to the mass part ratio of 3: 5;
the antifreeze agent is composed of n-butyl alcohol and ethylene glycol according to the mass part ratio of 5: 10;
the suspending agent is composed of sodium alginate and hydrolyzed protein according to the mass part ratio of 1: 2.
The preparation method of the environment-friendly NP-foam extinguishing agent comprises the following steps:
step one, adding nano-scale silicon dioxide, n-butanol, glycol, sodium alginate, hydrolyzed protein and water into a reaction kettle, and mixing and stirring for 0.5h at the rotating speed of 1200r/min to obtain a suspension;
step two, preparing a compound surfactant solution from a zwitterionic surfactant FS-50 and a cationic surfactant CTAB, mixing and stirring for 0.5h at the rotation speed of 1200r/min, and then adding SN-5040, OFX-5211, sodium polyphosphate, xanthan gum and water to obtain a mixed solution;
and step three, combining the suspension obtained in the step one and the mixed solution obtained in the step two in a foam generator to prepare the environment-friendly NP-foam extinguishing agent.
The environmental-friendly NP-foam extinguishing agent prepared in the embodiment is sampled and detected and then sent to a warehouse.
The short-chain fluorocarbon surfactant in the embodiment can be replaced by carboxylate fluorocarbon surfactants FC-11 and FC-5 or nonionic surfactants YM-316, YM-319, FC-4430 and FS-60; the hydrocarbon surfactant in the embodiment can be replaced by betaine amphoteric surfactant BS-12, sulfate anionic surfactant BIO-TERGE AS-40, SDS or nonionic surfactant APG-0810, APG-0814 and PEG-200.
The nanoparticles in this embodiment may be replaced with at least one of nanoscale silica, aluminum hydroxide, aluminum oxide, magnesium hydroxide, magnesium oxide, antimony oxide, calcium carbonate, ferroferric oxide, and antimony trioxide, in addition to nanoscale silica.
The stabilizer in this embodiment may be replaced with at least one of sodium polyphosphate, sodium hexametaphosphate, xanthan gum, urea, gelatin, guar gum, synthetic gum, and polyacrylamide in addition to the combination of sodium polyphosphate and xanthan gum.
The dispersant in this example may be replaced with at least one of SN-5040, OFX-5211, OFX-0193, Surfynol 485, Triton X405, PE-100, OT-75, Morwet EFW, Morwet D-425, Morwet D-360, Morwet D-390, and Agrilan 752 in addition to the combination of SN-5040 and OFX-5211.
The antifreeze agent in this embodiment can be replaced by at least one of sodium benzoate, formamide, sodium chloride, alcohols including ethanol, dodecanol, ethylene glycol, n-butanol, propylene glycol, glycerol, ethers including diethylene glycol butyl ether, and ethylene glycol monobutyl ether, in addition to the combination of n-butanol and ethylene glycol.
The suspending agent in this embodiment may be replaced with at least one of sodium alginate, polyacrylamide, sodium carboxymethylcellulose, polysorbate, monoglyceride, glycolipid, hydrolyzed protein, polyvinyl butanol, deltamethrin, and prothioconazole, in addition to sodium alginate and hydrolyzed protein.
Example 2
The environment-friendly NP-foam extinguishing agent comprises the following components in parts by mass: 12 parts of compound surfactant, 150 parts of nano particles, 1 part of stabilizer, 30 parts of dispersant, 9 parts of antifreeze agent, 10 parts of suspending agent and the balance of water, wherein the total parts by mass of the components are 1000 parts;
the compound surfactant is a carboxylate fluorocarbon surfactant FC-11 and SDS according to the proportion of 2.5: 9.5 by mass ratio;
the nano particles are nano-scale aluminum hydroxide;
the stabilizing agent is urea;
the dispersing agent is Morwet D-360;
the antifreeze agent is propylene glycol;
the suspending agent is monoglyceride.
