CN101961538A - Additive for preparing fire extinguishing agent - Google Patents
Additive for preparing fire extinguishing agent Download PDFInfo
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- CN101961538A CN101961538A CN2009100600777A CN200910060077A CN101961538A CN 101961538 A CN101961538 A CN 101961538A CN 2009100600777 A CN2009100600777 A CN 2009100600777A CN 200910060077 A CN200910060077 A CN 200910060077A CN 101961538 A CN101961538 A CN 101961538A
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Abstract
The invention discloses an additive for preparing a fire extinguishing agent, which comprises the following components in percentage by weight: 50 to 75 percent of base fluid with bonding effect, 8 to 15 percent of aid, 5 to 10 percent of water absorption resin, 10 to 15 percent of synergist, 1 to 5 percent of viscosity modified reinforcer and 1 to 5 percent of pH modulator. The additive solves the problems of the bonding of soil and the fire extinguishing agent and flame retardance, can inhibit the high-temperature fluid state of forest flame radiation quickly, solves the problem of the wetting property of the surface of fire extinguishing water, and provides the effective solution method according to the characteristics of gas and solid-phase fire extinguishing, flame retardance with temperature reduction, smoke suppression and adhesion and the like in forest fire extinguishing; and more important, the additive can be used for preparing the fire extinguishing agent on the fire extinguishing site quickly and conveniently, so the problem of the supply guarantee of the fire extinguishing agent on the fire extinguishing site is solved.
Description
Technical field
The present invention relates to a kind of additive of extinguishing chemical, relate in particular to the additive that a kind of earth that utilizes forest or scene, mine prepares extinguishing chemical.
Background technology
In forest extinguishing or other to put out the extinguishing device that big fire must be used more high-power energy.But on common fire fighting truck, what fill is * water system or powder extinguishing chemical, arrive fire-extinguishing location, several thousand kilograms of extinguishing chemicals have sprayed, must be through solid some subsidies, thereby only depend on that to carry at random that those several thousand kilograms of extinguishing chemicals (as the fire-fighting fire extinguishing car etc.) are as good as for large-sized fire be " an utterly inadequate amount ".Solving the timely supply guarantee of high-efficiency fire-extinguishant, is the emphasis that puts out all kinds of fire.
According to modern fire Theory of Combustion, put out A type (solid fire), in the forest fire extinguishing chemical, the mechanism that had both contained physical chemistry fire extinguishing: as catch active gene, cutting flame combustion reaction chain reaches the target of fray-out of flame, and the inert gas exclusion of oxygen of evaporation moisture content absorbing and cooling temperature generation, make it the oxygen deprivation inerting and knock down the flame, also cover colloid, and reach the purpose of knock down the flame just like the extinguishing chemical surface of solids that forms anti-flaming thermal-insulation that at high temperature reacts.
Theoretical increase it to surface of solids wet performance with experiment showed, the surface tension by reducing aqueous solution, promoting fire-retardant covering power etc. is that the important technology that improves A type extinguishing chemical extinguishing property one of ensures.
Forest extinguishing can not really solve big problem by small-sized spray.If use large jet formula Fire extinguisher apparatus, the crucial problem that needs to solve is the problem of extinguishing chemical supply guarantee, and prior art all is by carrying those several thousand kilograms of extinguishing chemicals (as the fire-fighting fire extinguishing car etc.) at random.
China Patent No. prepares protein foam extinguishing agent for " 03118972.5 " discloses a kind of activated sludge protein that utilizes, and the foam characteristics of this patent utilization activated sludge protein extracts it from activated sludge, be used to prepare protein foam extinguishing agent.Overcome traditional chemical extinguishing chemical and animal protein foam extinguishing chemical environmental pollution and vegetable protein fire foam insufficient raw material, defect of high cost with the activated sludge protein foam extinguishing agent of activated sludge protein preparation, can be widely used in the fire extinguishing on oil field, oil depot, petrochemical industry, airport etc.Advantage is to extract from activated sludge and utilize its protein, is the utilization again to waste resource, can effectively alleviate active secondary pollution of polluting mud.But and the problem of unresolved extinguishing chemical supply guarantee.
Existing relevant patent, it is the adhesion problem that has solved earth and extinguishing chemical, solved the fire-retardant problem of part, but suppress effectively fast for the high-temperature fluidized shortage of forest Fire Radiation, solved fire extinguishing water surface wellability, adhere to feature such as fire-retardant effective solution is not provided and gas in the forest extinguishing, solid phase fire extinguishing and cooling are pressed down cigarette, more fail to solve the problem of extinguishing chemical supply guarantee.Therefore, lack the real value of carrying out, the effect of perhaps putting out a fire is not good enough.
