CN107626068A - A kind of cold aerosol fire extinguishing agent and preparation method thereof - Google Patents
A kind of cold aerosol fire extinguishing agent and preparation method thereof Download PDFInfo
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- CN107626068A CN107626068A CN201710928648.9A CN201710928648A CN107626068A CN 107626068 A CN107626068 A CN 107626068A CN 201710928648 A CN201710928648 A CN 201710928648A CN 107626068 A CN107626068 A CN 107626068A
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Abstract
The present invention relates to a kind of cold aerosol fire extinguishing agent and preparation method thereof, belongs to fire extinguishing field of material technology.The present invention has both hydrophobic and oleophobic characteristic using carbon fluorine chain, surface of material is handled by fluorine surfactant, good fluidity is made, do not infiltrated by oil product, it can be floated on pasta and voluntarily complete to sprawl, extinguishing property and the anti-preferable powder of resume combustion ability, again after ultra-fine grinding, significantly strengthen surface-active, molecule is set to be easy to dispersed, it is suspended in air and forms metastable aerosol, in a manner of taking three dimensions and flame contact, produce isolation method extinguishing effect, simultaneously, molecule is accelerated in flame by thermal decomposition rate, catch free radical or active group ability improves, the extinguishing mechanism of Chemical Inhibition can preferably be played.
Description
Technical field
The present invention relates to a kind of cold aerosol fire extinguishing agent and preparation method thereof, belongs to fire extinguishing field of material technology.
Background technology
Cold aerosol fire extinguishing agent is accompanied by a kind of new Kazakhstan dragon that cancelling system action in worldwide is arisen at the historic moment
Substituted type extinguishing chemical.Current domestic and international studied solid particulate aerosol extinguishing chemical has two classes, i.e., hot-gas sol fire extinguishing agent and
Cold aerosol fire extinguishing agent.The pyrotechnics class material that hot-gas sol fire extinguishing agent is made up of oxidant, reducing agent and other additives, by
In it be with combustion system formed fire extinguishing aerosol, therefore its generation!Play the main solid-state for suppressing fire combustion reaction and carrying out
Particle size easily reaches less than 1 μm, and in other words, formation is not difficult with the fire extinguishing aerosol for diffusing feature, and this is also
Hot-gas sol fire extinguishing agent quickly enters one of major reason of practicality.Collection Chemical Inhibition, heat absorption when hot-gas sol fire extinguishing agent is put out a fire
Cooling, three kinds of mechanism of oxygen concentration are reduced in one, thus extinguishing effect is very high.Hot-gas sol fire extinguishing agent preparation technology is simple, former
Material is easy to get, production cost is low, corresponding extinguishing device is easy to maintenance, thus is increasingly approved by people.And changed into switchhouse,
Nobody, relative closure, the less place in space such as Generators, cable interlayer, cable shaft, cable duct are applied.It is applicable
Fire and combustible soli-d substance surface in Class C flammable liquids such as diesel oil of putting out a fire to save life and property (except one No. 35 diesel oil), heavy oil, lubricating oil
Fire.Because aerosol can influence visibility, thus it is not preferably used for someone place, should not especially use in public places,
This extinguishing chemical is not suitable for the inerting of explosion hazard area yet.But found in the application of hot-gas sol fire extinguishing agent, due to
It is to produce firing-fighting medium by highly exothermic combustion reaction, therefore triggers following related problem:1. flame outer spray during burning,
Produce the danger of secondary initiation fire；2. equipment surface temperature is too high；3. because it is pyrotechnics class material, heat endurance is poor,
It forms aerosol with combustion system simultaneously, and people's psychology is not easily accepted by；4. because the fire smothering gas collosol temperature of release is higher, no
Beneficial to the cooling in the scene of a fire；5. hot-gas sol fire extinguishing agent is still had any problem to suppressing A classes deepseated fire.These related problems occur, limitation
The application of hot-gas sol fire extinguishing agent.So a kind of aerosol that can produce high-effect fire-extinguishing of exploitation, again without height during fire extinguishing
Temperature reacts the fire-fighting technique of related problem, it has also become the current research direction of aerosol fire-extinguishing technology.Cold aerosol fire extinguishing agent is just
Realize people it is this it is desired on the basis of grow up, it overcome hot gas dissolving extinguishing chemical high temperature negative interaction, again
With efficient extinguishing ability, its appearance causes people's highest attention and interest quickly, and becomes the neck of fire-fighting in recent years
One of the study hotspot in domain.
