CN107684684A - A kind of metal class powder extinguishing agent - Google Patents
A kind of metal class powder extinguishing agent Download PDFInfo
- Publication number
- CN107684684A CN107684684A CN201610631599.8A CN201610631599A CN107684684A CN 107684684 A CN107684684 A CN 107684684A CN 201610631599 A CN201610631599 A CN 201610631599A CN 107684684 A CN107684684 A CN 107684684A
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- Prior art keywords
- fire
- extinguishing agent
- powder extinguishing
- agent according
- barrier
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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
- A62D1/0007—Solid extinguishing substances
- A62D1/0014—Powders; Granules
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
The present invention relates to a kind of metal class powder extinguishing agent, it is characterised in that：Parts by weight shared by constituent and each composition are barrier 10-20, foaming agent 50-70, filler 15-20, stabilizer 1-5, size 1-5, catalyst 1-5.
Description
Technical field
The present invention relates to a kind of metal class powder extinguishing agent.
Background technology
With the continuous development of scientific technology, progressive, we live and industrial raw material and program were compared with the past
There is significant progress.The particulate metal such as potassium, titanium, magnesium, sodium and lithium raw material and aluminum alkyl catalyst etc. also turn into people life,
Critically important part in production.The fire occurred for above material is referred to as metal class fire, such fire be it is a kind of very
Rare, more special metal class substance combustion fire, fire scene temperature height, the comburant of such fire have high toxicity, Yi Lian
Lock it is fried, easily cause mass casualties, it is quite big to put out difficulty.
For metal class fire, traditionally enter to cover using incombustible materials such as dry sand, diatomite, graphite or vermiculite powers or
Absorb, to block burning, blow-off velocity is slow, and efficiency is low, and the requirement of extinguishant is very big.
In existing fire-fighting system, either powder extinguishing agent, carbon dioxide extinguishing agent, or ultra-fine dry powder etc. are new
Extinguishing chemical, there is respective application limitation.Do not allow to use any extinguishing chemical based on water for this kind of fire, and
Gas extinguishing agent is also unusable, because even being a small amount of moisture and carbon dioxide, alkyl halide or other clean gas
Body phase combines, and unexpected reaction can be also produced when going out metal fire, this reaction often aggravates the intensity of a fire.Alkyl halide
Extinguishing chemical can even react in the case of no moisture with some metals.Ultra-fine dry powder extinguishing agent etc. is representative
Fire-extinguishing agent is protected to it, and effect has improved, but blow-off velocity is slow, and efficiency is low, and the requirement of extinguishant is big
Defect does not solve fundamentally, can be only applied to part D class fire, it is impossible to is common to putting out a fire to save life and property for D class fire, has very
Big limitation.Therefore it is badly in need of researching and developing new extinguishing chemical putting out a fire to save life and property for D class fire.
In the prior art, D classes powder extinguishing agent is generally divided into two classes, first, tailored version, it is only applicable to certain or certain class
Metallic fires, applicable surface is smaller, but often fire extinguishing effectiveness is high.Second, universal, its scope of application is wide, but exists and go out
Degree, anti-resume combustion etc. problem at top speed, it is also easy to produce resume combustion after particularly putting out a fire, scene is difficult to clear up.
The content of the invention
Present invention aims at a kind of metal class powder extinguishing agent is provided, blow-off velocity is fast, not resume combustion, is easy to live clear
Reason.
Realize the technical scheme of the object of the invention：
A kind of metal class powder extinguishing agent, it is characterised in that：Parts by weight shared by constituent and each composition are barrier
10-20, foaming agent 50-70, filler 15-20, stabilizer 1-5, size 1-5, catalyst 1-5.
Barrier particle size is 1-10 μm, 10-100 μm of foaming agent particle size, filler particles size 10-
100 μm, 10-20 μm of catalyst particle size.
Filler is modified chlorinated sodium, potassium chloride or calcium carbonate.