Summary of the invention
The objective of the invention is to overcome the problems referred to above that existing extinguishing chemical exists in the supply guarantee when fire extinguishing, a kind of additive for preparing extinguishing chemical is provided.The present invention has not only solved the adhesion problem and the fire-retardant problem of earth and extinguishing chemical, and can suppress effectively fast the forest Fire Radiation is high-temperature fluidized, solved fire extinguishing water surface wellability, gas in the forest extinguishing, solid phase fire extinguishing and cooling are pressed down cigarette to adhere to feature such as fire-retardant effective solution is provided, particularly importantly can prepare extinguishing chemical quickly and easily at fire-extinguishing location, solve the problem of the extinguishing chemical supply guarantee of fire-extinguishing location.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of additive for preparing extinguishing chemical is characterized in that, comprises the component of following percentage:
Base fluid with bonding effect: 50%～75%,
Auxiliary agent: 8%-15%,
Water-absorbing resin: 5%-10%,
Synergist: 10%-15%,
Viscosity modification reinforce: 1%-5%,
PH modulator: 1%-5%.
Described base fluid is a sodium metasilicate.
Described auxiliary agent is water soluble carbonate hydrogen sodium, ammonium dihydrogen phosphate (ADP), aluminium hydroxide, sulfate, aqueous solution of urea or carbonate.
Described water-absorbing resin is super absorbent polymer or hydrogel.
Described synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type cation, anion, nonionic, amphion fluorocarbon surfactant.
Described viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, cellulose nitrate, cellulose ethanoate, cellulose acetate butyrate and cellulose xanthate, methylcellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethylcellulose, cyanethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methylcellulose.
Described PH modulator is the non-hydrate sodium metasilicate aqueous solution, ammoniacal liquor or acetic acid.
Employing the invention has the advantages that:
One, the present invention can mix the efficient mud extinguishing chemical of formation with the mud of fire-extinguishing location, can supply extinguishing chemical effectively and timely at fire-extinguishing location, and attack time and consumption all are better than common ABC dry powder, can not only effectively put out a fire, and also have eco-environmental prote.
Two, the present invention has not only solved adhesion problem and the fire-retardant problem with earth, and can also suppress the high-temperature fluidized of forest Fire Radiation effectively fast, solved fire extinguishing water surface wellability, gas in the forest extinguishing, solid phase fire extinguishing and cooling have been pressed down cigarette adhere to feature such as fire-retardant effective solution is provided.
Three, the present invention can put out higher fire far away by the kinetic energy of Fire extinguisher apparatus, and this is that existing dry powder and water smoke institute are inaccessible, the fire that goes up a slope in being particularly suitable for putting out a forest fire, crowning fire.
Four, on common fire fighting truck, what fill is * water system or powder extinguishing chemical, arrive fire-extinguishing location, several thousand kilograms of extinguishing chemicals have sprayed, must subsidize through solid point, and 1000 kilograms additive among employing the present invention, can take 100000 kilograms in mud at the scene, form 50 tons-100 tons extinguishing chemical, and delivery power in the fire fighting truck space that saves can be carried materials such as more fuel oil.
Five, synergist is compound fluorine silicon class, hydrocarbon class or other surface-active preparation among the present invention, as FC-01/04 etc., make it to improve the dispersed diversity reinforcement of mud to solid table wettability, reduce the surface tension of water and improve crush force etc., and can newly add in conjunction with other effectively or soil in intrinsic various elements strengthen fire extinguishing and render a service and usefulness.
Six, auxiliary agent of the present invention is water soluble carbonate hydrogen sodium, ammonium dihydrogen phosphate (ADP), aluminium hydroxide, sulfate, aqueous solution of urea, carbonate, and metallic potassium, sodium ion are to H
+, OH
+Catching of free radical reaches cut-out combustion reaction chain, can increase the inhibition characteristic, also has the N that produces
2, CO
2Water vapour has the effect of gas phase fire extinguishing and physics fire extinguishing, realizes that blow-off velocity is fast, efficient.
Seven, the present invention implements to press down the cigarette effect by the adding of aluminium hydroxide or magnesium hydroxide.
