CN100391560C - Anti-refiring ultrafine ammonium phosphate dry chemical fire-extinguishing agent and its preparation method - Google Patents
Anti-refiring ultrafine ammonium phosphate dry chemical fire-extinguishing agent and its preparation method Download PDFInfo
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- CN100391560C CN100391560C CNB2004100406967A CN200410040696A CN100391560C CN 100391560 C CN100391560 C CN 100391560C CN B2004100406967 A CNB2004100406967 A CN B2004100406967A CN 200410040696 A CN200410040696 A CN 200410040696A CN 100391560 C CN100391560 C CN 100391560C
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Abstract
The present invention relates to a superfine ammonium phosphate dry powder fire-extinguishing agent for preventing reignition, which is prepared by successively coating the surface of base material of superfine ammonium phosphate dry powder with a silicon oil film and a perfluorocarbon film. The base material of superfine ammonium phosphate dry powder is composed of components of the following proportion: 50 to 90 shares of ammonium phosphate, 2 to 20 shares of ammonium sulfate, 2 to 10 shares of talcum powder, 1 to 5 shares of mica powder, 1 to 10 shares of white carbon black and 1 to 10 shares of calcium carbonate, wherein the average particle size of the ammonium phosphate and the ammonium sulfate is smaller or equal to 5 micrometres. The process flow of the preparation method comprises: proportioning, comminution by gas stream and mixing; coating the base material with the silicon oil film; coating the base material with the perfluorocarbon film. Fluorocarbon surfactant is C8F17SO2NH(CH2)3N<+>(CH3)2I<-> or C8F17SO2NH(CH2)3N(CH3)2O. The superfine ammonium phosphate dry powder fire-extinguishing agent for preventing reignition of the present invention has both lipophobicity and hydrophobicity, and can extinguish fire of A class, B class and C class. The present invention is particularly suitable for extinguishing oil fire, and the extinguishing efficiency of the present invention relates to 5 times of an ammonium phosphate dry powder fire-extinguishing agent of a common type.
Description
Technical field
The invention belongs to phosphorus ammonium powder extinguishing agent field, particularly anti-reignition superfine dry ammonium phosphate salt powder extinguishing agent and its preparation method.
Background technology
The powder extinguishing agent that with the ammonium phosphate salt is the main body preparation is environmentally friendly, the fire extinguishing wide ranges, and fire extinguishing speed is fast, and the fire extinguishing effectiveness height is one of best substitute of Halon extinguishing chemical.It is big that ammonium phosphate salt is carried out the powder extinguishing agent specific area for preparing after the ultra micro refinement, and surface-active height, fire extinguishing effectiveness are higher than plain edition far away, are the directions of domestic and international phosphorus ammonium powder extinguishing agent development.
People such as Zhang Wei once adopted aqueous phase synthesis method to prepare the ultra micro ammonium phosphate powder extinguishing agent (to see " preparation of ultra micro ammonium phosphate powder extinguishing agent ", Zhang Wei, Xiao Chunhong, Jing Xiaoyan, Xu Hongbin, Zhang Milin, " fire science and technology ", the 4th phase of July calendar year 2001, P39-40), but this method needs secondary to pulverize, and the ultra micro fineness of its particle can not guarantee; Problems such as the while is bad in the surface treatment of its ultramicron of aqueous phase, has easy moisture absorption caking, and is mobile poor, and jet performance is bad; And this method flow process complexity, drying, the cost height of pulverizing are difficult to industrialization.
