CN1730128A - Highly effective (hydrated) oxide aqueous sol gel fire-extinguishing agent and application thereof - Google Patents
Highly effective (hydrated) oxide aqueous sol gel fire-extinguishing agent and application thereof Download PDFInfo
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Abstract
Disclosed a new high efficient (hydroxide) oxide sol-gel fire retardant comprises the oxide or the hydroxide of metal to be prepared by the dispersion method or chemical method into the (hydroxide) oxide water fire retardant sol. The invention can be prepared from one or more (hydroxide) oxide in any proportion; some salt and some surface activator can be added to increase the fire retardant property. In addition, the particle power made from said (hydroxide) oxide water fire retardant sol also can be utilized in the dry powder retardant, water fire-extinguishing system, water spray fire-proof system, water fog system and water coat foam fire-extinguishing system as the additive of fire retardant. The invention is environment friendly, innocuous and high efficient which can cut the firing chain (restraining fire chain) and save water energy, therefore, it can widely be used in different fire-extinguishing systems.
Description
Technical field
The invention belongs to the fire prevention field, relate to a kind of extinguishing chemical and application thereof, especially a kind of efficient (hydrogen) oxide aqueous sol gel extinguishing chemical and application thereof.
Background technology
Fire is the disaster that current society takes place frequently, and often causes the massive losses of lives and properties.How to stamp out a fire rapidly, save life as far as possible, reduce economic loss, become the thing that the common people and government pay special attention to.
Common extinguishing chemical generally is water extinguishing chemical, fire foam, powder extinguishing agent, aerosol extinguishing agent, mist fire-fighting agent etc., and each class can be subdivided into multinomial again.But no matter why not together kind has, its principle all is the isolation combustion adjuvant, reduces the fiery point of combustion, cuts off pyric chain (inhibition pyric chain) etc.
In general, be mainly used in the easy fire extinguisher such as public occasion, laboratory, factory, play at the initial stage of catching fire and just put out burning things which may cause a fire disaster rapidly, with the effect of the further expansion that prevents the intensity of a fire as fire foam, powder extinguishing agent etc.Yet in large-area fire, mostly adopting clear water is extinguishing chemical; For some the airtight environment the insides that can't carry out evacuating personnel as ship, aircraft etc., general water smoke fire-fighting system and Ha Long (Halons) fire-fighting system of adopting put out a fire, and often there are some toxicity in other extinguishing chemical, or even high toxicity and being greatly limited.
Water fire extinguishing is a kind of ancient and natural widely extinguishing chemical of the scope of application, is easy to obtain and store, and is playing the part of important role at fire-fighting domain always.Yet on the mechanism of water fire extinguishing, we are not difficult to find out, compare with other extinguishing chemical, and the water fire extinguishing exists obvious defects, and for example: water can not play the effect of rapid fire extinguishing for inflammable organic liquid and gas; Need a large amount of water during fire extinguishing, often some article are caused damage, at this shortcoming, the someone has developed as fire-extinguishing agent patents such as polymer waterborne water-absorbing resin extinguishing chemicals, as CN200410015909.0; And water has significant limitation to some fire, even plays the effect of adding fuel to the flames sometimes.
Therefore, the extinguishing chemical that is cut off pyric chain (inhibition pyric chain) by the halogenated hydrocarbons of Ha Long company invention has entered people's the visual field, and becomes the important weapon and the powerful mean of fire-fighting domain rapidly, and uses every field widely., the development of making rapid progress along with science and technology and to the pay attention to day by day of environmental protection subject under discussion, fire-fighting system also must meet the needs of environmental protection.Studies confirm that fluorine chlorine compound and other compound meeting accelerate ozone change into the speed of oxygen, in other words, the reduction just gradually of the ozone thickness in the atmosphere.The function of ozone can only not filter out the fierce solar radiant heat that destroys earth animal and plant life, and the adjustable ground bulb temperature.In 1987, by standard in the U.S. and each big industrial country of the whole world Montreux Convention (MotrealProtocol) of being signed the fluorine chlorine compound production and use amount and limit its manufacturing and be positioned at stratospheric ozone with protection.So, the halogenated hydrocarbons extinguishing chemical in more than the 10 years fire-fighting domain that fades out of having to has appearred having only.