Eight, increase the adhesion of mud after adding viscosity modification reinforce to leaf, body surface, cover fire-retardant, but both flame-retarding fire-extinguishings can be used as the fire preventing of fire insulation passage again.
The specific embodiment
Embodiment 1
A kind of additive for preparing extinguishing chemical comprises the component of following percentage:
Base fluid with bonding effect: 50%,
Auxiliary agent: 15%,
Water-absorbing resin: 10%,
Synergist: 15%,
Viscosity modification reinforce: 5%,
PH modulator: 5%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is a water soluble carbonate hydrogen sodium.Water-absorbing resin is super absorbent polymer SAP, is existing raw material, and by the polymerization generation of acrylic monomers, main raw material(s) is acrylic acid and caustic soda.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type cation fluorine carbon surface active agent.Viscosity modification reinforce is derivative water-soluble or the aqueous dispersion fiber, for example hydroxypropyl methylcellulose.The PH modulator is the non-hydrate sodium metasilicate aqueous solution.
Production method of the present invention is, with the said components of combination by mass percentage, adds respectively among the base fluid container containing, and the addition sequence of each component does not have specific (special) requirements, mixes to form concentrate formulation, mix mix well after, pH value 6.5-7 forms additive.
Adopt the technological process of in situ preparation extinguishing chemical of the present invention as follows:
The mud feedstock production of a, soil
1, at fire-extinguishing location, by with car earth mining machinery or manpower digging, the digging clod, and enter and pulverize equipment.Learn from soil physics, stone chad in the soil, the stone chad is mainly by red rock fragment and coarse grain mineral composition, sand grains in the soil produces mineral, quartz etc. by chip and forms, wherein silica and iron-aluminium oxide content surpass more than 80%, the dispersiveness that helps the mud extinguishing chemical, the clay in the soil mainly are made up of mud sial salt, also contain moisture etc. in the soil.
2, the bulk stone can be removed coarse crushing by mechanical filtering or manual type after, comparatively the earth of uniform grading send into the mixing tank body.
In b, the fire suppression applications, additive is mixed stirring formed efficient mud extinguishing chemical in 5-10 minute with gained soil grain.
D, according to on-the-spot actual state, can replenish and add entry, the volume ratio of extinguishing chemical and water is 1: 2, forms dilution type fire extinguishing slurry.
After forming extinguishing chemical, can the fire extinguishing of remote by mud expulsion pressure device, big sector.
Embodiment 2
A kind of additive for preparing extinguishing chemical comprises the component of following percentage:
Base fluid with bonding effect: 75%,
Auxiliary agent: 8%,
Water-absorbing resin: 5%,
Synergist: 10%,
Viscosity modification reinforce: 1%,
PH modulator: 1%.
Among the present invention, base fluid is an alkaline sodium silicate.Auxiliary agent is the water-soluble phosphoric acid ammonium dihydrogen.Water-absorbing resin is a hydrogel.Synergist is a FC-01 perfluoroalkyl ethers alcohol amine salt type anion fluorocarbon surfactant.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, cellulose nitrate.The PH modulator is ammoniacal liquor or acetic acid.
Embodiment 3
A kind of additive for preparing extinguishing chemical comprises the component of following percentage:
Base fluid with bonding effect: 60%,
Auxiliary agent: 15%,
Water-absorbing resin: 5%,
Synergist: 10%,
Viscosity modification reinforce: 5%,
PH modulator: 5%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is water-soluble aluminium hydroxide.Water-absorbing resin is super absorbent polymer.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type non-ion fluorin carbon surface active agent.Viscosity modification reinforce is a cellulose ethanoate.The PH modulator is the non-hydrate sodium metasilicate aqueous solution.
Embodiment 4
A kind of additive for preparing extinguishing chemical comprises the component of following percentage:
Base fluid with bonding effect: 67%,
Auxiliary agent: 8%,
Water-absorbing resin: 5%,
Synergist: 10%,
Viscosity modification reinforce: 5%,
PH modulator: 5%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is a water soluble sulfate, as, sodium sulphate.Water-absorbing resin adopts existing hydrogel.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type amphion fluorocarbon surfactant.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, cellulose acetate butyrate and cellulose xanthate.The PH modulator is an acetic acid.
Embodiment 5
A kind of additive for preparing extinguishing chemical comprises the component of following percentage:
Base fluid with bonding effect: 55%,
Auxiliary agent: 15%,
Water-absorbing resin: 8%,
Synergist: 12%,
Viscosity modification reinforce: 5%,
PH modulator: 5%.