The preparation method of the environment-friendly NP-foam extinguishing agent comprises the following steps:
step one, adding nano-scale aluminum hydroxide, monoglyceride, propylene glycol and water into a reaction kettle, and mixing and stirring for 0.5h at the rotating speed of 1200r/min to obtain a suspension;
step two, preparing a complex surfactant solution from a carboxylate fluorocarbon surfactant FC-11 and SDS, mixing and stirring for 0.5h at the rotating speed of 1200r/min, and then adding Morwet D-360, urea and water to obtain a mixed solution;
and step three, combining the suspension obtained in the step one and the mixed solution obtained in the step two in a foam generator to prepare the environment-friendly NP-foam extinguishing agent.
The environmental-friendly NP-foam extinguishing agent prepared in the embodiment is sampled and detected and then sent to a warehouse.
The short-chain fluorocarbon surfactant in the embodiment can be replaced by carboxylate fluorocarbon surfactant FC-5, zwitterionic surfactant FS-50 or nonionic surfactants YM-316, YM-319, FC-4430 and FS-60; the hydrocarbon surfactant in the embodiment can be replaced by betaine amphoteric surfactant BS-12, sulfate anionic surfactant BIO-TERGE AS-40, cationic surfactant CTAB or nonionic surfactant APG-0810, APG-0814 and PEG-200.
The nanoparticles in this embodiment may be replaced with at least one of nanoscale silicon dioxide, aluminum hydroxide, aluminum oxide, magnesium hydroxide, magnesium oxide, antimony oxide, calcium carbonate, ferroferric oxide, and antimony trioxide, in addition to nanoscale aluminum hydroxide.
The stabilizer in this embodiment may be replaced with at least one of sodium polyphosphate, sodium hexametaphosphate, xanthan gum, urea, gelatin, guar gum, synthetic gum, and polyacrylamide in addition to urea.
The dispersant in this embodiment may be replaced with at least one of SN-5040, OFX-5211, OFX-0193, Surfynol 485, Triton X405, PE-100, OT-75, Morwet EFW, Morwet D-425, Morwet D-360, Morwet D-390, and Agrilan 752, in addition to Morwet D-360.
The antifreeze agent in the embodiment can be replaced by at least one of sodium benzoate, formamide, sodium chloride, alcohols including ethanol, dodecanol, ethylene glycol, n-butanol, propylene glycol, glycerol, ethers including diethylene glycol butyl ether and ethylene glycol monobutyl ether except propylene glycol.
The suspending agent in this embodiment may be replaced with at least one of sodium alginate other than monoglyceride, polyacrylamide, sodium carboxymethylcellulose, polysorbate, monoglyceride, glycolipid, hydrolyzed protein, polyvinyl butanol, deltamethrin, and prothioconazole.
Example 3
The environment-friendly NP-foam extinguishing agent comprises the following components in parts by mass: 3 parts of compound surfactant, 10 parts of nano particles, 0.3 part of stabilizer, 15 parts of dispersant, 3 parts of antifreeze agent, 1 part of suspending agent and the balance of water, wherein the total parts by mass of the components are 1000 parts;
the compound surfactant is an organosilicon surfactant Coatosil-77 and a nonionic surfactant APG-0810, and the weight ratio of the organosilicon surfactant to the nonionic surfactant is 0.5: 2.5 is compounded;
the nano-particles are nano-scale magnesium hydroxide;
the stabilizing agent consists of gelatin and guar gum according to the mass part ratio of 5: 10;
the dispersing agent consists of Morwet EFW and Agrilan 752 in a mass part ratio of 5: 5;
the antifreeze agent is composed of glycerol and diethylene glycol monobutyl ether according to the mass part ratio of 3: 5;
the suspending agent is polyvinyl butanol.
The preparation method of the environment-friendly NP-foam extinguishing agent comprises the following steps:
step one, adding nanoscale magnesium hydroxide, glycerol, diethylene glycol butyl ether, polyvinyl butanol and water into a reaction kettle, and mixing and stirring for 0.5h at the rotation speed of 1200r/min to obtain a suspension;
step two, preparing a compound surfactant solution from a silicone surfactant Coatosil-77 and a nonionic surfactant APG-0810, mixing and stirring for 0.5h at the rotation speed of 1200r/min, and then adding Morwet EFW, Agrilan 752, gelatin, guar gum and water to obtain a mixed solution;
and step three, combining the suspension obtained in the step one and the mixed solution obtained in the step two in a foam generator to prepare the environment-friendly NP-foam extinguishing agent.