Now, exist the improvement of three aspects with regard to halon fire agent: the first adds catalyst, as CN1097347A, make described in the CN90106745.8 when halogenated hydrocarbons is put out a fire in the halon fire agent and resolve into the material that does not influence ozone layer, but do not see that also such catalyst is used for fire-fighting domain at present.It two is the halon fire agents of sublating, and gets the mechanism that it reasonably cuts off pyric chain, completely newly develops " clean gas " and substitutes and breathe out imperial halogenated hydrocarbon gas, as adopt airborne inert gas, fluorine iodine hydrocarbon system etc.It three is to abandon to breathe out imperial fire extinguishing system, develops brand-new fire extinguishing system, as water mist system, and aerosol systems etc.Yet any fire extinguishing system is not general being accepted by people as breathing out imperial fire extinguishing system all.
Based on this, develop and a kind ofly can be applied to the green extinguishing chemical that any aqueous systems extinguishing chemical, water smoke system, fire foam etc. are safe, nontoxic, environment almost do not had the water environmental protection of influence, and can be used for airtight or the semi-hermetic space, fire extinguishing as boats and ships, aircraft, internal combustion engine, automobile etc., also can be used for comparatively open space, as the substitute of halon fire agent of water environment-friendly high-efficiency that is used to put out the fire etc. of oil or natural gas becomes a kind of demand.
Summary of the invention
The object of the invention provides a kind of new and effective (hydrogen) oxide aqueous sol gel extinguishing chemical, use its fire extinguishing, can have cut-out pyric chain (inhibition pyric chain), can play water saving effect again, the space that can also be used for airtight semi-hermetic, as the fire extinguishing system of the fire extinguishing system of subterranean railway, boats and ships, factory especially factory building or electric substation, the laboratory etc. of some electrical equipments, also can be used for comparatively open space, as be used to fire that puts out oil or natural gas etc., can also be used for the free of contamination fire-fighting domain of conventional fire.
In general, " fire " is a kind of phenomenon of the strong chemical reaction of a speciogenesis in fact in the fire.For the fire on the common meaning, the main chemical reaction that takes place of compound of forming by elements such as carbon, hydrogen and oxygen.But no matter what, fire be because therefore the result of rough burning comprises four principal elements, i.e. comburant, oxidizer (being generally oxygen), ignition point and pyric chain.So the elimination fire as long as restrain wherein any one key element, just can be effective.Certainly, if suppress a plurality of factors simultaneously,, just can reduce the loss of people's security of the lives and property to a greater extent to quick extinguishing.
(hydrogen) of the present invention oxide sol gel extinguishant is an aqueous systems because of it, and one of its extinguishing mechanism comprises the effect that suffocates and cool off, and promptly every kg water is heated to boiling point and complete carburation by evaporation from normal temperature, can absorb the heat of 2593.4KJ.Therefore, it utilizes the ability performance extinguishing by cooling effect that self absorbs sensible heat and latent heat, is that other extinguishing chemical is incomparable.And (hydrogen) oxide sol gel is physics and chemical action that water and (hydrogen) oxide form complexity, be two-way interaction's result, so except the heat that needs the 2593.4KJ/Kg that water becomes, also need to destroy this physics and bonding force chemistry, this is that pure clear water extinguishing chemical can not be compared.Certainly, the steam that water is vaporized back formation is inert gas, and volume will expand about 1700 times.When fire extinguishing, the steam that is produced by water vapor will occupy the space of combustion zone, the oxygen content around the dilute combustion thing, hinder fresh air and enter the combustion zone, the oxygen concentration in the combustion zone be reduced greatly, thereby reach the purpose of fire smothering.When water is spray when vaporific, the water droplet of formation and the specific area of droplet will increase greatly, strengthen the heat exchange action between water and the fire, thereby strengthen its cooling and smothering action; And also can play diluting effect to some flammable, flammable liquids soluble in water; That the water smoke that adopts strong jet to produce can make is flammable, flammable liquid produces emulsification, makes that liquid surface cools off rapidly, combustible vapor generation speed descends and the fire-extinguishing function concurrently that reaches the glassware for drinking waters such as purpose of fire extinguishing and have all possesses.