Among the present invention, described base fluid is a sodium metasilicate.Auxiliary agent is an aqueous solution of urea.Water-absorbing resin is super absorbent polymer.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type cation fluorine carbon surface active agent.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, methylcellulose.The PH modulator is an acetic acid.
Embodiment 6
A kind of additive for preparing extinguishing chemical is characterized in that, comprises the component of following percentage:
Base fluid with bonding effect: 63%,
Auxiliary agent: 12%,
Water-absorbing resin: 5%,
Synergist: 10%,
Viscosity modification reinforce: 5%,
PH modulator: 5%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is a carbonate.Water-absorbing resin is a hydrogel.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type anion fluorocarbon surfactant.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, carboxymethyl cellulose.The PH modulator is the non-hydrate sodium metasilicate aqueous solution.
Embodiment 7
A kind of additive for preparing extinguishing chemical is characterized in that, comprises the component of following percentage:
Base fluid with bonding effect: 70%,
Auxiliary agent: 9%,
Water-absorbing resin: 7%,
Synergist: 10%,
Viscosity modification reinforce: 2%,
PH modulator: 2%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is a water soluble carbonate hydrogen sodium.Water-absorbing resin is a hydrogel.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type amphion fluorocarbon surfactant.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, ethyl cellulose.The PH modulator is an ammoniacal liquor.
Embodiment 8
A kind of additive for preparing extinguishing chemical is characterized in that, comprises the component of following percentage:
Base fluid with bonding effect: 60%,
Auxiliary agent: 10%,
Water-absorbing resin: 7%,
Synergist: 13%,
Viscosity modification reinforce: 5%,
PH modulator: 5%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is an aqueous solution of urea.Water-absorbing resin is super absorbent polymer.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type cation fluorine carbon surface active agent.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, hydroxyethylcellulose.The PH modulator is an ammoniacal liquor.
Embodiment 9
A kind of additive for preparing extinguishing chemical comprises the component of following percentage:
Base fluid with bonding effect: 70%,
Auxiliary agent: 10%,
Water-absorbing resin: 6%,
Synergist: 10%,
Viscosity modification reinforce: 2%,
PH modulator: 2%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is an ammonium dihydrogen phosphate (ADP).Water-absorbing resin is super absorbent polymer.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type anion fluorocarbon surfactant.Viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber, as, cyanethyl cellulose.The PH modulator is the non-hydrate sodium metasilicate aqueous solution.
Embodiment 10
A kind of additive for preparing extinguishing chemical is characterized in that, comprises the component of following percentage:
Base fluid with bonding effect: 60%,
Auxiliary agent: 10%,
Water-absorbing resin: 10%,
Synergist: 12%,
Viscosity modification reinforce: 3%,
PH modulator: 5%.
Among the present invention, base fluid is a sodium metasilicate.Auxiliary agent is a carbonate.Water-absorbing resin is a hydrogel.Synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation, as FC-01 perfluoroalkyl ethers alcohol amine salt type cation fluorine carbon surface active agent.Viscosity modification reinforce is a polyvinyl alcohol.The PH modulator is the non-hydrate sodium metasilicate aqueous solution.
Obviously; those of ordinary skill in the art is according to technological know-how of being grasped and customary means; according to above said content, can also make the various ways that does not break away from basic fundamental thought of the present invention, these pro forma conversion are all within protection scope of the present invention.
Claims (7)
1. an additive for preparing extinguishing chemical is characterized in that, comprises the component of following percentage:
Base fluid with bonding effect: 50%-75%,
Auxiliary agent: 8%-15%,
Water-absorbing resin: 5%-10%,
Synergist: 10%-15%,
Viscosity modification reinforce: 1%-5%,
PH modulator: 1%-5%.
2. the additive of preparation extinguishing chemical according to claim 1 is characterized in that: described base fluid is a sodium metasilicate.
3. the additive of preparation extinguishing chemical according to claim 1 is characterized in that: described auxiliary agent is water soluble carbonate hydrogen sodium, ammonium dihydrogen phosphate (ADP), aluminium hydroxide, sulfate, aqueous solution of urea or carbonate.
4. the additive of preparation extinguishing chemical according to claim 1 is characterized in that: described water-absorbing resin is super absorbent polymer or hydrogel.
