CN101822883A - Pyrotechnical hot-gas sol fire extinguishing agent and preparation method thereof - Google Patents
Pyrotechnical hot-gas sol fire extinguishing agent and preparation method thereof Download PDFInfo
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- CN101822883A CN101822883A CN 201010143768 CN201010143768A CN101822883A CN 101822883 A CN101822883 A CN 101822883A CN 201010143768 CN201010143768 CN 201010143768 CN 201010143768 A CN201010143768 A CN 201010143768A CN 101822883 A CN101822883 A CN 101822883A
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Abstract
The invention discloses a pyrotechnical hot-gas sol fire extinguishing agent and a preparation method thereof, and relates to the field of fire extinguishers. The pyrotechnical hot-gas sol fire extinguishing agent is prepared from 41 to 56 weight percent of first oxidant, 8 to 15 weight percent of second oxidant, 15 to 26 weight percent of burnable agent, 4 to 17 weight percent of adhesive and 2 to 22 weight percent of functional additive. The preparation method comprises the following steps of: mixing the oxidants, the burnable agent and the functional additive, then screening the mixture, stirring the mixture and the adhesive, mixing and stirring the mixture and organic solution, pressing the mixture and drying the mixture. The pyrotechnical hot-gas sol fire extinguishing agent has the characteristics of high fire extinguishing efficiency, simplified fire extinguishing composition, no influence of combustion reaction on external oxygen concentration change, no harm substance production to human bodies, animals and natural environments, safer operating mode, simpler and more convenient preparation method and the like, and is suitable for extinguishing fire of fuel and electrical equipment of automobile engine cabins, airplane fuel cabins, power distribution cabinets and the like.
Description
Technical field
The present invention relates to the fire-fighting fire extinguishing equipment, particularly a kind of pyrotechnical hot-gas sol fire extinguishing agent that is applicable to fuel oils such as automobile engine nacelle, aircraft fuel cabin, power distribution cabinet, electric equipment fire and preparation method thereof.
Background technology
Since the aerosol fire-extinguishing technology was come out, because of characteristics such as it is nontoxic, harmless, high efficiency, total flooding, comprehensive fire extinguishing enjoy common people to favor, relevant patent also emerged in an endless stream.At present, be used for the fuel oil in relative closure spaces such as automobile engine nacelle, the aerosol extinguishing agent of electric equipment mainly contains hot-gas sol fire extinguishing agent and cold aerosol fire extinguishing agent, it is that the sylvite of representative is that the aerosol extinguishing agent of oxidant, aerosol extinguishing agent, Shaanxi sylvite and the strontium salt mixture that Jiangxi strontium salt is oxidant are the aerosol extinguishing agent of oxidant that hot-gas sol fire extinguishing agent mainly contains with the Russ P group.Sylvite is that the aerosol extinguishing agent of oxidant extensively is subjected to liking of fields such as civilian and military supplies of Russia because of its high-effect fire-extinguishing, characteristics such as cheap, easy to maintenance, and in Europe, North America and Asia use is arranged all.But a large amount of application in practice and research work show, the potassium hydroxide strong basicity conductive materials that produces based on the aerosol extinguishing agent of sylvine oxygenant has the secondary damage problem to guard space and equipment.Strontium salt is the aerosol extinguishing agent of oxidant, as the technical scheme of CN17939820A patent, though reduced secondary damage to electric equipment in a way, has also reduced the fire extinguishing effectiveness of extinguishing chemical simultaneously.Sylvite and strontium salt mixture are the aerosol extinguishing agent of oxidant, as patents such as CN101088578, CN101088579, CN101088580, CN101085400, CN1386554A, CN101376049, the fuel agent of its fire-extinguishing composite is poisonous and hazardous guanidine class material, in preparation process, human body and environment all there is in various degree infringement side effect.
The great majority of the compacting of aerosol extinguishing agent in the past adopt hot pressing mode to suppress, and have obvious defects: the one, and it is higher that extinguishing chemical forms the required pressure of goods, is 1000～1500kg/cm
2(100～150Mpa), increased the danger when the compacting extinguishing chemical; The 2nd, owing to form aerocolloidal key component low amounts of water content is arranged, cause the instability of catching fire and burning; The 3rd, when prick pressing, under 70～90 ℃ of temperature, carry out, operating environment requires harsh.