People such as Tang Congming, Xu Kaqiu (sees " fine chemistry industry " the 21st the 5th phase of volume in " ultra-fine ammonium phosphate powder extinguishing agent research ", in May, 2004, P398-400) disclose the method that a kind of solid-phase synthesis prepares ultra-fine ammonium phosphate powder extinguishing agent in, this method is with ammonium dihydrogen phosphate (ADP) (NH
4H
2PO
4), ammonium sulfate ((NH
4)
2SO
4), talcum powder, silicone oil be raw material, technological process is: with ammonium dihydrogen phosphate (ADP) (NH
4H
2PO
4) and ammonium sulfate ((NH
4)
2SO
4) mix, adopt the supersonic airstream disintegrating apparatus that the said mixture material is carried out the pulverizing of ultra-fineization of dry method, then, the mixed material that taking-up is pulverized by ultra-fineization adds flow improver additive and under agitation drips silicone oil, be warming up to silicone oil polymerization film formation temperature, make silicone oil at the surface-crosslinked polymerization film formation of dry powder particle, stop reaction behind the constant temperature stirring reaction 40min, make ultra-fine ammonium phosphate powder extinguishing agent.Though this method technological process is simple; be easy to industrialization; but have the following disadvantages: 1, powder extinguishing agent can have good protection against the tide, antiseptic property after silicidation; but when putting out oil fire; in case the dry powder particle spraying is to pasta; because the hydrophobic membrane of particle surface has very strong lipophile; the dry powder particle sinks in the oil very soon; can not form protective effect to pasta; again because the cooling effect of powder extinguishing agent is very little; the local remaining little flare whole pasta that can ignite again, thereby in putting out oil fire, exist " resume combustion " problem.2, because surperficial silicone oil coating temperature is low, the reaction time is short, is unfavorable for the abundant volatilization of moisture in the powder, influences repellency, flowability, storage characteristics and the ejection of product.3, ammonium dihydrogen phosphate (ADP) (NH
4H
2PO
4) ultra-fine grain diameter be following limiting values that can reach of these process conditions, can not make powder granularity thinner by mechanical crushing merely, it is impossible to adopt this method further to reduce powder size.
The Tianjin fire-fighting Wu of scientific research institution of the Ministry of Public Security nourishes human relations and (sees " fire prevention and product information " in " dry-chemical fire extinguishing agent prescription General Principle ", 2000 (2) P23-24) the anti-resume combustion approach in the dry-chemical fire extinguishing process and the preparation of anti-resume combustion dry powder have been introduced in the literary composition, one of its approach is to be to add in the powder fluorine carbide, make dry powder have the oiliness of scolding, but the concrete fluorocarbon surfactant preparing process complexity of using in the disclosed dry powder processing procedure, and preparation technology is that the powder surface coats fluorine carbon thing film earlier, and then the coating silicon oil membrane, it is relatively poor to handle its anti-resume combustion of powder extinguishing agent that is obtained like this.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of anti-reignition superfine dry ammonium phosphate salt powder extinguishing agent and its preparation method is provided, it is little that prepared ammonium phosphate powder extinguishing agent has granularity, specific area is big, fire extinguishing effectiveness height, and not only hydrophobic but also oleophobic, be difficult for moisture absorption caking, good fluidity, can evenly disperse to fly at catch fire space and pasta, secluding air stops the performance of oil product resume combustion.
The ultra-fine ammonium phosphate powder extinguishing agent of anti-resume combustion of the present invention is to coat silicon oil membrane successively on ultra-fine ammonium phosphate dry-powder base-material surface and fluorine carbon thing film forms, its particle mean size≤10 μ m.The prescription of ammonium phosphate dry-powder base-material has following component, each component by weight, filling a prescription is:
2～20 parts in 50～90 parts of ammonium sulfate of ammonium phosphate salt
1～5 part of 2～10 parts of mica powder of talcum powder
1～10 part in white 1～10 part of calcium carbonate of carbon black
In the said components, the particle mean size of ammonium phosphate salt, ammonium sulfate≤5 μ m, ammonium phosphate salt can be ammonium dihydrogen phosphate (ADP) (NH
4H
2PO
4) or diammonium hydrogen phosphate ((NH
4)
2HPO
4) or triammonium phosphate ((NH
4)
3PO
4) or ammonium pyrophosphate or APP.
The technological process for preparing the ultra-fine ammonium phosphate powder extinguishing agent of above-mentioned anti-resume combustion is as follows:
1, batching, air-flow are pulverized and are mixed
Ammonium phosphate salt and ammonium sulfate by above-mentioned prescription batching and at room temperature adopt the mode of supersonic airstream dry pulverization process to be ground into the ultra-fine dry powder of particle mean size≤5 μ m after mixing, are equipped with other base-materials by the prescription of above-mentioned ammonium phosphate dry-powder base-material again and mix;
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
0.5～2 part of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 100～150 ℃ of reactions 1～3 hour, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane.
3, coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-materials of silicon oil membrane
0.05～0.2 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N
+(CH
3)
2I
-Or C
8F
17SO
2NH (CH
2)
3N (CH
3)
2O, each component is by weight;
Add fluorocarbon surfactant in the ultra-fine ammonium phosphate dry-powder base-material that is coated with silicon oil membrane and fully mixing, stir and be warming up to 50～150 ℃ of reactions 1～3 hour, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging.