Stabilizer is stearic acid, odium stearate or calcium stearate.
Size is anion surfactant.
Catalyst is cellulose, pentaerythrite or starch.
Foaming agent is high ammonium polyphosphate.
Barrier is silica, silicate or expanded graphite.
The device have the advantages that：
Constituent of the present invention includes barrier, foaming agent, filler, stabilizer, size, catalyst.Barrier, foaming
Expanded after agent is heated, the film of densification, passivating metallic surfaces can be formed in the metal surface of burning.Stabilizer makes coating
Become fine and close, flat, hard, and crust, there is heat-insulated, oxygen barrier, prevent fuel gas from outwards escaping, so as to reach
Fire-retardant purpose, can effectively suffocate metal flame.Size can produce porous high-efficiency infiltration, prevent and repair the burn-through of coating,
Thoroughly extinguish fire caused by metal so as to reach.Filler can improve the dispersiveness of powder, mobility and aerial
Suspension stability simultaneously can effectively reduce its hygroscopicity and improve dispersive property.Each component in the present invention can gather with base material
Close, and concerted reaction occurs with organosilicon polymer, mutual the oozing property for improving two kinds of polymer promotes the generation of carbon-coating, prevents cigarette
Formation and flame development, reach more preferably put out a fire effect and drop cigarette smoke elimination effect.
Barrier particle size of the present invention is 1-10 μm, 10-100 μm of foaming agent particle size, filler particles size
10-100 μm, 10-20 μm of catalyst particle size.Due to the small-size effect of particle, increase its specific surface area, surface
Molecular amounts increase, surface energy increase, and surface-active is greatly enhanced；Molecule is easily dispersed again, is suspended after injection
In air, in a manner of taking three dimensions and flame contact, " total flooding " fire extinguishing state is produced；Molecule is in flame
In it is more quick rapid by thermal decomposition rate, the thermal decomposition product in the scene of a fire catches the burning directly middle chain rupture of free radical by flutterring
Formula burn, so as to prevent flame transmission, the flame intensity of combustion zone is declined, finally make combustion velocity decline up to
Terminate.
Filler of the present invention is modified chlorinated sodium, potassium chloride or calcium carbonate, i.e., by potassium chloride, sodium chloride, calcium carbonate surface
With compound after modification, dispersiveness, mobility and aerial suspension stability etc. of powder are being improved, can be with
Reach more preferably effect, so as to effectively reduce its hygroscopicity and improve dispersive property.
Foaming agent of the present invention is high ammonium polyphosphate, natural hydrophobic, nonhygroscopic, has acid source and source of the gas dual-use function, has
The advantages that phosphorus content is high, nitrogen content is more, heat endurance is good, it is neutral to be bordering on, good flame retardation effect, and intumescent does not produce during burning
Noxious material.
To sum up, based on the distinctive extinguishing chemical composition composition of the present invention and composition proportion, there is advantages below：
(1) product of the invention puts out D class fire rapidly by physics, the dual extinguishing mechanism of chemistry, realization.
(2) present invention has cooling heat-absorbing action, can reduce the temperature on comburant surface rapidly.
(3) present invention has air barrier effect, and the film of densification, passive metal can be formed in the metal surface of burning
Surface, the air exclusion for making the metal of burning crust with surrounding, extinguishes fire caused by metal.
(4) product of the invention can be chemically reacted, in the work of foaming agent in fire extinguishing procedure with metal alkyl
Under, porous foam cellular solids shell, not resume combustion are formed after fire combustion asphyxia, and is no longer had and is run into air and just burn, is met
The characteristic just exploded to water, is easy to the scene of a fire to clear up.
(5) extinguishing chemical of the invention is nonhygroscopic, does not crystallize, good fluidity, is easy to preserve, and can use domestic existing dry
Powder equipment carries out spurting fire extinguishing.
