CN110947149A - Modified high-molecular water-based extinguishing agent and preparation method thereof - Google Patents
Modified high-molecular water-based extinguishing agent and preparation method thereof Download PDFInfo
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Abstract
A modified high-molecular water-based fire extinguishing agent and a preparation method thereof, comprising high-molecular water-absorbing resin, a modifier, an additive and distilled water; the high-molecular water-absorbent resin comprises the following components in parts by weight: 50-60 parts of distilled water, 7-10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-8 parts of cationic starch, 4-6 parts of acrylic acid, 3-5 parts of sodium hydroxide, 0.5-1.5 parts of an initiator and 0.1-0.5 part of a cross-linking agent; the additive is sodium carboxymethyl cellulose. The modified high-molecular water-based extinguishing agent and the preparation method thereof are obtained by mixing the modified high-molecular water-absorbing resin with distilled water and an additive, and compared with the existing extinguishing agent, the modified high-molecular water-based extinguishing agent has the advantages of higher electrolyte, high temperature resistance and water absorption multiplying power, proper viscosity, good fire extinguishing effect, capability of more effectively inhibiting fire spreading in the vertical direction, simple preparation method and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of fire extinguishing agents, and particularly relates to a modified high-molecular water-based fire extinguishing agent and a preparation method thereof.
Background
The fire threatens public safety, jeopardizes social and economic development, pollutes environment and normal life of people, and is a common catastrophic problem faced by human beings. With the development of productivity and the increase of wealth, society advances, and the fire loss and the fire hazard range show rising and expanding trends. The severe reality shows that the fire disaster is a disaster with higher occurrence frequency and largest space-time span in the multiple disasters in the world at present, and the expansion of an industrial park and the proliferation of high-rise and super high-rise buildings in recent years bring new challenges to fire suppression in spite of more serious fire accidents in China. In the face of new fire situations and characteristics, research and popularization of new refractory materials and fire fighting technologies become more important to deal with the fire in the modern industrialized society.
Because of wide sources, low price, easy availability and good fire-extinguishing performance, water is commonly used for fighting building, forest and stacking fire and becomes the main fire-extinguishing agent for primary fire-fighting teams. However, water has serious disadvantages as a fire extinguishing agent, and firstly, water has good fluidity, most of water is lost in the fire extinguishing process, and the fire extinguishing efficiency is not high, especially the fire extinguishing efficiency is only one tenth or one hundredth of the fire extinguishing efficiency in the violent stage of a common fire. Secondly, the water can not inhibit smoke when extinguishing fire, a large amount of water vapor can be generated, the jet flow of the water gun can increase tens of times of strong and toxic smoke and strong smoke airflow flowing into the building in a fire scene, a smoke window is easily formed in a corridor, and people can difficultly escape. The third water adhesive force is very small, so that the fire disaster of combustible materials on the vertical surface can not be effectively protected and suppressed, and larger water stain loss is easily caused. In addition, water has many fires that are not suitable as a fire extinguishing agent, such as: the peroxide and the light metal and the like generate violent chemical reaction after meeting water, and the combustion is intensified; the fire fighting method can be used for fighting a high-temperature viscous combustible liquid fire, and can cause the phenomena of boiling over and splashing of the combustible liquid, so that the fire spreads.
Therefore, research on adding one or more agents into water changes physical and chemical properties of water, such as viscosity, adhesion, latent heat of vaporization and wetting power, so that the fire extinguishing efficiency of water is greatly improved. The fire extinguishing agent, which is composed of water and other chemical additives and is generally used for extinguishing fire in the form of liquid drops or liquid drop and foam mixture, is called water-based fire extinguishing agent.
