CN102875747A - Preparation method of macromolecule water-absorbent resin fire extinguishing agent - Google Patents
Preparation method of macromolecule water-absorbent resin fire extinguishing agent Download PDFInfo
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- CN102875747A CN102875747A CN 201210330135 CN201210330135A CN102875747A CN 102875747 A CN102875747 A CN 102875747A CN 201210330135 CN201210330135 CN 201210330135 CN 201210330135 A CN201210330135 A CN 201210330135A CN 102875747 A CN102875747 A CN 102875747A
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Abstract
The invention discloses a preparation method of macromolecule water-absorbent resin fire extinguishing agent. The preparation method comprises the following steps: preparing NaOH aqueous solution; carrying out neutralization reaction with the prepared NaOH aqueous solution and acrylic acid; and carrying out graft copolymerization reaction, and solidifying, drying and crushing to prepare a product of which the water absorbent rate is more than 500g/g. According to the preparation method of macromolecule water-absorbent resin fire extinguishing agent disclosed by the invention, the product is polymerized in one step; baking and drying are not required; the process procedure is shortened; the production period is short; the cost is low; the three wastes cannot be generated during production process; and the product is pollution-free to the environment, safe and environment-friendly. The fire extinguishing agent product prepared according to the method is high in specific heat capacity, large in evaporation heat amount, nonflammable and strong in water storage capacity, so that the product has the advantages of fast fire extinguishing speed, low price, convenient operation and the like.
Description
Technical field
The present invention relates to a kind of preparation method of hydroscopic high-molecular resin fire-fighting medium.
Background technology
Super absorbent resin is as a kind of developing history in existing more than 30 year of macromolecular material that specific function is arranged, because the three-dimensional space network structure of this material uniqueness firmly holds onto moisture, characteristic with high multiple suction, extremely strong water retention property, good biodegradability, many fields in productive life are widely used, particularly under hot conditions, still has preferably water retention property, make it have sizable thermal capacitance, and can be as medicament carrier, effectively completely cut off flare, prevent spreading and resume combustion of fire, will 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 a large disaster of society frequent occurrence, 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 control to fire adopts hydraulic giant to carry out the method for high-voltage high-speed injection water particularly to the fire extinguishing in the large-scale scene of a fire usually.Take on intensity of a fire extreme temperatures when violent, water will evaporate immediately to the section of catching fire, and the cooling effect of water can't be given full play to, and easy resume combustion, to remedy difficulty large, and difficulty or ease are efficiently finished the important task that stamps out a fire.Super absorbent resin is the functional polymer that contains polar group in the 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 is strong and the characteristics such as environmental protection, therefore is with a wide range of applications aspect fire-fighting fire extinguishing.
Summary of the invention
For the deficiency that prior art exists, technical problem to be solved by this invention is that a kind of preparation method of hydroscopic high-molecular resin fire-fighting medium is provided, shortened process reduces the production time, reduces production costs, constant product quality, convenient artificial, the mechanical firefighting of product.
For solving the problems of the technologies described above, the technical solution used in the present invention is that a kind of preparation method of hydroscopic high-molecular resin fire-fighting medium comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH360g with purity, be dissolved in the 650g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, the reaction times is 20-30 minute; Then cool to 60-70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 400-500g wilkinite stirs, rotating speed is 80-120r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 80 ℃-115 ℃, and the reaction times is 15-30 minute;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 10-20 minute, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the above finished product of water absorbent rate 500g/g.
The preparation method of the hydroscopic high-molecular resin fire-fighting medium of optimizing comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH 360g with concentration, be dissolved in the 650g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, 28 minutes reaction times; Then cool to 60 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 400g wilkinite stirs, rotating speed is 90r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 90 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 20 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the finished product of water absorbent rate 700g/g.
Among the above-mentioned preparation method, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃.
The preparation method of hydroscopic high-molecular resin fire-fighting medium of the present invention has following advantage and beneficial effect:
1, preparation method of the present invention, once aggregate into the hydroscopic high-molecular resin fire-fighting medium, it is dry to need not baking, the process of polymerization exotherm is exactly dry process, need not starch pasting, need not the processes such as washing, saponification, the technological process of production has been shortened more than 5 times, can about 1 hour, produce finished product, reduce production costs, thereby solve the technical barrier that the production cycle is long, cost is high.Simultaneously, produce environmentally safe, safety and environmental protection in the production process without the three wastes (waste material, waste gas, waste water).
2, use the constant product quality that preparation method of the present invention produces, its fire-fighting medium product is that the mutual winding physical crosslinking by chemically crosslinked and polymer molecule interchain consists of, can form the gel product with the water that absorbs, its unique three-dimensional space network structure can firmly hold onto water molecules, it has sizable hot melt, particularly still has preferably water retention property under the condition of high temperature.This fire-fighting medium product is put into water, become gel liquid in the several minutes, because it has the quick water-retaining capacity more than hundreds of times, it is strong particularly to heat water retention property, heat-resisting, high temperature resistant, it is sprayed in the 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, secluding air can reach the purpose of fire extinguishing fast.