The content of the invention
The technical problems to be solved by the invention：For traditional extinguishing chemical poor fluidity, hydroscopicity is big, and anti-caking performance is poor
The problem of, there is provided a kind of cold aerosol fire extinguishing agent preparation method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of cold aerosol fire extinguishing agent, it is made up of by weight following components：
90 ~ 100 parts of ammonium dihydrogen phosphates, 10 ~ 20 parts of silica, 1 ~ 3 part of ammonium sulfate, 1 ~ 2 part of grinding aid, 10 ~ 20 parts of surfaces change
Property liquid.
The grinding aid is triethanolamine, trimethylolpropane, pentaerythrite, diisopropanolamine (DIPA), monoisopropanolamine, oleic acid
In one or more.
The surface modification liquid is 1 ~ 2 parts by weight Sodium perfluorooctanoate, 2 ~ 3 parts by weight perfluoro octyl sulfonic acid sodium, 150 ~ 250 weights
Measure part acetone composition.
Concretely comprise the following steps：
S1. control surface modification liquid is matched somebody with somebody by formula ratio；
S2. count in parts by weight, ammonium dihydrogen phosphate, silica, ammonium sulfate, grinding aid are well mixed, obtain compound material；
S3. surface modification liquid is uniformly sprayed at compound surface of material, and 3 ~ 5h of high-speed stirred, then dried extremely at 60 ~ 70 DEG C
Water content≤2%, obtain composite powder；
S4. composite powder is fitted into ball mill, in room temperature, humidity<Under 45%, specific surface area is milled to 400 ~ 450r/min
For 5400 ~ 6000cm2/ g, obtains cold aerosol fire extinguishing agent.
Compared with other method, advantageous effects are the present invention：
The present invention has both hydrophobic and oleophobic characteristic using carbon fluorine chain, by fluorine surfactant to surface of material at
Reason, good fluidity is made, is not infiltrated by oil product, can be floated on pasta and voluntarily complete to sprawl, extinguishing property and anti-resume combustion
The preferable powder of ability, then after ultra-fine grinding, significantly strengthen surface-active, molecule is easy to dispersed, is suspended in
Metastable aerosol is formed in air, in a manner of taking three dimensions and flame contact, produces isolation method extinguishing effect,
Meanwhile molecule is accelerated in flame by thermal decomposition rate, catch free radical or active group ability improves, can be preferably
Play the extinguishing mechanism of Chemical Inhibition.
Embodiment
1 ~ 2g Sodium perfluorooctanoates are taken, 2 ~ 3g perfluoro octyl sulfonic acid sodium, are added in 150 ~ 250g acetone, with 300 ~ 400r/min
20 ~ 30min is stirred, surface modification liquid is obtained, takes 90 ~ 100g ammonium dihydrogen phosphates, 10 ~ 20g silica, 1 ~ 3g ammonium sulfate, 1 ~ 2g
Grinding aid, it is fitted into homogenizer, 20 ~ 30min is stirred with 300 ~ 400r/min, compound material is obtained, 10 ~ 20g surfaces is changed
Property liquid is fitted into sprayer, is uniformly sprayed at compound surface of material, and at normal temperatures with 1200 ~ 1800r/min high-speed stirreds 3 ~
5h, then be transferred in drying box, dried at 60 ~ 70 DEG C to water content≤2%, obtain composite powder, composite powder is loaded into ball mill
In, in room temperature, humidity<Under 45%, specific surface area is milled to as 5400 ~ 6000cm using 400 ~ 450r/min2/ g, obtains cold air sol
Extinguishing chemical.
Example 1
1g Sodium perfluorooctanoates are taken, 2g perfluoro octyl sulfonic acid sodium, are added in 150g acetone, 20min is stirred with 300r/min, obtains surface
Modification liquid, 90g ammonium dihydrogen phosphates are taken, 10g silica, 1g ammonium sulfate, 1g grinding aids, are fitted into homogenizer, with 300r/
Min stirs 20min, obtains compound material, 10g surfaces modification liquid is fitted into sprayer, be uniformly sprayed at compound surface of material, and
At normal temperatures with 1200r/min high-speed stirred 3h, then it is transferred in drying box, dries to water content≤2%, obtain compound at 60 DEG C
Powder, composite powder is fitted into ball mill, in room temperature, humidity<Under 45%, using 400r/min be milled to specific surface area as
5400cm2/ g, obtains cold aerosol fire extinguishing agent.