Chinese patent application No. CN201810129471.0 discloses a water-based fire extinguishing agent, which adopts a self-made fluorocarbon surfactant, does not contain persistent organic pollutants, is degraded quickly, does not pollute the environment, but needs to be improved in fire extinguishing performance, and is poor in heat resistance and electrolyte resistance.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a modified high-molecular water-based fire extinguishing agent and a preparation method thereof, the modified high-molecular water-based fire extinguishing agent is obtained by mixing modified high-molecular water-absorbing resin with distilled water and an additive, and compared with the existing fire extinguishing agent, the modified high-molecular water-based fire extinguishing agent has the advantages of higher electrolyte, high temperature resistance, water absorption multiplying power and viscosity, good fire extinguishing effect, capability of more effectively inhibiting fire spreading in the vertical direction, simple preparation method and wide application prospect.
The purpose of the invention is realized by the following technical scheme:
a modified high-molecular water-based extinguishing agent is characterized by comprising high-molecular water-absorbing resin, a modifying agent, an additive and distilled water; the high-molecular water-absorbent resin comprises the following components in parts by weight: 50-60 parts of distilled water, 7-10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-8 parts of cationic starch, 4-6 parts of acrylic acid, 3-5 parts of sodium hydroxide, 0.5-1.5 parts of an initiator and 0.1-0.5 part of a cross-linking agent; the additive is sodium carboxymethyl cellulose.
The fire extinguishing agent of the high molecular water-absorbing resin fire extinguishing agent mainly has the cooling effect in the fire extinguishing effect, and is water absorbed and stored in the high molecular water-absorbing resin, but compared with the fire extinguishing effect only by using water, the fire extinguishing agent of the high molecular water-absorbing resin can form a gel layer on the surface of combustible to play a certain role in heat insulation and oxygen insulation, and the fire extinguishing agent of the high molecular water-absorbing resin fire extinguishing agent is in a colloid shape when being sprayed, has a certain viscosity and can play a certain role in controlling fire disasters occurring on a vertical surface.
The modified high-molecular water-based extinguishing agent is obtained by modifying high-molecular water-absorbing resin and mixing the modified high-molecular water-based extinguishing agent with distilled water and an additive. Although the water absorption rate of the high molecular water-absorbent resin is high, the high molecular water-absorbent resin has certain heat resistance when being applied to fire extinguishment, because the temperature of a fire scene is very high, if the heat resistance is poor, the high molecular water-absorbent resin is burnt without contacting with a combustible product when the fire extinguishing agent is sprayed to the fire scene, a covering layer cannot be formed on the surface of the combustible product, and the fire extinguishing agent cannot play the roles of oxygen isolation and heat insulation. The heat resistance can be improved by modifying the macromolecular water-absorbent resin with a modifier. In addition, distilled water is selected because tap water or water of rivers and lakes is mostly used for preparing the high molecular water-absorbent resin in the prior art, and the water often contains certain electrolyte and has great influence on the fire extinguishing effect. In addition, the fire extinguishing performance of the high molecular water-absorbing resin fire extinguishing agent is characterized in that a gel layer can be formed on the surface of a combustible material to play a role in isolating oxygen and heat, and a fire on a vertical plane can be controlled to a certain degree and prevented from spreading, and the reason is that the viscosity is an important performance of the fire extinguishing agent in part because the fire extinguishing agent has certain viscosity. But the gel formed by mixing the macromolecular water-absorbing resin and water is low in viscosity, so that the additive is added, wherein carboxymethyl cellulose enables the viscosity of the fire extinguishing agent to be proper, but the viscosity of the fire extinguishing agent cannot be too high, the spraying distance and height of the fire extinguishing agent can be reduced in practical application,
according to the modified high-molecular water-based extinguishing agent, through improvement of a formula, cationic starch with good electrolyte performance is used as a reaction monomer, a third monomer acrylamide methyl propanesulfonic acid is added, a modifying agent is used for modification, and finally the modified high-molecular water-based extinguishing agent is mixed with distilled water and an additive. Compared with the existing fire extinguishing agent, the modified high-molecular water-based fire extinguishing agent has higher electrolyte, high temperature resistance, water absorption rate and viscosity, has good fire extinguishing effect, and can more effectively inhibit fire spreading in the vertical direction.