Embodiment
Parts by weight shared by constituent of the present invention and each composition are barrier 10-20, foaming agent 50-70, to fill out
Fill agent 15-20, stabilizer 1-5, size 1-5, catalyst 1-5.Wherein, filler is from modified chlorinated sodium, potassium chloride
Or calcium carbonate, stabilizer select stearic acid, odium stearate or calcium stearate, size selects negative surfactant, catalysis
Cellulose, pentaerythrite or starch are selected in agent, and foaming agent selects high ammonium polyphosphate, barrier from silica, silicate or
Expanded graphite.Barrier particle size is 1-10 μm, 10-100 μm of foaming agent particle size, preferably 10-20 μm, filling
10-100 μm of agent particle size, preferably 10-20 μm, 10-20 μm of catalyst particle size.
Embodiment 1
Constituent：
Preparation uses common process.Above-mentioned raw materials are well mixed in pears blade mixer.In 70-90 DEG C of drying
Dried, be crosslinked, solidified in stove, required extinguishing chemical is made.Following examples preparation method is identical.
The extinguishing chemical of embodiment 1 is detected respectively, and its performance indications is as follows：
Above performance indications meet GA979-2012《D class powder extinguishing agents》In technical requirements.
Beneficial effects of the present invention are further illustrated with reference to experiment：
Each 14 kilograms of the dry powder of above-described embodiment 1- embodiments 4 is taken, transportable fire extinguisher is filled respectively, is pressurized to 1.2MPa,
Fire-extinguishing test is carried out respectively.
Magnesium metal of putting out a fire is tested：
It is not more than 3m/s in wind speed, under the weather condition of no sleet, by square steel disk (length of side (600 ± 10) mm, height (300
± 5) mm, disk wall thickness 2.5mm~3.0mm), it is placed on level ground, according to GA979-2012 in steel disk《D class dry powder
Extinguishing chemical》In by regulation b) in 6.10.1.1 add metal fuel magnesium, and be uniformly distributed it.Combustion is lighted using fire rod
Material, when burning proceeds to whole fuel surface, starts to put out a fire.Extinguisher valve is controlled to make sample with appropriate flow during fire extinguishing
Fall as far as possible in steel disk, and the place outside fuel splash to steel disk can not be made.Experiment is sprayed in dry powder and tied every time
Flame all extinguishes before beam.
AEI After End of Injection, keep steel disk to stand 60min, occur without resume combustion, and have residual fuel in steel disk, and four kinds of gold
Belong to fire fighting test all successes of magnesium, then it is assumed that magnesium fire success of going out.
Fire extinguishing metal sodium test
It is not more than 3m/s in wind speed, under the weather condition of no sleet, by square steel disk (length of side (600 ± 10) mm, height (300
± 5) mm, disk wall thickness 2.5mm~3.0mm), be placed on level ground, added at steel disk center metal fuel sodium 3.0 ±
0.2kg, with cap covers steel disk.Metallic sodium is heated.When metallic sodium temperature is increased to 515 ± 5 DEG C, lid is opened
Son, metallic sodium spontaneous combustion, continue to heat, when metallic sodium temperature reaches 555 ± 5 DEG C, start to put out a fire, control fire extinguisher during fire extinguishing
Valve makes sample fall as far as possible in steel disk with appropriate flow, and can not make the place outside fuel splash to steel disk.
AEI After End of Injection, steel disk is kept to stand 4h, dry powder has residue, does not occur resume combustion, and has residual fuel in steel disk,
Then think sodium fire success of going out.
Triethyl aluminum fire of putting out a fire is tested
Square steel disk (length of side (600 ± 10) mm, height (300 ± 5) mm, disk wall thickness 2.5mm~3.0mm) is placed in level
On ground, and cover lid.In steel disk add 3kg triethyl aluminums, open steel disk on lid, triethyl aluminum spontaneous combustion, from
The combustion time starts to put out a fire when reaching 10s.Extinguisher valve is controlled sample is fallen as far as possible in steel disk with appropriate flow during fire extinguishing
In, and the place outside fuel splash to steel disk can not be made.