The environmental protection type NP-foam extinguishing agent prepared by the embodiment is sent to a warehouse after sampling detection.
The organosilicon surfactant in the embodiment can also be replaced by IOTA-2000 and LS-408L; the hydrocarbon surfactant in the embodiment can be replaced by a betaine amphoteric surfactant BS-12, a sulfate anionic surfactant BIO-TERGE AS-40, SDS, a cationic surfactant CTAB or a nonionic surfactant APG-0814, and PEG-200.
The nanoparticles in this embodiment may be replaced with at least one of nanoscale silicon dioxide, aluminum hydroxide, aluminum oxide, magnesium hydroxide, magnesium oxide, antimony oxide, calcium carbonate, ferroferric oxide, and antimony trioxide, in addition to nanoscale magnesium hydroxide.
The stabilizing agent in this embodiment may also be replaced with at least one of sodium polyphosphate, sodium hexametaphosphate, xanthan gum, urea, gelatin, guar gum, synthetic gum, and polyacrylamide in addition to the gelatin and guar gum combination.
The dispersant in this example may be replaced with at least one of SN-5040, OFX-5211, OFX-0193, Surfynol 485, Triton X405, PE-100, OT-75, Morwet EFW, Morwet D-425, Morwet D-360, Morwet D-390, and Agrilan 752 in addition to the combination of Morwet EFW and Agrilan 752.
The antifreeze agent in this embodiment can be replaced by at least one of sodium benzoate, formamide, sodium chloride, alcohols including ethanol, dodecanol, ethylene glycol, n-butanol, propylene glycol, glycerol, and ethers including diethylene glycol butyl ether and ethylene glycol monobutyl ether, in addition to the combination of glycerol and diethylene glycol butyl ether.
The suspension in this embodiment may be replaced with at least one of sodium alginate other than polyvinyl butanol, polyacrylamide, sodium carboxymethylcellulose, polysorbate, monoglyceride, glycolipid, hydrolyzed protein, polyvinyl butanol, deltamethrin, and prothioconazole.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (10)
1. The efficient environment-friendly NP-foam extinguishing agent is characterized by comprising the following components in parts by weight: 3-12 parts of a compound surfactant, 10-150 parts of nano particles, 0.3-1 part of a stabilizer, 15-30 parts of a dispersant, 3-9 parts of an antifreeze agent, 1-10 parts of a suspending agent and the balance of water, wherein the total mass part of each component is 1000 parts; the compound surfactant is prepared by compounding a short-chain fluorocarbon surfactant or an organic silicon surfactant and a hydrocarbon surfactant.
2. The high-efficiency environment-friendly NP-foam fire extinguishing agent according to claim 1, wherein the compound surfactant is prepared by mixing short-chain fluorocarbon surfactant or organosilicon surfactant with hydrocarbon surfactant according to the ratio of 0.5-2.5: 2.5-9.5 by mass ratio.
3. The NP-foam fire extinguishing agent of claim 2, wherein the short-chain fluorocarbon surfactant is carboxylate fluorocarbon surfactant FC-11, FC-5, zwitterionic surfactant FS-50 or nonionic surfactant YM-316, YM-319, FC-4430, FS-60; the organic silicon surfactant is IOTA-2000, LS-408L or Coatosil-77; the hydrocarbon surfactant is betaine amphoteric surfactant BS-12, sulfate anionic surfactant BIO-TERGE AS-40, SDS, cationic surfactant CTAB or nonionic surfactant APG-0810, APG-0814 and PEG-200.
4. The high-efficiency environment-friendly NP-foam fire extinguishing agent according to claim 1, wherein said nano particles are at least one of nano-scale silicon dioxide, aluminum hydroxide, aluminum oxide, magnesium hydroxide, magnesium oxide, antimony oxide, calcium carbonate, ferroferric oxide and antimony trioxide.
5. The NP-type fire foam of claim 1, wherein the stabilizer is at least one of sodium polyphosphate, sodium hexametaphosphate, xanthan gum, urea, gelatin, guar gum, synthetic gum and polyacrylamide.