Example 2
1.5g Sodium perfluorooctanoates are taken, 2.5g perfluoro octyl sulfonic acid sodium, are added in 200g acetone, 25min is stirred with 350r/min, obtained
Surface modification liquids, 95g ammonium dihydrogen phosphates are taken, 15g silica, 2g ammonium sulfate, 1.5g grinding aids, are fitted into homogenizer,
25min is stirred with 350r/min, compound material is obtained, 15g surfaces modification liquid is fitted into sprayer, is uniformly sprayed at compound material
Surface, and at normal temperatures with 1500r/min high-speed stirred 4h, then be transferred in drying box, dried at 65 DEG C to water content≤2%,
Composite powder is obtained, composite powder is fitted into ball mill, in room temperature, humidity<Under 45%, specific surface area is milled to 420r/min
For 5700cm2/ g, obtains cold aerosol fire extinguishing agent.
Example 3
2g Sodium perfluorooctanoates are taken, 3g perfluoro octyl sulfonic acid sodium, are added in 250g acetone, 30min is stirred with 400r/min, obtains surface
Modification liquid, 100g ammonium dihydrogen phosphates are taken, 20g silica, 3g ammonium sulfate, 2g grinding aids, are fitted into homogenizer, with
400r/min stirs 30min, obtains compound material, 20g surfaces modification liquid is fitted into sprayer, is uniformly sprayed at compound material table
Face, and at normal temperatures with 1800r/min high-speed stirred 5h, then be transferred in drying box, dry to water content≤2%, obtain at 70 DEG C
Composite powder, composite powder is fitted into ball mill, in room temperature, humidity<Under 45%, using 450r/min be milled to specific surface area as
6000cm2/ g, obtains cold aerosol fire extinguishing agent.
The extinguishing chemical that a kind of cold aerosol fire extinguishing agent being prepared into and Zibo company produce is detected, specific detection
It is as follows：
（1）Fluidity testing
The rotating speed of motor is adjusted to graduated cylinders of the 250r/min and 150r/min using 25mL and 100mL respectively, wherein added to difference
Enter 59 and 209 medicament, record initial volume, then start to vibrate, often vibrate 100 times and read three individual products and take it average
Value, vibration and record data are then proceeded to, untill Volume Changes very little.Experiment repeats three times.
（2）Hydroscopicity is tested
A takes 3 oneself measuring cups through constant weight, weighs extinguishing chemical sample 59 or so respectively, is accurate to .00002g and then by measuring cup
Exempt from lid and be placed in 21 DEG C ± 30 DEG C of temperature, certain time in the constant-temperature constant-humidity environment of relative humidity 78%.C takes out measuring cup capping and put
In drier, weighed after standing 15min, be accurate to 0.000029gD hydroscopicities X and represented with mass percent (%), as the following formula
Calculate
X=(m1-m0)/m0×100
In formula:m0The quality of extinguishing chemical sample, unit (g) before one moisture absorption
m1The quality of extinguishing chemical sample, unit (g) after one moisture absorption
（3）Anti-caking performance is tested
In drying, clean beaker, cold air sol powder extinguishing agent sample is filled, with doctor blade surface.Beaker is placed in
On vibration screening machine, with clamp, 5min is shaken；Beaker is removed, is under conditions of (21 ± 3) DEG C relative humidity is 78% in temperature
Humidification 24 hours；Temperature is then moved into dry 24h in the Constant Temp. Oven of (48 ± 3) DEG C.When determining needle penetration, needle point
The nearly specimen surface of drug paste, between penetration!The distance between penetration and wall of cup are freely fallen into 55 in sample not less than 10mm. pins
Afterwards, the depth (in terms of mm) of recording needle insertion sample, specific test result such as table 1.
The cold aerosol fire extinguishing agent performance characterization of table 1
As shown in Table 1, a kind of cold aerosol fire extinguishing agent is made in the present invention, and mobile performance improves, and hydroscopicity reduces, anti-caking performance
It is excellent, there is good development prospect.