Attack time is not more than 3min, and is occurred without during AEI After End of Injection 30min with the sample in splash bar agitation steel disk
Resume combustion, it is believed that triethyl aluminum fire success of going out.
No matter how the residue, product after fire extinguishing stir, exposure also not resume combustion in atmosphere, with spade remaining
Thing is directly thrown into water also without vigorous reactions such as generation blasts.Residue, product chemical property after putting out a fire is steady
It is fixed, no longer have and meet air resume combustion, meet the characteristic of water blast.
Referring again to GA979-2012《D class powder extinguishing agents》The test method of middle offer and test requirements document, do respectively
The potassium that goes out fire, titanium fire, lithium fire, the experiment that lithium battery is fiery and almag is fiery.All once put out a fire successfully, and all of above examination
Test after putting out a fire successfully, the surface temperature after measurement fire extinguishing immediately, reach less than 70 DEG C, it was demonstrated that cooling-down effect is obvious.
The extinguishing chemical of the present invention is filled into suspended type ultrafine dry powder extinguishing installation and ductwork type fire extinguishing system respectively and joined
Tested according to corresponding relevant standard, also entirely reached the requirement of corresponding standard, and extinguishing effect is apparently higher than current city
The similar products at home and abroad that can be seen on field.
Claims (8)
- A kind of 1. D classes powder extinguishing agent, it is characterised in that：Parts by weight shared by constituent and each composition are barrier 10-20, foaming agent 50-70, filler 15-20, stabilizer 1-5, size 1-5, catalyst 1-5.
- 2. D classes powder extinguishing agent according to claim 1, it is characterised in that：Barrier particle size is 1-10 μm, hair 10-100 μm of infusion particle size, 10-100 μm of filler particles size, 10-20 μm of catalyst particle size.
- 3. D classes powder extinguishing agent according to claim 2, it is characterised in that：Filler is modified chlorinated sodium, potassium chloride or carbon Sour calcium.
- 4. D classes powder extinguishing agent according to claim 3, it is characterised in that：Stabilizer be stearic acid, odium stearate or Calcium stearate.
- 5. D classes powder extinguishing agent according to claim 4, it is characterised in that：Size is anion surfactant.
- 6. D classes powder extinguishing agent according to claim 5, it is characterised in that：Catalyst be cellulose, pentaerythrite or Starch.
- 7. D classes powder extinguishing agent according to claim 6, it is characterised in that：Foaming agent is high ammonium polyphosphate.
- 8. D classes powder extinguishing agent according to claim 7, it is characterised in that：Barrier be silica, silicate or Expanded graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610631599.8A CN107684684A (en) | 2016-08-04 | 2016-08-04 | A kind of metal class powder extinguishing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610631599.8A CN107684684A (en) | 2016-08-04 | 2016-08-04 | A kind of metal class powder extinguishing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107684684A true CN107684684A (en) | 2018-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610631599.8A Pending CN107684684A (en) | 2016-08-04 | 2016-08-04 | A kind of metal class powder extinguishing agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN107684684A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108815787A (en) * | 2018-08-27 | 2018-11-16 | 中国科学技术大学 | A kind of core-shell structure extinguishing chemical and preparation method thereof for metallic sodium fire |
| CN111450462A (en) * | 2020-04-29 | 2020-07-28 | 山东环绿康新材料科技有限公司 | Fire extinguishing agent for zirconium metal fire and preparation and use methods thereof |
-
2016
- 2016-08-04 CN CN201610631599.8A patent/CN107684684A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108815787A (en) * | 2018-08-27 | 2018-11-16 | 中国科学技术大学 | A kind of core-shell structure extinguishing chemical and preparation method thereof for metallic sodium fire |
| CN111450462A (en) * | 2020-04-29 | 2020-07-28 | 山东环绿康新材料科技有限公司 | Fire extinguishing agent for zirconium metal fire and preparation and use methods thereof |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180213 |