In order to break the pulverizing balance, balance is moved to more refinement direction, further reduce the particle diameter of ammonium phosphate salt and ammonium sulfate powder, in the air-flow crushing process of ammonium phosphate salt and ammonium sulfate, added grinding aid sodium carbonate or sodium chloride or sodium acid carbonate.Grinding aid adds by following weight ratio:
Ammonium phosphate salt and ammonium sulfate: grinding aid=100: (0.5～2)
For the ammonium phosphate powder extinguishing agent of common granularity and other BC powder extinguishing agent, also can adopt the method for the invention to coat silicon oil membrane and fluorine carbon thing film, make its not only hydrophobic but also oleophobic.
The present invention has following beneficial effect:
1, not only hydrophobic but also oleophobic of the ultra-fine ammonium phosphate powder extinguishing agent of anti-resume combustion of the present invention, can put out a fire to save life and property A, B, C class fire are particularly useful for the oil fire of putting out a fire to save life and property; Powder size is ultra-fine, and specific area is big, and fire extinguishing effectiveness height, its fire extinguishing effectiveness are about 5 times of plain edition ammonium phosphate powder extinguishing agent; Performance indications such as its repellency, moisture content, hydroscopicity, flowability, anticaking capacity have all surpassed standard GB 15060-1994, the GB15060-2002 of ammonium phosphate powder extinguishing agent, and major technique, performance indications are as follows:
Ammonium phosphate salt 50～90%
Average grain diameter≤10 μ m
Hydrophobic rate 95～99%
Oleophobic rate 95～99%
Anticaking capacity (representing) 〉=30mm with needle penetration,
Hydroscopicity≤2%
Moisture content≤0.20
Repellency does not absorb water, and does not lump
Mobile 6.2s
Ejection 〉=95%
Electrical insulating property 〉=5.00kv
2, raw material is easy to get, and preparation technology is simple, and is pollution-free, is convenient to suitability for industrialized production.
3, improve the coating temperature and prolonged the coating reaction time in the coating silicon oil membrane process, thereby improved repellency, flowability, storage characteristics, ejection, antivibration reality and the anticaking capacity of ultra-fine ammonium phosphate powder extinguishing agent.
4, in the air-flow crushing process of ammonium phosphate salt and ammonium sulfate, add grinding aid, further reduced the particle diameter of ammonium phosphate salt and ammonium sulfate powder.
5, grinding aid is inorganic salts sodium carbonate or sodium chloride or sodium acid carbonate, and is not only inexpensive, and has fire extinguishing effectiveness.
The specific embodiment
Embodiment one
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
17 parts in 50 parts of ammonium sulfate of ammonium dihydrogen phosphate (ADP)
5 parts of 10 parts of mica powders of talcum powder
10 parts in white 8 parts of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after ammonium dihydrogen phosphate (ADP) in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add grinding aid sodium carbonate when air-flow is pulverized, sodium carbonate adds by following weight ratio:
Ammonium dihydrogen phosphate (ADP) and ammonium sulfate: sodium carbonate=100: 0.5
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
0.5 part of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 100 ℃ of reactions 3 hours, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-material particulates of silicon oil membrane
0.05 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N
+(CH
3)
2I
-, each component by weight;
Add fluorocarbon surfactant in the ultra-fine ammonium phosphate dry-powder base-material that is coated with silicon oil membrane and fully mixing,, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging 50 ℃ of reactions 3 hours.
Embodiment two
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
10 parts in 75 parts of ammonium sulfate of ammonium dihydrogen phosphate (ADP)
3 parts of 4 parts of mica powders of talcum powder
5 parts in white 3 parts of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after ammonium dihydrogen phosphate (ADP) in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add grinding aid sodium chloride when air-flow is pulverized, sodium chloride adds by following weight ratio:
Ammonium dihydrogen phosphate (ADP) and ammonium sulfate: sodium chloride=100: 1
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
1 part of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 120 ℃ of reactions 2 hours, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat the fluorine carbide membrane
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-materials of silicon oil membrane
0.1 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N (CH
3)
2O, each component is by weight;
Add fluorocarbon surfactant in the ultra-fine ammonium phosphate dry-powder base-material that is coated with silicon oil membrane and fully mixing, stir and be warming up to 100 ℃ of reactions 2 hours, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging.