Summary of the invention
Deficiency at existing product and technology existence, technical problem to be solved by this invention provides a kind of fuel oil, electric equipment fire such as automobile engine nacelle, aircraft fuel cabin, power distribution cabinet of being applicable to, its fire-fighting efficiency height, fire-extinguishing composite are simplified, combustion reaction does not influence extraneous oxygen concentration and changes, human body and animal and natural environment are not produced the aerosol extinguishing agent of any harmful substance and mode of operation is safer, make more simple and convenient preparation method.
For solving the problems of the technologies described above the technical solution used in the present invention:
The one, invent a kind of pyrotechnical hot-gas sol fire extinguishing agent, its prescription is made up of oxidant, fuel agent, adhesive and functional additive; Oxidant system is by first oxidant and second oxidant is composite forms, and wherein first oxidant is the oxide of strontium salt or strontium, and second oxidant is a sylvite; The weight percentage of its each constituent is:
First oxidant 41～56,
Second oxidant 8～15,
Fuel agent 15～26,
Adhesive 4～17,
Functional additive 2～22.
Described first oxidant can be strontium oxide strontia (SrO), strontium peroxide (SrO
2), strontium nitrate [Sr (NO
3)
2], strontium sulfate (SrSO
4), strontium permanganate [Sr (MnO
4)
2] in a kind of or 2～3 kinds.When getting wherein 2 kinds or 3 kinds, the proportioning of each constituent can be equivalent, also can be arbitrary value.
The second oxidant sylvite can be potassium nitrate (KNO
3), potassium chloride (KCl), potassium bichromate (K
2Cr
3O
7), potassium hyperchlorate (KClO
4) in a kind of or 2～3 kinds.When getting wherein 2 kinds or 3 kinds, the proportioning of each constituent can be equivalent, also can be arbitrary value.
Fuel agent is made up of first fuel agent and/or second fuel agent; First fuel agent is by charcoal powder (C), hexamethylenetetramine (C
6H
12N
4), a kind of or 2～3 kinds of formations in the sulphur (S), dicyandiamide, melamine, 5-Aminotetrazole, diazoamino tetrazolium, diaminourea, triamido guanidinesalt, carbonic acid hydrazine; Second fuel agent is 1%～4% phenolic resins (C by weight percentage
13H
12O
2) a kind of or 2～3 kinds of formations in the impregnated aluminium powder of glue (Al), magnesium powder (Mg) or the magnesium aluminum-alloy powder (Mg-Al group).When getting wherein 2 kinds or 3 kinds, the proportioning of each constituent can be equivalent, also can be arbitrary value.
Adhesive is made up of a kind of in mylar, neoprene, the nitrocotton Huo Duan Hydroxyalkyl base polybutadiene (HTPB) or 2～3 kinds.When getting wherein 2 kinds or 3 kinds, the proportioning of each constituent can be equivalent, also can be arbitrary value.
Functional additive is by white carbon black (lightweight SiO
2), strontium oxalate (SrC
2O
4), strontium carbonate (SrCO
3), magnesium carbonate (MgCO
3), saleratus (K
2HCO
3) in a kind of or 2～3 kinds of compositions.When getting wherein 2 kinds or 3 kinds, the proportioning of each constituent can be equivalent, also can be arbitrary value.
Each constituent and the weight percentage thereof of preferred version one are:
Strontium nitrate 41～56,
Potassium nitrate 8～15,
Charcoal powder 14～22,
Magnesium powder 1～4,
Nitrocotton 4～17,
Magnesium carbonate 2～22.
Each constituent and the weight percentage thereof of preferred version two are:
Strontium oxide strontia 12～25,
Strontium peroxide 29～31,
Potassium hyperchlorate 8～15,
Magnesium powder 15～26,
Mylar 4～17,
White carbon black 2～22.
Each constituent and the weight percentage thereof of preferred version three are:
Strontium permanganate 41～56,
Potassium chloride 3～7,
Potassium hyperchlorate 4～10,
Charcoal powder 15～26,
Mylar 4～17,
Strontium carbonate 2～22.
The 2nd, the preparation method of a kind of pyrotechnical hot-gas sol fire extinguishing agent of invention: earlier that the weighing by weight ratio of oxidant, fuel agent and functional additive is good, pour into and mix 2～4 hours in the mixer, make the mixing medicine; To mix the standard screen of medicine by aperture 0.250mm * 0.250mm then and sieve, mixing medicine and adhesive after will sieving subsequently evenly stir, mix with organic solution again to mix medicine and handle after 10 minutes, and be 50～100kg/cm at pressure
2Down, be pressed, put into the drying room oven dry after pressing, bake out temperature is no more than 120 ℃.