(hydrogen) of the present invention oxide sol gel extinguishant is a kind of metal oxide dioxide photocatalyst titanium (TiO
2) or metal oxide dioxide photocatalyst titanium (TiO
2) with one or more (hydrogen) oxides as (hydrogen) oxide sol gel mixture of (hydrogen) zinc oxide, (hydrogen) aluminium oxide, (hydrogen) magnesia, (hydrogen) silica etc., because of having the photocatalyst effect, can play effect as halon fire agent.This is because photocatalyst can generate electronics electricity hole with light reaction, electronics electricity hole respectively with keep necessary H of burning and OH and be reacted into H
+And OH
-And then be combined into water, inhibitory reaction mechanism is as follows:
The colloidal sol particulate of (hydrogen) oxide in (hydrogen) of the present invention oxide sol gel extinguishant is 0.1～10, between 000 nanometer, have very large specific area, promptly having very large surface can, (hydrogen) oxide is as magnesia (MgO), aluminium oxide (Al
2O
3), titanium dioxide (TiO
2), magnesium hydroxide (Mg (OH)
2), oxygen aluminium oxide (AI (OH)
3) wait and have very high decomposition temperature, so extremely difficult decomposition or gasification, after so colloidal sol or solia particle enter the scene of a fire, the impact of pyrolysis product is subjected to burning, can adsorb more than free radicals such as they little H, OH, O, add they self reaction, thereby reach the purpose that consumes pyric chain, cut off or suppress pyric chain.The mechanism reaction is as follows:
Technical solution of the present invention is:
A kind of new and effective (hydrogen) oxide sol gel extinguishant is by a kind of metal oxide dioxide photocatalyst titanium (TiO
2) collosol and gel, or metal oxide dioxide photocatalyst titanium (TiO
2) collosol and gel and one or more (hydrogen) oxides be as (hydrogen) the oxide sol gel or the powder mixture of (hydrogen) zinc oxide, (hydrogen) aluminium oxide, (hydrogen) magnesia, (hydrogen) silica etc., (hydrogen) the oxide aqueous extinguishing chemical collosol and gel that adopts the mode of dispersion method and chemical method to be prepared into.
Metal oxide dioxide photocatalyst titanium (TiO wherein
2) collosol and gel is to utilize titanium tetrachloride or titanium sulfate behind dissolved dilution, concentration can be 0.1～80.0%, with ammoniacal liquor (NH
3) be adjusted between PH=7.0～9.0 and produce titanium hydroxide, behind washing filtering, the titanium hydroxide filter cake is scattered in the water, add proper amount of oxidant and (comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassium chromate (K
2CrO
4), chloric acid (KClO
3), potassium hyperchlorate (KClO
4), postassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) etc.), and after continuing to heat 1～48 hour with 50～90 ℃ of temperature, formed metal oxide dioxide photocatalyst titanium (TiO
2) the collosol and gel aqueous solution, having visible light photocatalyst characteristic, titanium dioxide concentration can be between 0.01%～15%.
Wherein (hydrogen) zinc oxide collosol and gel is to utilize zinc chloride or zinc sulfate behind dissolved dilution, and concentration can be 0.1～80.0%, with ammoniacal liquor (NH
3) be adjusted to and produce zinc hydroxide (Zn (OH) between PH=4.0～9.0
2), behind washing filtering, with zinc hydroxide (Zn (OH)
2) filter cake is scattered in and is zinc hydroxide (Zn (OH) in the water
2) collosol and gel.Add proper amount of oxidant and (comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassium chromate (K
2CrO
4), chloric acid (KClO
3), potassium hyperchlorate (KClO
4), postassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) etc.), and after continuing to heat 1～48 hour with 50～90 ℃ of temperature, can form metal oxide zinc oxide (ZnO) the collosol and gel aqueous solution.
Wherein (hydrogen) alumina sol gel is to utilize aluminium chloride or aluminum sulfate behind dissolved dilution, and concentration can be 0.1～80.0%, with ammoniacal liquor (NH
3) be adjusted between PH=4.0～9.0 and produce aluminium hydroxide, behind washing filtering, the gained aluminum hydroxide filter cake is scattered in is the aluminum hydroxide sol gel in the water.Add proper amount of oxidant and (comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassium chromate (K
2CrO
4), chloric acid (KClO
3), potassium hyperchlorate (KClO
4), postassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) etc.), and after continuing to heat 1～48 hour with 50～90 ℃ of temperature, can form metal oxide alumina sol gel solution.