Embodiment three
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
5 parts in 90 parts of ammonium sulfate of ammonium dihydrogen phosphate (ADP)
1 part of 2 parts of mica powder of talcum powder
1 part in white 1 part of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after ammonium dihydrogen phosphate (ADP) in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add the grinding aid sodium acid carbonate when air-flow is pulverized, sodium acid carbonate adds by following weight ratio:
Ammonium dihydrogen phosphate (ADP) and ammonium sulfate: sodium acid carbonate=100: 2
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
2 parts of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 150 ℃ of reactions 1 hour, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine phosphorus ammonium salt dry powder base-materials of silicon oil membrane
0.2 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N (CH
3)
2O, each component is by weight;
Add fluorocarbon surfactant in the ultra-fine phosphorus ammonium salt dry powder base-material that is coated with silicon oil membrane and fully mixing, stir and be warming up to 150 ℃ of reactions 1 hour, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging.
Embodiment four
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
8 parts in 75 parts of ammonium sulfate of diammonium hydrogen phosphate
3 parts of 6 parts of mica powders of talcum powder
5 parts in white 3 parts of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after diammonium hydrogen phosphate in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add grinding aid sodium chloride when air-flow is pulverized, sodium chloride adds by following weight ratio:
Diammonium hydrogen phosphate and ammonium sulfate: sodium chloride=100: 1.2
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
1.2 parts of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 130 ℃ of reactions 1.5 hours, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat the fluorine carbide membrane
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-materials of silicon oil membrane
0.15 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N
+(CH
3)
2I
-, each component by weight; Add fluorocarbon surfactant in the ultra-fine ammonium phosphate dry-powder base-material that is coated with silicon oil membrane and fully mixing, stir and be warming up to 100 ℃ of reactions 1.5 hours, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging.
Embodiment five
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
2 parts in 90 parts of ammonium sulfate of triammonium phosphate
1 part of 3 parts of mica powder of talcum powder
2 parts in white 2 parts of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after triammonium phosphate in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add the grinding aid sodium acid carbonate when air-flow is pulverized, sodium acid carbonate adds by following weight ratio:
Triammonium phosphate and ammonium sulfate: sodium acid carbonate=100: 1.5
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
1.8 parts of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 140 ℃ of reactions 1 hour, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine phosphorus ammonium salt dry powder base-materials of silicon oil membrane
0.18 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N (CH
3)
2O, each component is by weight; Add fluorocarbon surfactant in the ultra-fine phosphorus ammonium salt dry powder base-material that is coated with silicon oil membrane and fully mixing, stir and be warming up to 120 ℃ of reactions 2 hours, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging.
Embodiment six
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
12 parts in 75 parts of ammonium sulfate of ammonium pyrophosphate
2 parts of 5 parts of mica powders of talcum powder
4 parts in white 2 parts of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after ammonium pyrophosphate in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add grinding aid sodium carbonate when air-flow is pulverized, sodium carbonate adds by following weight ratio:
Ammonium pyrophosphate and ammonium sulfate: sodium carbonate=100: 1
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
1.5 parts of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 110 ℃ of reactions 2.5 hours, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-material particulates of silicon oil membrane
0.12 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N
+(CH
3)
2I
-, each component by weight;
Add fluorocarbon surfactant in the ultra-fine ammonium phosphate dry-powder base-material that is coated with silicon oil membrane and fully mixing,, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging 110 ℃ of reactions 2.5 hours.
Embodiment seven
1, batching, air-flow are pulverized and are mixed
The ammonium phosphate dry-powder base-material has following component, each component by weight:
20 parts in 50 parts of ammonium sulfate of APP
3 parts of 8 parts of mica powders of talcum powder
9 parts in white 10 parts of calcium carbonate of carbon black
The mode that at room temperature adopts the supersonic airstream dry pulverization process after APP in the above-mentioned dry powder base-material and the ammonium sulfate mixing is ground into the ultra-fine dry powder of particle mean size≤5 μ m, mix with other base-materials again and make ultra-fine ammonium phosphate dry-powder base-material, add the grinding aid sodium acid carbonate when air-flow is pulverized, sodium acid carbonate adds by following weight ratio:
APP and ammonium sulfate: sodium acid carbonate=100: 0.8
2, coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
0.8 part of silicone oil
Each component by weight;
Under agitation silicone oil is added in the ultra-fine ammonium phosphate dry-powder base-material, mix, be warming up to 100 ℃ of reactions 3 hours, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane;
3, coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine phosphorus ammonium salt dry powder base-materials of silicon oil membrane
0.08 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N (CH
3)
2O, each component is by weight;
Add fluorocarbon surfactant in the ultra-fine phosphorus ammonium salt dry powder base-material that is coated with silicon oil membrane and fully mixing, stir and be warming up to 90 ℃ of reactions 2 hours, can obtain the ultra-fine phosphorus ammonium of anti-resume combustion powder extinguishing agent, cool the temperature to the room temperature discharging.