Described mixer is a ball mill, and described organic solution is anhydrous propanone, and the mode of colding pressing is adopted in described compacting.
Pyrotechnical hot-gas sol fire extinguishing agent of the present invention, through test, be example with 200g extinguishing chemical dose: its burning velocity is 8～9 seconds, the insulating resistance value of fire extinguishing product is greater than 20M Ω, for the full attack time of Sang Tala automobile in travelling is 15S, and after the fire extinguishing, automobile can normally travel.(according to GA 499.1-2004 standard, for protecting volume less than 10m
3Fire extinguisher, its oxygen concentration determination is not done requirement, so do not do mensuration.)
Therefore, pyrotechnical hot-gas sol fire extinguishing agent of the present invention is applicable to fuel oil, electric equipment fire such as automobile engine nacelle, aircraft fuel cabin, power distribution cabinet, its fire-fighting efficiency height; And generally, fire-extinguishing composite only adopts the 5-8 kind, and its composition is relatively simplified; Simultaneously, owing to have oxidant in the composition, do not influence the oxygen concentration in the external world during combustion reaction; In addition, during combustion reaction, can not produce human body and animal and the harmful any material of natural environment.
When preparing pyrotechnical hot-gas sol fire extinguishing agent of the present invention, its method is easier, and needed pressure is less, and the temperature that can tolerate during oven dry is higher, operating environment is required lower, thereby, safer during production.
The specific embodiment
Embodiment one:
Take by weighing each constituent by following weight percentage:
Strontium nitrate 41～56,
Potassium nitrate 8～15,
Charcoal powder 14～22,
Magnesium powder 1～4,
Nitrocotton 4～17,
Magnesium carbonate 2～22, standby;
Wherein strontium nitrate, potassium nitrate, charcoal powder, magnesium powder and magnesium carbonate poured into mix 2～4 hours in the ball mill, make the mixing medicine; Then, will mix the standard screen of medicine by aperture 0.250mm * 0.250mm sieves; Mixing medicine and nitrocotton after will sieving subsequently evenly stir, (usage ratio of anhydrous propanone is roughly: when each constituent gross weight is 1160 grams to use anhydrous propanone again, interpolation anhydrous propanone 500ml) the medicine of mixing was handled after 10 minutes, was 50～100kg/cm at pressure
2Down, be pressed, put into the drying room oven dry after pressing and get final product, its bake out temperature is no more than 120 ℃.
Embodiment two:
Take by weighing each constituent by following weight percentage:
Strontium oxide strontia 12～25,
Strontium peroxide 29～31,
Potassium hyperchlorate 8～15,
Magnesium powder 15～26,
Mylar 4～17,
White carbon black 2～22, standby;
Wherein strontium oxide strontia, strontium peroxide, potassium hyperchlorate, magnesium powder and white carbon black poured into mix 2～4 hours in the ball mill, make the mixing medicine; Then, will mix the standard screen of medicine by aperture 0.250mm * 0.250mm sieves; Mixing medicine and mylar after will sieving subsequently evenly stir, (usage ratio of anhydrous propanone is roughly: when each constituent gross weight is 1160 grams to use anhydrous propanone again, interpolation anhydrous propanone 500ml) the medicine of mixing was handled after 10 minutes, was 50～100kg/cm at pressure
2Down, be pressed, put into the drying room oven dry after pressing and get final product, its bake out temperature is no more than 120 ℃.
Embodiment three:
Take by weighing each constituent by following weight percentage:
Strontium permanganate 41～56,
Potassium chloride 3～7,
Potassium hyperchlorate 4～10,
Charcoal powder 15～26,
Mylar 4～17,
Strontium carbonate 2～22, standby;
Wherein strontium permanganate, potassium chloride, potassium hyperchlorate, charcoal powder and strontium carbonate poured into mix 2～4 hours in the ball mill, make the mixing medicine; Then, will mix the standard screen of medicine by aperture 0.250mm * 0.250mm sieves; Mixing medicine and mylar after will sieving subsequently evenly stir, (usage ratio of anhydrous propanone is roughly: when each constituent gross weight is 1160 grams to use anhydrous propanone again, interpolation anhydrous propanone 500ml) the medicine of mixing was handled after 10 minutes, was 50～100kg/cm at pressure
2Down, be pressed, put into the drying room oven dry after pressing and get final product, its bake out temperature is no more than 120 ℃.