Wherein (hydrogen) magnesia collosol and gel is to utilize magnesium chloride or magnesium sulfate behind dissolved dilution, and concentration can be 0.1～80.0%, with ammoniacal liquor (NH
3) be adjusted between PH=4.0～9.0 and produce magnesium hydroxide, behind washing filtering, gained magnesium hydroxide filter cake is scattered in is the magnesium hydroxide collosol and gel in the water.Add proper amount of oxidant and (comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassium chromate (K
2CrO
4), chloric acid (KClO
3), potassium hyperchlorate (KClO
4), postassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) etc.), and after continuing to heat 1～48 hour with 50～90 ℃ of temperature, can form metal oxide magnesia (MgO) the collosol and gel aqueous solution.
A kind of new and effective (hydrogen) oxide sol gel extinguishant is characterized in that its oxide or hydroxide extinguishing chemical are aqueous sol gel, and its pH is between 6.0～11.0.
A kind of new and effective (hydrogen) oxide sol gel extinguishant is characterized in that the particle size of its oxide or hydroxide extinguishing chemical aqueous sol gel can be between 0.1nm～10, and 000nm accounts for total particle weight 0.1%～99.9% at the particle of this scope.
A kind of new and effective (hydrogen) oxide sol gel extinguishant is characterized in that its oxide or hydroxide extinguishing chemical aqueous sol gel can be one or more it (hydrogen) oxide water-based fire extinguishing colloidal sol with any ratio mixing.
In order to obtain better to put out a fire effect, can in system, add a little surfactants, especially the surfactant of some low surface tensions, as: fluorine-containing surfactant, silicon-containing surfactant, non-ionic surface active agent, cationic surfactant, anion surfactant, amphoteric surfactant etc.; Working concentration is between 0～100 in this extinguishing chemical for surfactant, and 000ppm is to obtain better to put out a fire effect.Surfactant can directly be dissolved in the water, and evenly mixes with oxide or hydroxide extinguishing chemical aqueous sol gel to get final product again.
Oxide or hydroxide particulate powder in (hydrogen) of the present invention oxide sol gel extinguishant, can be applied directly in the powder extinguishing agent, be used as the extinguishing chemical additive in the fire-fighting system such as clear water fire extinguishing system, water spray fire prevention system, water mist system, moisture film froth fire extinguishing system, in the mode that stirs oxide or hydroxide particulate powder are fully disperseed, working concentration is between 0.1～500 in this extinguishing chemical, 000ppm.
The specific embodiment
The present invention will be described that test example 1. adopts 1% TiO 2 sols and 1% titanium oxide and 3% silica mixings aqueous sol have carried out respectively testing obtaining the dsc endothermic curve under an atmospheric pressure below in conjunction with test and specific embodiment,
1% TiO 2 sol totally 6,200mg, the dsc endothermic curve under an atmospheric pressure uses Ce Try Let Prepare to be NETZSCH DSC 200PC, and 119.4 ℃ of Qi Shi Dot 100.9 ℃ ， Final Zhi Dot can learn that every gram colloidal sol can absorb the 1696J heat; 1% titanium oxide and 3% silica mixing aqueous sol totally 8,700mg, the dsc endothermic curve under an atmospheric pressure, use Ce Try Let Prepare as 118.7 ℃ of NETZSCH DSC 200PC Qi Shi Dot 100.5 ℃ ， Final Zhi Dot, can learn that every gram colloidal sol can absorb the 1841J heat; And learn that by document the dsc endothermic curve of water under an atmospheric pressure is that every gram water absorbs the 1250J heat, so the fire-fighting efficiency of (hydrogen) oxide sol gel extinguishant can obviously improve.