Claims (4)
1. a kind of cold aerosol fire extinguishing agent, it is characterised in that be made up of by weight following components：
90 ~ 100 parts of ammonium dihydrogen phosphates, 10 ~ 20 parts of silica, 1 ~ 3 part of ammonium sulfate, 1 ~ 2 part of grinding aid, 10 ~ 20 parts of surfaces change
Property liquid.
2. a kind of cold aerosol fire extinguishing agent as claimed in claim 1, it is characterised in that the grinding aid is triethanolamine, three
One or more in hydroxymethyl-propane, pentaerythrite, diisopropanolamine (DIPA), monoisopropanolamine, oleic acid.
3. a kind of cold aerosol fire extinguishing agent as claimed in claim 1, it is characterised in that the surface modification liquid is 1 ~ 2 weight
Part Sodium perfluorooctanoate, 2 ~ 3 parts by weight perfluoro octyl sulfonic acid sodium, 150 ~ 250 pbw acetones composition.
4. the preparation method of a kind of cold aerosol fire extinguishing agent as described in claim 1 ~ 3 any one, it is characterised in that specific
Step is：
S1. control surface modification liquid is matched somebody with somebody by formula ratio；
S2. count in parts by weight, ammonium dihydrogen phosphate, silica, ammonium sulfate, grinding aid are well mixed, obtain compound material；
S3. surface modification liquid is uniformly sprayed at compound surface of material, and 3 ~ 5h of high-speed stirred, then dried extremely at 60 ~ 70 DEG C
Water content≤2%, obtain composite powder；
S4. composite powder is fitted into ball mill, in room temperature, humidity<Under 45%, specific surface area is milled to 400 ~ 450r/min
For 5400 ~ 6000cm2/ g, obtains cold aerosol fire extinguishing agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710928648.9A CN107626068A (en) | 2017-10-09 | 2017-10-09 | A kind of cold aerosol fire extinguishing agent and preparation method thereof |
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| CN201710928648.9A CN107626068A (en) | 2017-10-09 | 2017-10-09 | A kind of cold aerosol fire extinguishing agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492632A (en) * | 2023-05-11 | 2023-07-28 | 北京菲思拓新材料股份有限公司 | Aerosol fire extinguishing agent |
Citations (5)
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| GB1208261A (en) * | 1966-07-30 | 1970-10-14 | Nu Swift Internat Ltd | Improvements in or relating to fire extinguishing agents |
| US3553127A (en) * | 1969-02-06 | 1971-01-05 | Ansul Co | Anti-reflash dry chemical agent |
| US3644513A (en) * | 1969-04-23 | 1972-02-22 | Allied Chem | Polyfluoroisoalkoxyalkyl amido carboxylic acids and salts thereof |
| CN102872571A (en) * | 2012-10-11 | 2013-01-16 | 晋中旭正消防器材有限公司 | Composite multi-salt superfine dry powder extinguishing agent and method for manufacturing same |
| CN104096335A (en) * | 2014-06-24 | 2014-10-15 | 江西进贤消防化工实业有限公司 | ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof |
-
2017
- 2017-10-09 CN CN201710928648.9A patent/CN107626068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1208261A (en) * | 1966-07-30 | 1970-10-14 | Nu Swift Internat Ltd | Improvements in or relating to fire extinguishing agents |
| US3553127A (en) * | 1969-02-06 | 1971-01-05 | Ansul Co | Anti-reflash dry chemical agent |
| US3644513A (en) * | 1969-04-23 | 1972-02-22 | Allied Chem | Polyfluoroisoalkoxyalkyl amido carboxylic acids and salts thereof |
| CN102872571A (en) * | 2012-10-11 | 2013-01-16 | 晋中旭正消防器材有限公司 | Composite multi-salt superfine dry powder extinguishing agent and method for manufacturing same |
| CN104096335A (en) * | 2014-06-24 | 2014-10-15 | 江西进贤消防化工实业有限公司 | ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵春霞: "抗复燃超细磷酸铵盐干粉灭火剂的合成研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492632A (en) * | 2023-05-11 | 2023-07-28 | 北京菲思拓新材料股份有限公司 | Aerosol fire extinguishing agent |
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Application publication date: 20180126 |