CN103897122A - Method for preparing super absorbent polymer (potassium chloride) fire extinguishing agent - Google Patents
Method for preparing super absorbent polymer (potassium chloride) fire extinguishing agent Download PDFInfo
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- CN103897122A CN103897122A CN201210582989.2A CN201210582989A CN103897122A CN 103897122 A CN103897122 A CN 103897122A CN 201210582989 A CN201210582989 A CN 201210582989A CN 103897122 A CN103897122 A CN 103897122A
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Abstract
The invention provides a method for preparing a super absorbent polymer (potassium chloride) fire extinguishing agent. The method comprises the following five steps: preparation of a NaOH water solution, neutral reaction, graft copolymerization, solidification and drying, and crushing. Thus, the technological process is shortened, the production time is shortened, and the production cost is reduced, so as to solve the technical problems of long production cycle and high cost. Meanwhile, the fire-resistant strength of the fire extinguishing agent is increased, no three wastes (scrap, exhaust gas and wastewater) are generated in the production process, and the method is free of pollution to environment, safe and environment-friendly, and stable in product quality.
Description
Technical field
The present invention relates to the preparation method of a kind of hydroscopic high-molecular resin (Repone K) fire-fighting medium, belong to specifically the production technique of hydroscopic high-molecular resin (SAP).
Background technology
Super absorbent resin is as a kind of macromolecular material developing history of existing more than 30 year that has specific function, because the three-dimensional space network structure of this material uniqueness firmly holds onto moisture, there is the characteristic of high multiple water suction, extremely strong water retention property, good biodegradability, many fields in productive life are widely used, particularly under hot conditions, still there is good water retention property, make it have sizable thermal capacitance, and can serve as medicament carrier, isolated flare effectively, prevent spreading and resume combustion of fire, to aspect fire extinguishing, play an important role.Be accompanied by the raising of being familiar with people of updating of its premium properties, super absorbent resin is being faced with good opportunity to develop.
Fire is the frequent large disaster occurring of society, often causes the massive losses of life and property, how to stamp out a fire up hill and dale rapidly, saves as far as possible life and reduce financial loss, has become the thing that the common people and government pay special attention to.Current to the particularly fire extinguishing to the large-scale scene of a fire of the control of fire, conventionally adopt hydraulic giant to carry out the method for high-voltage high-speed injection water.Take on intensity of a fire extreme temperatures when violent, water will evaporate immediately to the portion of catching fire, and the cooling effect of water cannot be given full play to, and easy resume combustion, to remedy difficulty large, and difficulty or ease efficiently complete the important task stamping out a fire.Super absorbent resin is the functional polymer that contains polar group in molecule and have certain degree of crosslinking, has extremely strong water-absorbent, water-retentivity and biological degradability, is a kind of novel quick extinguishing agent.It has that fire extinguishing is fast, usefulness is high, stable performance, anti-resume combustion ability are strong and the feature such as environmental protection, therefore aspect fire-fighting fire extinguishing, is with a wide range of applications.
A kind of hydroscopic high-molecular resin Repone K of this object of invention fire-fighting medium, to be formed by the mutual winding physical crosslinking of chemically crosslinked and polymer molecule interchain, can form gel product with the water absorbing, its unique three-dimensional space network structure, water molecules is firmly held onto, particularly under the condition of high temperature, still there is good water retention property, make it have sizable hot melt.Quick extinguishing agent is put into water, in several minutes, become three dimensional gel liquid, because it has hundreds of times of above quick water-retaining capacities, particularly heat water retention property strong, heat-resisting, high temperature resistant, it is sprayed in fire, be stabilized in for a long time under the high temperature of 350-450 degree, do not affect the performance of its performance, can dehydration consume a large amount of heat, because of its film forming on object, completely cut off air again, reach fast the object of fire extinguishing.In addition it is sprayed to still unburned body surface and can completely cuts off flare, prevent spreading of fire, also can reach the object of fire extinguishing.The particularly fire of forest, building construction, by aircraft or other sprinker for fire-fighting medium hydrogel liquid, be sprinkled upon still on unburned trees, building surface, hydrogel is distributed the surface that is adsorbed on trees, leaf, roof, Fang Bi etc., form containing moisture film, effectively prevent spreading of fire, and spray continuously diffusion on fire surface, because of water retention capacity strong, extinguishing ability is large, flame is covered by fire-fighting medium hydrogel liquid, and isolated air, brings into play larger fire extinguishing fire resistance property
,under Repone K fire-fighting medium normal temperature, normal pressure, it is gel liquid, specific heat capacity is high, evaporation for heat greatly, do not burn, reserves large (can absorb more than hundreds of times moisture in several minutes), the advantages such as blow-off velocity is fast, cheap and easy to use are the high-tech products of the fire extinguishing disaster relief.
summary of the invention
The deficiency existing for prior art, technical problem to be solved by this invention is,
(1) provide the preparation method of a kind of hydroscopic high-molecular resin (Repone K) fire-fighting medium, shortened process, reduces the production time, reduce production costs, and constant product quality.
(2) solved after super absorbent resin mixes with water and become crystal gel, after SAP fire-fighting medium mixes with water, in several minutes, become rapidly three dimensional gel liquid, be conducive to convenient artificial, mechanical firefighting.
(3) strengthened extinguishing property, the fusing point 770 of Repone K is spent, and sublimation point 1500 is spent nonflammable, Repone K gel liquid, and nontoxic, thermotolerance is extremely strong, and stability is strong, can improve greatly fire-fighting efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is that the preparation method of a kind of hydroscopic high-molecular resin (Repone K) fire-fighting medium, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 20 minutes; Then cool to 60-70 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 600g of adding Repone K, 500g urea stir, rotating speed is that 110-120 turns, add again 8g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-115 ℃, and the reaction times is 15-20 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.Water absorbent rate 700g/g
The preparation method of above-mentioned hydroscopic high-molecular resin, the vinylformic acid using: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃.
The preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute; Then cool to 32-37 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 610g of adding Repone K, 550g urea stir, rotating speed is that 90-110 turns, add again 9g ethylene glycol linking agent, then add 5g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-110 ℃, and the reaction times is 10-15 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 15-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.Water absorbent rate 800g/g
The preparation method of above-mentioned hydroscopic high-molecular resin, the vinylformic acid using: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃.
A kind of preparation method of hydroscopic high-molecular resin (Repone K) fire-fighting medium,
tool has the following advantages and beneficial effect:
1, on production technology process, once aggregate into product, dry without baking, the process of polymerization exotherm is exactly dry process, without processes such as washing, saponification, make the technological process of production shorten more than 5 times, can in 1 hour, produce finished product, reduce production costs, thereby solved the technical barrier that the production cycle is long, cost is high.Meanwhile, in production process, produce environmentally safe, safety and environmental protection without the three wastes (waste material, waste gas, waste water).
2, constant product quality, has strengthened extinguishing property, and Repone K is nonflammable, and Repone K gel liquid is not soluble below 800 degree, and stability is strong, and thermotolerance is extremely strong.Repone K fire-fighting medium is to be made up of the mutual winding physical crosslinking of chemically crosslinked and polymer molecule interchain, can form gel product with the water absorbing, its unique three-dimensional space network structure, water molecules is firmly held onto, particularly under the condition of high temperature, still there is good water retention property, make it have sizable hot melt.Quick extinguishing agent is put into water, in several minutes, become three dimensional gel liquid, because it has hundreds of times of above quick water-retaining capacities, water absorbent rate is high, particularly heat water retention property strong, heat-resisting, resistance to high temperature, sprays into it in fire, be stabilized in for a long time under the high temperature of 350-450 degree, do not affect the performance of its performance, can dehydration consume a large amount of heat, again because of its film forming on object, completely cut off air, reach fast the object of fire extinguishing.
Embodiment
embodiment 1
The preparation method of the hydroscopic high-molecular resin of the present embodiment, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute; Then cool to 32-37 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 670g of adding Repone K, 570g urea stir, rotating speed is that 90-110 turns, add again 9g ethylene glycol linking agent, then add 5g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-110 ℃, and the reaction times is 10-15 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 15-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.Water absorbent rate 810g/g
embodiment 2
The preparation method of the hydroscopic high-molecular resin of the present embodiment, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute; Then cool to 32-37 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 680g of adding Repone K, 600g urea stir, rotating speed is that 90-110 turns, add again 9g ethylene glycol linking agent, then add 5g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-110 ℃, and the reaction times is 10-15 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 15-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.Water absorbent rate 780g/g
embodiment 3
The preparation method of the hydroscopic high-molecular resin of the present embodiment, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute; Then cool to 32-37 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 650g of adding Repone K, 530g urea stir, rotating speed is that 90-110 turns, add again 9g ethylene glycol linking agent, then add 5g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-110 ℃, and the reaction times is 10-15 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 15-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.Water absorbent rate 820g/g
embodiment 4
The preparation method of a kind of hydroscopic high-molecular resin of the present embodiment, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute; Then cool to 32-37 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 600g of adding Repone K, 555g urea stir, rotating speed is that 90-110 turns, add again 9g ethylene glycol linking agent, then add 5g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-110 ℃, and the reaction times is 10-15 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 15-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.Water absorbent rate 850g/g
The above, be only preferred embodiment of the present invention, is not the restriction of the present invention being made to other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. the preparation method of a hydroscopic high-molecular resin (Repone K) fire-fighting medium
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 20 minutes; Then cool to 60-70 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 600g of adding Repone K, 500g urea stir, rotating speed is that 110-120 turns, add again 8g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-115 ℃, and the reaction times is 15-20 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
2. water absorbent rate 700g/g
The preparation method of above-mentioned hydroscopic high-molecular resin, the vinylformic acid using: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃.
3. the preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content:
(1) the preparation NaOH aqueous solution: the NaOH 360g that is 93% by concentration, is dissolved in 620g water;
(2) neutralization reaction: the NaOH aqueous solution preparing is joined to 1500g purity continuously and be greater than in 99.5% vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute; Then cool to 32-37 ℃;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 610g of adding Repone K, 550g urea stir, rotating speed is that 90-110 turns, add again 9g ethylene glycol linking agent, then add 5g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in reaction process is controlled at 100 ℃-110 ℃, and the reaction times is 10-15 minute;
(4) solidify dry: reaction mixture is diverted in polymerization digestor; React mixed solution after 15-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
4. water absorbent rate 800g/g
The preparation method of above-mentioned hydroscopic high-molecular resin, the vinylformic acid using: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃.
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| CN109568869A (en) * | 2018-08-16 | 2019-04-05 | 浙江蓝盾电工新材料科技有限公司 | A kind of insulated type flame-retarding fire-extinguishing material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205276A (en) * | 2006-12-18 | 2008-06-25 | 苏州国盾投资管理有限公司 | Low-cost nutrition type water keeping agent and preparation method thereof |
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| CN101205276A (en) * | 2006-12-18 | 2008-06-25 | 苏州国盾投资管理有限公司 | Low-cost nutrition type water keeping agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109568869A (en) * | 2018-08-16 | 2019-04-05 | 浙江蓝盾电工新材料科技有限公司 | A kind of insulated type flame-retarding fire-extinguishing material and preparation method thereof |
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