The fire extinguishing experiment of embodiment 1. single (hydrogen) oxide sol gel:
1, utilize titanium sulfate behind dissolved dilution, concentration is 22.0%, with ammoniacal liquor (NH
3) be adjusted to PH=7.2 generation titanium hydroxide, behind washing filtering, the titanium hydroxide filter cake is scattered in the water, add proper amount of oxidant hydrogen peroxide (H
2O
2), and after continuing to heat 38 hours with 70 ℃ of temperature, formed metal oxide dioxide photocatalyst titanium (TiO
2) the collosol and gel aqueous solution, have visible light photocatalyst characteristic.The titanium oxide sol of preparation is diluted to 0.5% aqueous solution, and this colloidal sol can spray in the fire with hydraulic giant, plays the fire extinguishing effect.
2, aluminium chloride is behind dissolved dilution, and concentration is 10.0%, with ammoniacal liquor (NH
3) be adjusted to PH=5.5 and produce aluminium hydroxide, behind washing filtering, the gained aluminum hydroxide filter cake is scattered in is the aluminum hydroxide sol gel in the water.Add proper amount of oxidant, potassium permanganate (KMnO
4), and after continuing to heat 44 hours with 80 ℃ of temperature, can form metal oxide aluminium oxide (Al
2O
3) the collosol and gel aqueous solution.(hydrogen) alumina sol of preparation is diluted to 1.5% aqueous solution, and this colloidal sol can spray in the fire with hydraulic giant, plays the fire extinguishing effect.
3, utilize zinc sulfate behind dissolved dilution, concentration can be 35.O%, with ammoniacal liquor (NH
3) be adjusted to PH=6.8 and produce zinc hydroxide, behind washing filtering, zinc hydroxide is scattered in is the zinc hydroxide sol gel in the water.Add proper amount of oxidant potassium bichromate (K
2Cr
2O
7), and after continuing to heat 22 hours with 85 ℃ of temperature, can form metal oxide zinc oxide (ZnO) the collosol and gel aqueous solution.(hydrogen) zinc oxide colloidal sol of preparation is diluted to the 3.O% aqueous solution, and this colloidal sol can spray in the fire with hydraulic giant, plays the fire extinguishing effect.
Other (hydrogen) oxide is similar to the front.
Attack time table of comparisons 1*
| Extinguishing chemical | Solid content/% | Attack time/s | Remarks |
| Clear water | 0 | 52 | |
| Zinc hydroxide sol | 3 | 15 | |
| Zinc oxide colloidal sol | 3 | 18 | The photocatalyst effect is arranged |
| TiO 2 sol | 0.5 | 15 | The photocatalyst effect is arranged |
| Aluminum hydroxide sol | 0.7 | 11 | |
| Alumina sol | 0.7 | 13 | |
| Magnesium hydroxide colloidal sol | 5 | 12 | |
| Magnesia colloidal sol | 5 | 17 | |
| Silica sol | 3 | 14 |
* annotate: burning things which may cause a fire disaster is an absolute ethyl alcohol
As can be seen from Table 1, adopt (hydrogen) oxide sol to be better than clear water fire extinguishing effect far away as the effect of extinguishing chemical.
Embodiment 2. mixes the fire extinguishing experiment of (hydrogen) oxide sol
In this fire extinguishing experiment, adopt respectively and mix (hydrogen) oxide sol and carry out hydraulic giant fire extinguishing experiment, (hydrogen) oxide sol synthetic shown in embodiment one.
Attack time table of comparisons 2*
| Extinguishing chemical | Proportioning | Total solid content/% | Attack time/s |
| Clear water | - | - | 51 |
| TiO 2 sol+zinc oxide colloidal sol | 1∶1 | 3 | 12 |
| TiO 2 sol+zinc hydroxide sol | 2∶1 | 3 | 10 |
| TiO 2 sol+silicon dioxide gel | 0.5∶1 | 3 | 8 |
| TiO 2 sol+aluminum hydroxide sol | 3∶5 | 3 | 7 |
| TiO 2 sol+alumina sol | 1∶1 | 3 | 9 |
| TiO 2 sol+magnesia colloidal sol | 2∶1 | 3 | 12 |
| TiO 2 sol+magnesium hydroxide colloidal sol | 7∶8 | 3 | 14 |
| TiO 2 sol+alumina sol+silica sol | 1∶2∶3 | 3 | 7 |
| TiO 2 sol+aluminum hydroxide sol+silica sol | 3∶2∶3 | 3 | 6 |
Annotate: the * burning things which may cause a fire disaster is an absolute ethyl alcohol;
As can be seen from Table II, adopt to mix (hydrogen) oxide sol as the good extinguishing effect of extinguishing chemical in the fire extinguishing effect of clear water.