When being applicable to fuel oil, electric equipment fire such as automobile engine nacelle, aircraft fuel cabin, power distribution cabinet, pyrotechnical hot-gas sol fire extinguishing agent of the present invention puts out a fire.
Claims (10)
1. pyrotechnical hot-gas sol fire extinguishing agent, it is characterized in that: its prescription is made up of oxidant, fuel agent, adhesive and functional additive; Oxidant system is by first oxidant and second oxidant is composite forms, and wherein first oxidant is the oxide of strontium salt or strontium, and second oxidant is a sylvite; The weight percentage of its each constituent is:
First oxidant 41～56,
Second oxidant 8～15,
Fuel agent 15～26,
Adhesive 4～17,
Functional additive 2～22.
2. pyrotechnical hot-gas sol fire extinguishing agent according to claim 1 is characterized in that: described first oxidant can be strontium oxide strontia (SrO), strontium peroxide (SrO
2), strontium nitrate [Sr (NO
3)
2], strontium sulfate (SrSO
4), strontium permanganate [Sr (MnO
4)
2] in a kind of or 2～3 kinds.
3. pyrotechnical hot-gas sol fire extinguishing agent according to claim 1 is characterized in that: the second oxidant sylvite can be potassium nitrate (KNO
3), potassium chloride (KCl), potassium bichromate (K
2Cr
3O
7), potassium hyperchlorate (KClO
4) in a kind of or 2～3 kinds.
4. according to claim 2 or 3 described pyrotechnical hot-gas sol fire extinguishing agents, it is characterized in that: fuel agent is made up of first fuel agent and/or second fuel agent; First fuel agent is by charcoal powder (C), hexamethylenetetramine (C
6H
12N
4), a kind of or 2～3 kinds of formations in the sulphur (S), dicyandiamide, melamine, 5-Aminotetrazole, diazoamino tetrazolium, diaminourea, triamido guanidinesalt, carbonic acid hydrazine; Second fuel agent is 1%～4% phenolic resins (C by weight percentage
13H
12O
2) a kind of or 2～3 kinds of formations in the impregnated aluminium powder of glue (Al), magnesium powder (Mg) or the magnesium aluminum-alloy powder (Mg-Al group).
5. pyrotechnical hot-gas sol fire extinguishing agent according to claim 4 is characterized in that: adhesive is made up of a kind of in mylar, neoprene, the nitrocotton Huo Duan Hydroxyalkyl base polybutadiene (HTPB) or 2～3 kinds.
6. pyrotechnical hot-gas sol fire extinguishing agent according to claim 5 is characterized in that: functional additive is by white carbon black (lightweight SiO
2), strontium oxalate (SrC
2O
4), strontium carbonate (SrCO
3), magnesium carbonate (MgCO
3), saleratus (K
2HCO
3) in a kind of or 2～3 kinds of compositions.
7. pyrotechnical hot-gas sol fire extinguishing agent according to claim 6 is characterized in that: preferably each constituent and weight percentage thereof are:
Strontium nitrate 41～56,
Potassium nitrate 8～15,
Charcoal powder 14～22,
Magnesium powder 1～4,
Nitrocotton 4～17,
Magnesium carbonate 2～22.
8. pyrotechnical hot-gas sol fire extinguishing agent according to claim 6 is characterized in that: preferably each constituent and weight percentage thereof are:
Strontium oxide strontia 12～25,
Strontium peroxide 29～31,
Potassium hyperchlorate 8～15,
Magnesium powder 15～26,
Mylar 4～17,
White carbon black 2～22.
9. pyrotechnical hot-gas sol fire extinguishing agent according to claim 6 is characterized in that: preferably each constituent and weight percentage thereof are:
Strontium permanganate 41～56,
Potassium chloride 3～7,
Potassium hyperchlorate 4～10,
Charcoal powder 15～26,
Mylar 4～17,
Strontium carbonate 2～22.
10. the preparation method of a pyrotechnical hot-gas sol fire extinguishing agent is characterized in that: earlier that the weighing by weight ratio of oxidant, fuel agent and functional additive is good, and pour into and mix 2～4 hours in the mixer, make the mixing medicine; To mix the standard screen of medicine by aperture 0.250mm * 0.250mm then and sieve, mixing medicine and adhesive after will sieving subsequently evenly stir, mix with organic solution again to mix medicine and handle after 10 minutes, and be 50～100kg/cm at pressure
2Down, be pressed, put into the drying room oven dry after pressing, bake out temperature is no more than 120 ℃.
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