Claims (5)
1. ultra-fine ammonium phosphate powder extinguishing agent of anti-resume combustion, it is characterized in that this kind powder extinguishing agent is to coat silicon oil membrane successively on ultra-fine ammonium phosphate dry-powder base-material surface and fluorine carbon thing film forms, the prescription of ultra-fine ammonium phosphate dry-powder base-material has following component, each component by weight, filling a prescription is:
2～20 parts in 50～90 parts of ammonium sulfate of ammonium phosphate salt
1～5 part of 2～10 parts of mica powder of talcum powder
1～10 part in white 1～10 part of calcium carbonate of carbon black
The proportioning of ultra-fine ammonium phosphate dry-powder base-material and silicone oil is:
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes, 0.5～2 part of silicone oil, each component by weight,
Being coated with the ultra-fine ammonium phosphate dry-powder base-material of silicon oil membrane and the proportioning of fluorocarbon surfactant is:
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-materials of silicon oil membrane, 0.05～0.2 part of fluorocarbon surfactant, each component is by weight.
2. the ultra-fine ammonium phosphate powder extinguishing agent of anti-resume combustion according to claim 1 is characterized in that the ammonium phosphate salt in the ammonium phosphate dry-powder base material formulation, the particle mean size≤5 μ m of ammonium sulfate, the particle mean size of powder extinguishing agent≤10 μ m.
3. the ultra-fine ammonium phosphate powder extinguishing agent of anti-resume combustion according to claim 1 and 2 is characterized in that ammonium phosphate salt is ammonium dihydrogen phosphate (ADP) or diammonium hydrogen phosphate or triammonium phosphate or ammonium pyrophosphate or APP.
4. the preparation method of claim 1 or the ultra-fine ammonium phosphate powder extinguishing agent of 2 or 3 described anti-resume combustion is characterized in that technological process is:
(1) batching, air-flow are pulverized and are mixed
With ammonium phosphate salt and ammonium sulfate by the described prescription batching of claim 1 and at room temperature adopt the mode of supersonic airstream dry pulverization process to be ground into the ultra-fine dry powder of particle mean size≤5 μ m after mixing, be equipped with other base-material by the described prescription of claim 1 again and mix
(2) coat silicon oil membrane
100 parts of the ultra-fine ammonium phosphate dry-powder base-materials that mixes
0.5～2 part of silicone oil
Each component by weight,
Under agitation silicone oil is added in the ammonium phosphate dry-powder base-material, mixes, be warming up to 100～150 ℃ of reactions 1～3 hour, obtain the ultra-fine ammonium phosphate dry-powder base-material that the surface is coated with silicon oil membrane,
(3) coat fluorine carbon thing film
Be coated with 100 parts of the ultra-fine ammonium phosphate dry-powder base-materials of silicon oil membrane
0.05～0.2 part of fluorocarbon surfactant
Fluorocarbon surfactant is C
8F
17SO
2NH (CH
2)
3N
+(CH
3)
2I
-Or C
8F
17SO
2NH (CH
2)
3N (CH
3)
2O, each component by weight,
The fluorocarbon surfactant adding is coated with in the ultra-fine ammonium phosphate dry-powder base-material of silicon oil membrane, fully mix, stirring is warming up to 50～150 ℃ of reactions 1～3 hour, can obtain the ultra-fine ammonium phosphate powder extinguishing agent of the described anti-resume combustion of claim 1, cools the temperature to the room temperature discharging.
5. the preparation method of the ultra-fine ammonium phosphate powder extinguishing agent of anti-resume combustion according to claim 4, it is characterized in that adding grinding aid sodium carbonate or sodium chloride or sodium acid carbonate in the air-flow crushing process of ammonium phosphate salt and ammonium sulfate, grinding aid adds by following weight ratio:
Ammonium phosphate salt and ammonium sulfate: grinding aid=100: 0.5～2.
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| CN110193162A (en) * | 2019-07-05 | 2019-09-03 | 佛山市华昊化工有限公司 | Ultra-fine ABC powder extinguishing agent and its production method |
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