3. experiments of embodiment are checking titanium oxide sol effects to different organic solvent fire extinguishings, and organic solvent is respectively ether, ethyl acetate, acetone, benzinum, cyclohexane, methyl alcohol, toluene, oxolane, carbon disulfide, and experimental result is as shown in table 4.
Attack time table of comparisons 3*
| Organic solvent | Attack time/s | Organic solvent | Attack time/s | Organic solvent | Attack time/s |
| Ether | 6 | Benzinum | 8 | Toluene | 2 |
| Ethyl acetate | 2 | Cyclohexane | 1 | Oxolane | 1 |
| Acetone | 6 | Methyl alcohol | 5 | Carbon disulfide | 2 |
As can be seen from Table 3, TiO 2 sol is to very good of the fire extinguishing effect of organic solvent.
4. experiments of embodiment are checking alumina sol effects to different organic solvent fire extinguishings, and organic solvent is respectively ether, ethyl acetate, acetone, benzinum, cyclohexane, methyl alcohol, toluene, oxolane, carbon disulfide, and experimental result is as shown in table 4.
Attack time table of comparisons 4*
| Organic solvent | Attack time/s | Organic solvent | Attack time/s | Organic solvent | Attack time/s |
| Ether | 8 | Benzinum | 10 | Toluene | 3 |
| Ethyl acetate | 4 | Cyclohexane | 2 | Oxolane | 3 |
| Acetone | 7 | Methyl alcohol | 6 | Carbon disulfide | 3 |
As can be seen from Table 4, magnesia colloidal sol is to very good of the fire extinguishing effect of organic solvent.
5. experiments of embodiment are checking aluminum hydroxide sol effects to different organic solvent fire extinguishings, organic solvent is respectively ether, ethyl acetate, acetone, benzinum, cyclohexane, methyl alcohol, toluene, oxolane, carbon disulfide, and experimental result is as shown in table 4.
Attack time table of comparisons 5*
| Organic solvent | Attack time/s | Organic solvent | Attack time/s | Organic solvent | Attack time/s |
| Ether | 7 | Benzinum | 9 | Toluene | 4 |
| Ethyl acetate | 3 | Cyclohexane | 3 | Oxolane | 4 |
| Acetone | 6 | Methyl alcohol | 5 | Carbon disulfide | 3 |
As can be seen from Table 5, aluminum hydroxide sol is to very good of the fire extinguishing effect of organic solvent.
6. experiments of embodiment are checking magnesium hydroxide colloidal sol effects to different organic solvent fire extinguishings, organic solvent is respectively ether, ethyl acetate, acetone, benzinum, cyclohexane, methyl alcohol, toluene, oxolane, carbon disulfide, and experimental result is as shown in table 4.
Attack time table of comparisons 6*
| Organic solvent | Attack time/s | Organic solvent | Attack time/s | Organic solvent | Attack time/s |
| Ether | 10 | Benzinum | 11 | Toluene | 5 |
| Ethyl acetate | 4 | Cyclohexane | 4 | Oxolane | 6 |
| Acetone | 7 | Methyl alcohol | 10 | Carbon disulfide | 7 |
As can be seen from Table 6, magnesium hydroxide colloidal sol is to very good of the fire extinguishing effect of organic solvent.