5. the additive of preparation extinguishing chemical according to claim 1 is characterized in that: described synergist is compound fluorine silicon class, hydrocarbon class, biodegradation type fluorine carbon or other surface-active preparation.
6. the additive of preparation extinguishing chemical according to claim 1 is characterized in that: described viscosity modification reinforce is water-soluble or the derivative or the polyvinyl alcohol of aqueous dispersion fiber.
7. the additive of preparation extinguishing chemical according to claim 1 is characterized in that: described PH modulator is the non-hydrate sodium metasilicate aqueous solution, ammoniacal liquor or acetic acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100600777A CN101961538A (en) | 2009-07-22 | 2009-07-22 | Additive for preparing fire extinguishing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100600777A CN101961538A (en) | 2009-07-22 | 2009-07-22 | Additive for preparing fire extinguishing agent |
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| Publication Number | Publication Date |
|---|---|
| CN101961538A true CN101961538A (en) | 2011-02-02 |
Family
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|---|---|---|---|
| CN2009100600777A Pending CN101961538A (en) | 2009-07-22 | 2009-07-22 | Additive for preparing fire extinguishing agent |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173722A (en) * | 2011-02-16 | 2011-09-07 | 中国矿业大学(北京) | Composite gel for preventing spontaneous combustion of coal |
| CN102258836A (en) * | 2011-05-11 | 2011-11-30 | 浙江威龙高分子材料有限公司 | Flame-retarding fire extinguishing agent for coal mines |
| CN104645539A (en) * | 2013-11-19 | 2015-05-27 | 姚金华 | Ammonia-free gel |
| CN104874145A (en) * | 2015-06-16 | 2015-09-02 | 公安部四川消防研究所 | Slurry fire extinguishing agent for extinguishing stacking fire |
| CN104922844A (en) * | 2015-06-04 | 2015-09-23 | 公安部四川消防研究所 | Fire extinguishing agent for extinguishing cotton textile stack fire |
| CN106880920A (en) * | 2017-02-15 | 2017-06-23 | 陈闽玲 | The special extinguishing chemical of petrochemical industry class fire |
| CN111093777A (en) * | 2017-07-06 | 2020-05-01 | 瑞士消防研发公司 | Post-foaming composition for fire and/or heat protection |
| CN114917522A (en) * | 2022-06-07 | 2022-08-19 | 贾镜炜 | Fire extinguishing material and preparation method thereof |
-
2009
- 2009-07-22 CN CN2009100600777A patent/CN101961538A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173722A (en) * | 2011-02-16 | 2011-09-07 | 中国矿业大学(北京) | Composite gel for preventing spontaneous combustion of coal |
| CN102258836A (en) * | 2011-05-11 | 2011-11-30 | 浙江威龙高分子材料有限公司 | Flame-retarding fire extinguishing agent for coal mines |
| CN102258836B (en) * | 2011-05-11 | 2012-11-14 | 浙江威龙高分子材料有限公司 | Flame-retarding fire extinguishing agent for coal mines |
| CN104645539A (en) * | 2013-11-19 | 2015-05-27 | 姚金华 | Ammonia-free gel |
| CN104922844A (en) * | 2015-06-04 | 2015-09-23 | 公安部四川消防研究所 | Fire extinguishing agent for extinguishing cotton textile stack fire |
| CN104922844B (en) * | 2015-06-04 | 2018-08-21 | 公安部四川消防研究所 | A kind of extinguishing chemical for putting out cotton spinning stacking fire |
| CN104874145A (en) * | 2015-06-16 | 2015-09-02 | 公安部四川消防研究所 | Slurry fire extinguishing agent for extinguishing stacking fire |
| CN104874145B (en) * | 2015-06-16 | 2018-11-20 | 公安部四川消防研究所 | It is a kind of for putting out the mud extinguishing chemical of stacking fire |
| CN106880920A (en) * | 2017-02-15 | 2017-06-23 | 陈闽玲 | The special extinguishing chemical of petrochemical industry class fire |
| CN111093777A (en) * | 2017-07-06 | 2020-05-01 | 瑞士消防研发公司 | Post-foaming composition for fire and/or heat protection |
| CN111093777B (en) * | 2017-07-06 | 2021-08-10 | 瑞士消防研发公司 | Alkaline post-foaming composition for fire and/or heat protection |
| CN114917522A (en) * | 2022-06-07 | 2022-08-19 | 贾镜炜 | Fire extinguishing material and preparation method thereof |
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Application publication date: 20110202 |