6. The NP-foam extinguishing agent as claimed in claim 1, wherein said dispersing agent is at least one of SN-5040, OFX-5211, OFX-0193, Surfynol 485, Triton X405, PE-100, OT-75, Morwet EFW, Morwet D-425, Morwet D-360, Morwet D-390 and Agrilan 752.
7. The high-efficiency environment-friendly NP-foam fire extinguishing agent according to claim 1, wherein said antifreeze agent is at least one of sodium benzoate, formamide, sodium chloride, alcohols including ethanol, dodecanol, ethylene glycol, n-butanol, propylene glycol, glycerol, ethers including diethylene glycol butyl ether, ethylene glycol monobutyl ether.
8. The NP-type fire extinguishing foam of claim 1, wherein said suspending agent is at least one of sodium alginate, polyacrylamide, sodium carboxymethylcellulose, polysorbate, monoglyceride, glycolipid, hydrolyzed protein, polyvinyl butanol, deltamethrin and prothioconazole.
9. A method for preparing the high-efficiency environment-friendly NP-foam fire extinguishing agent as defined in any one of claims 1 to 8, which comprises the following steps:
step one, adding nanoparticles, an antifreeze agent, a suspending agent and water into a reaction kettle, mixing and stirring to obtain a suspension;
step two, preparing a compound surfactant solution from a short-chain fluorocarbon surfactant or an organic silicon surfactant and a hydrocarbon surfactant, uniformly stirring, and then adding a dispersing agent, a stabilizing agent and water to obtain a mixed solution;
and step three, combining the suspension obtained in the step one and the mixed solution obtained in the step two in a foam generator to prepare the environment-friendly NP-foam extinguishing agent.
10. The method according to claim 9, wherein the mixing agitation in step one and the stirring homogenization in step two are carried out at a rotation speed of 1200r/min for 0.5 h.
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| CN (1) | CN114748828A (en) |
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| CN115804927A (en) * | 2022-12-12 | 2023-03-17 | 江西新中野茶业科技有限公司 | Environment-friendly aqueous film-forming foam extinguishing agent and preparation method and application thereof |
| CN115920295A (en) * | 2022-12-07 | 2023-04-07 | 南京工业大学 | Composite type fluorine-free foam extinguishing agent and preparation method thereof |
| CN116236743A (en) * | 2023-02-10 | 2023-06-09 | 中国民用航空飞行学院 | Foam stabilizer for foam fire extinguisher and application thereof |
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| CN110478847A (en) * | 2019-09-29 | 2019-11-22 | 中国科学技术大学 | A kind of environment-friendly type aqueous film-forming foam extinguishing agent based on short chain fluorine carbon |
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| CN106075792A (en) * | 2016-06-03 | 2016-11-09 | 中国科学技术大学 | A kind of efficient and environment-friendly type fire foam and preparation method thereof |
| CN106237577A (en) * | 2016-08-01 | 2016-12-21 | 陈潜 | Extinguishment additive agent |
| CN110478847A (en) * | 2019-09-29 | 2019-11-22 | 中国科学技术大学 | A kind of environment-friendly type aqueous film-forming foam extinguishing agent based on short chain fluorine carbon |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920295A (en) * | 2022-12-07 | 2023-04-07 | 南京工业大学 | Composite type fluorine-free foam extinguishing agent and preparation method thereof |
| CN115804927A (en) * | 2022-12-12 | 2023-03-17 | 江西新中野茶业科技有限公司 | Environment-friendly aqueous film-forming foam extinguishing agent and preparation method and application thereof |
| CN115804927B (en) * | 2022-12-12 | 2023-11-24 | 江西新中野茶业科技有限公司 | Environment-friendly water-formed film foam extinguishing agent and preparation method and application thereof |
| CN116236743A (en) * | 2023-02-10 | 2023-06-09 | 中国民用航空飞行学院 | Foam stabilizer for foam fire extinguisher and application thereof |
| CN116236743B (en) * | 2023-02-10 | 2024-06-14 | 中国民用航空飞行学院 | Foam stabilizer for foam fire extinguisher and application thereof |
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