(hydrogen) of the present invention oxide sol gel extinguishant has following Te Dian:
1. environment-protecting asepsis. In combustion process, the poisonous organic gas that produces under the photocatalysis condition, can be oxidized to rapidly the nontoxic products such as carbon dioxide and water, has ensured greatly the life of trapped personnel;
2. conserve water energy, high-effect fire-extinguishing. Find in the experimentation that the fire under the similarity condition, aerosol extinguishing agent only are below 1/4 usefulness of clear water extinguishing chemical. Because of viscosity almost with water with, that is to say that the water that ejects during fire extinguishing speed is almost identical with colloidal sol speed, thus can think like this, almost few nearly 3/4 with the time, shortened greatly the threat of the intensity of a fire to people's lives and properties;
3. (hydrogen) of the present invention oxide sol is nontoxic, and the stable difficult decomposition of inorganic material prescription is conveniently transported and stored, and shelf stable for periods reached more than 5 years;
4. the content of total (hydrogen) oxide in hydrosol system of (hydrogen) of the present invention oxide sol gel extinguishant is very low, only has between 0.01%～20%, and generally about 0.1%～10%, cost is very low;
5. after the fire extinguishing of (hydrogen) of the present invention oxide sol gel extinguishant, (hydrogen) oxide sol is under the light source irradiations such as lamp and artificial light sources, accessory substance in the time of can eliminating the burning such as burning peculiar smell, residual volatile organic compounds plays the effect that purifies air;
6. (hydrogen) of (hydrogen) of the present invention oxide sol gel extinguishant even oxide sol can not decompose under hot conditions yet, and stable existence plays the effect that suppresses pyric chain always, can also eliminate combustion residue after the fire extinguishing;
7. (hydrogen) of the present invention oxide sol gel extinguishant is neutral (hydrogen) oxide sol, and etching apparatus does not have fire equipment now without transforming or slightly doing transformation and can use;
8. (hydrogen) oxide fine particle powder of (hydrogen) of the present invention oxide sol gel extinguishant can be applied directly in the powder extinguishing agent, perhaps as the additive of powder extinguishing agent;
9. (hydrogen) of the present invention oxide sol gel extinguishant can be widely applied in the fire-fighting systems such as clear water fire extinguishing system, water spray fire prevention system, water mist system, Halon's succedaneum fire extinguishing system, moisture film froth fire extinguishing system, GAFES and be used as extinguishing chemical; Especially the fire extinguishing field of clear water fire extinguishing system, spraying system for example, subway, subterranean railway, colliery, grassland, forest, mountain region, factory, office block, residential quarter, hospital, aircraft, ship etc.
Claims (6)
1. new and effective (hydrogen) oxide sol gel extinguishant is by a kind of metal oxide dioxide photocatalyst titanium (TiO
2) collosol and gel, or metal oxide dioxide photocatalyst titanium (TiO
2) collosol and gel and (hydrogen) the oxide sol gel of one or more (hydrogen) oxides that comprise (hydrogen) zinc oxide, (hydrogen) aluminium oxide, (hydrogen) magnesia, (hydrogen) silica or the mixture of powder, (hydrogen) the oxide aqueous extinguishing chemical collosol and gel that adopts dispersion and chemical mode to be prepared into.By claim 1 described a kind of new and effective (hydrogen) oxide sol gel extinguishant, its chemical synthesis utilizes chlorate or sulfate after dilution, and concentration can be 0.1～80.0%, with ammoniacal liquor (NH
3) be adjusted between PH=4.0～9.0 and produce hydroxide, behind washing filtering, hydroxide is scattered in is the hydroxide sol gel in the water, add and comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassium chromate (K
2CrO
4), chloric acid (KClO
3), potassium hyperchlorate (KClO
4), postassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) in interior proper amount of oxidant, and after continuing to heat 1～48 hour with 50～90 ℃ of temperature, can form the metal oxide sol gel solution.
3. by claim 1 described a kind of new and effective (hydrogen) oxide sol gel extinguishant, it is characterized in that its oxide or hydroxide extinguishing chemical aqueous sol, its pH is between 6～11.
4. by claim 1 described a kind of new and effective (hydrogen) oxide sol gel extinguishant, the particle size that it is characterized in that its oxide or hydroxide extinguishing chemical aqueous sol can be between 0.1nm～10,000nm accounts for total particle weight 0.1%～99.9% at the particle of this scope.
5. by claim 1 described a kind of new and effective (hydrogen) oxide sol gel extinguishant, it is characterized in that its oxide or hydroxide extinguishing chemical aqueous sol can be one or more it (hydrogen) oxides with the water-based of any ratio mixings colloidal sol of putting out a fire.