Its fire-fighting medium product is sprayed at still that unburned body surface can completely cut off flare, prevents spreading of fire, also can reach the fp purpose.Especially the fire of forest, building construction, can be with fire-fighting medium gel aqueous fluid body and function aircraft or other sprinker, be sprinkled upon still on unburned trees, the building surface, make its distribution be adsorbed on the surface of trees, leaf, roof, Fang Bi etc., formation contains moisture film, effectively prevents spreading of fire.Spray continuously diffusion on the fire surface, because of its water retention capacity strong, extinguishing ability is large, flame is covered by fire-fighting medium hydrogel liquid, secluding air can be brought into play larger fire extinguishing fire prevention and render a service, its fire-fighting medium product specific heat capacity is high, vaporization heat greatly, do not burn, moisture storage capacity large (can in several minutes, absorb the moisture more than hundreds of times), 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.
Embodiment
Embodiment 1
The preparation method of the hydroscopic high-molecular resin fire-fighting medium of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 360g with concentration, be dissolved in the 650g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, the reaction times is 20 minutes; Then cool to 70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 500g wilkinite stirs, rotating speed is 80r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 115 ℃, and the reaction times is 15 minutes;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 10 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the finished product of water absorbent rate 500g/g.
Embodiment 2
The preparation method of the hydroscopic high-molecular resin fire-fighting medium of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 360g with concentration, be dissolved in the 650g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, 28 minutes reaction times; Then cool to 60 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 400g wilkinite stirs, rotating speed is 90r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 100 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 20 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the finished product of water absorbent rate 700g/g.
Embodiment 3
The preparation method of the hydroscopic high-molecular resin fire-fighting medium of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 360g with concentration, be dissolved in the 650g water;
(2) neutralization reaction: it is in 99.7% the vinylformic acid that the NaOH aqueous solution for preparing is joined 1500g purity continuously, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃; Carry out neutralization reaction, the reaction times is 22 minutes; Then cool to 70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 500g wilkinite stirs, rotating speed is 110r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 80 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 15 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the finished product of water absorbent rate 600g/g.
Embodiment 4
The preparation method of the hydroscopic high-molecular resin fire-fighting medium of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 360g with concentration, be dissolved in the 650g water;
(2) neutralization reaction: it is in 99.9% the vinylformic acid that the NaOH aqueous solution for preparing is joined 1500g purity continuously, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃; Carry out neutralization reaction, the reaction times is 30 minutes; Then cool to 65 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 450g wilkinite stirs, rotating speed is 120r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 110 ℃, and the reaction times is 20 minutes;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 15 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the finished product of water absorbent rate 550g/g.
Claims (2)
1. the preparation method of a hydroscopic high-molecular resin fire-fighting medium comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH360g with purity, be dissolved in the 650g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, the reaction times is 20-30 minute; Then cool to 60-70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 400-500g wilkinite stirs, rotating speed is 80-120r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 80 ℃-115 ℃, and the reaction times is 15-30 minute;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 10-20 minute, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the above finished product of water absorbent rate 500g/g.
2. the preparation method of hydroscopic high-molecular resin fire-fighting medium according to claim 1 is characterized in that, comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH 360g with concentration, be dissolved in the 650g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, 28 minutes reaction times; Then cool to 60 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 400g wilkinite stirs, rotating speed is 90r/min, add again 5g ethylene glycol linking agent, then add 4g Potassium Persulphate initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 90 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 20 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, namely gets the finished product of water absorbent rate 700g/g.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203089A (en) * | 2013-03-20 | 2013-07-17 | 北京工业大学 | Extinguishing material for coal mine, and production method thereof |
| CN106075791A (en) * | 2016-07-20 | 2016-11-09 | 周荣 | A kind of preparation method of polymolecularity aerosol extinguishing agent |
| CN112473066A (en) * | 2020-12-08 | 2021-03-12 | 应急管理部天津消防研究所 | Low-freezing-point gel type forest fire extinguishing agent and preparation method thereof |
| CN115317843A (en) * | 2022-08-31 | 2022-11-11 | 四川省林业科学研究院 | Fire extinguishing agent for forest fire prevention and preparation method thereof |
-
2012
- 2012-09-10 CN CN 201210330135 patent/CN102875747A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203089A (en) * | 2013-03-20 | 2013-07-17 | 北京工业大学 | Extinguishing material for coal mine, and production method thereof |
| CN106075791A (en) * | 2016-07-20 | 2016-11-09 | 周荣 | A kind of preparation method of polymolecularity aerosol extinguishing agent |
| CN112473066A (en) * | 2020-12-08 | 2021-03-12 | 应急管理部天津消防研究所 | Low-freezing-point gel type forest fire extinguishing agent and preparation method thereof |
| CN115317843A (en) * | 2022-08-31 | 2022-11-11 | 四川省林业科学研究院 | Fire extinguishing agent for forest fire prevention and preparation method thereof |
| CN115317843B (en) * | 2022-08-31 | 2024-01-19 | 四川省林业科学研究院 | Fire extinguishing agent for forest fire prevention and preparation method thereof |
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Application publication date: 20130116 |