6. by claim 1 described a kind of new and effective (hydrogen) oxide sol gel extinguishant, it is characterized in that its oxide or hydroxide extinguishing chemical aqueous sol, the surfactant that can in system, add the low surface tension that comprises fluorine-containing surfactant, silicon-containing surfactant, non-ionic surface active agent, cationic surfactant, anion surfactant, amphoteric surfactant a bit, surfactant in this extinguishing chemical working concentration between 0～100,000ppm is to obtain better to put out a fire effect.
7. by claim 1 described a kind of new and effective (hydrogen) oxide sol gel extinguishant, it is characterized in that its oxide or hydroxide extinguishing chemical aqueous sol, its oxide or hydroxide extinguishing chemical particulate powder, can be applied directly in the powder extinguishing agent, be used as the extinguishing chemical additive in the fire-fighting system such as clear water fire extinguishing system, water spray fire prevention system, water mist system, moisture film froth fire extinguishing system, working concentration is between 0～500 in this extinguishing chemical, 000ppm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510028548 CN1730128B (en) | 2005-08-05 | 2005-08-05 | Highly effective (hydrated) oxide aqueous sol gel fire-extinguishing agent and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510028548 CN1730128B (en) | 2005-08-05 | 2005-08-05 | Highly effective (hydrated) oxide aqueous sol gel fire-extinguishing agent and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1730128A true CN1730128A (en) | 2006-02-08 |
| CN1730128B CN1730128B (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510028548 Expired - Fee Related CN1730128B (en) | 2005-08-05 | 2005-08-05 | Highly effective (hydrated) oxide aqueous sol gel fire-extinguishing agent and application thereof |
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| Country | Link |
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| CN (1) | CN1730128B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007030982A1 (en) * | 2005-09-15 | 2007-03-22 | Onid Technology (Shanghai) Corporation | Highly active (hydr) oxide aqueous sol-gel fire extinguishing agent and the application thereof |
| CN102133459A (en) * | 2010-11-25 | 2011-07-27 | 西安新竹防灾救生设备有限公司 | Superfine powder extinguishing agent and preparation method thereof |
| CN107441667A (en) * | 2017-07-25 | 2017-12-08 | 吕海党 | A kind of fire-fighting powder |
| CN108721655A (en) * | 2018-08-06 | 2018-11-02 | 马学林 | A kind of preparation method of fire extinguishing disinfectant |
| CN110156057A (en) * | 2019-06-18 | 2019-08-23 | 苏州贝尔德新材料科技有限公司 | The preparation method of high purity aluminium oxide |
| CN114904200A (en) * | 2022-06-07 | 2022-08-16 | 应急管理部四川消防研究所 | Nano metal oxide-based composite hydrosol fire extinguishing agent for forest and grass fire suppression and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103003A (en) * | 1993-11-24 | 1995-05-31 | 魏德华 | Method of extinguishing fire by slurry jet |
| US6099894A (en) * | 1998-07-27 | 2000-08-08 | Frisby Technologies, Inc. | Gel-coated microcapsules |
-
2005
- 2005-08-05 CN CN 200510028548 patent/CN1730128B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007030982A1 (en) * | 2005-09-15 | 2007-03-22 | Onid Technology (Shanghai) Corporation | Highly active (hydr) oxide aqueous sol-gel fire extinguishing agent and the application thereof |
| CN102133459A (en) * | 2010-11-25 | 2011-07-27 | 西安新竹防灾救生设备有限公司 | Superfine powder extinguishing agent and preparation method thereof |
| CN102133459B (en) * | 2010-11-25 | 2016-08-10 | 西安新竹防灾救生设备有限公司 | A kind of ultra-fine dry powder extinguishing agent and preparation method thereof |
| CN107441667A (en) * | 2017-07-25 | 2017-12-08 | 吕海党 | A kind of fire-fighting powder |
| CN108721655A (en) * | 2018-08-06 | 2018-11-02 | 马学林 | A kind of preparation method of fire extinguishing disinfectant |
| CN110156057A (en) * | 2019-06-18 | 2019-08-23 | 苏州贝尔德新材料科技有限公司 | The preparation method of high purity aluminium oxide |
| CN114904200A (en) * | 2022-06-07 | 2022-08-16 | 应急管理部四川消防研究所 | Nano metal oxide-based composite hydrosol fire extinguishing agent for forest and grass fire suppression and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1730128B (en) | 2011-05-25 |
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