Further, in the modified polymer water-based fire extinguishing agent, the initiator is one or a mixture of potassium persulfate, sodium persulfate and ammonium persulfate; the cross-linking agent is one or a mixture of N, N' -methylene bisacrylamide, polycarbodiimide and 3- (2, 3-epoxypropoxy) propyl trimethoxy silane.
Further, the modified polymer water-based fire extinguishing agent comprises the following components in parts by weight: 55 parts of distilled water, 7 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5 parts of cationic starch, 5 parts of acrylic acid, 3 parts of sodium hydroxide, 0.5 part of initiator and 0.1 part of cross-linking agent.
Further, the modified polymer water-based fire extinguishing agent is prepared by mixing inorganic minerals, wherein the inorganic minerals are one or more of kaolin, sodium-based montmorillonite, asbestos, mica and talc; the additive also comprises a flame retardant, wherein the flame retardant is one or a mixture of more of microcrystalline kaolinite, ammonium chloride, monoammonium phosphate, diammonium phosphate and borax.
According to the invention, some silicate minerals such as kaolin, sodium-based montmorillonite, asbestos, mica and the like are added, and the composite cross-linking can be carried out with organic monomers by utilizing the larger comparative area of the powder, so as to improve the water absorption rate, water absorption multiplying power, electrolyte resistance and heat resistance of the modified high-molecular water-based extinguishing agent, and particularly improve the electrolyte resistance and heat resistance of the product. The additive also comprises a flame retardant, so that the fire extinguishing performance is further improved.
The invention also relates to the modified high-molecular water-based fire extinguishing agent and a preparation method thereof, wherein the preparation method comprises the following steps: preparing high-molecular water-absorbing resin, and adding a modifier in the process of preparing the high-molecular water-absorbing resin to obtain the modified high-molecular water-absorbing resin; preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
Further, the preparation method of the modified high-molecular water-based fire extinguishing agent comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer, wherein the temperature of the stirrer is 60-90 ℃, and the stirring time is 40-60 min;
(2) adding the mixture into a reaction container after stirring, introducing nitrogen into the reaction container for 5-10 min, and adding an initiator for 10-15 min when the air in the reaction container disappears;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid and a modifier into a reaction vessel;
(5) after reacting for 15-20 min, adding a cross-linking agent, and continuing to react for 2.0-2.5 h;
(6) and chopping the reactants, putting the chopped reactants into an oven for drying at the temperature of 80-90 ℃ for 4.0-4.5 h, crushing after drying, and sieving to obtain the high-molecular water-absorbent resin.
The modified high-molecular water-based extinguishing agent greatly improves the heat resistance, electrolyte resistance and water absorption performance of the original high-molecular water-absorbent resin by changing the influence of factors such as raw material monomers, the mixture ratio of the raw material monomers, the dosage of the initiator, the initiation time, the dosage of the cross-linking agent, the cross-linking addition time and the like on the reaction.
Further, the modified polymer water-based fire extinguishing agent and the preparation method thereof, and the preparation method of the modified polymer water-absorbent resin, the step (5) further comprises the following steps: the reaction product in the reaction vessel was taken out, washed with distilled water and absolute ethanol, respectively, and then chopped.
The distilled water and the absolute ethyl alcohol are used for washing, so that inorganic and organic impurities contained in the reactant can be removed, and the adverse effect of the inorganic and organic impurities on the modified high-molecular water-absorbing resin is avoided.
Further, in the modified polymer water-based extinguishing agent and the preparation method thereof, the modified polymer water-absorbent resin is prepared by adopting a sample separation sieve in the step (6), wherein the sample separation sieve is a 100-200 mesh sample separation sieve.
Further, the modified high-molecular water-based fire extinguishing agent and the preparation method thereof are characterized in that the particle size of the modified high-molecular water-absorbent resin is 100-200 meshes.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention discloses a modified high-molecular water-based extinguishing agent, which is prepared by improving a formula, taking cationic starch with better electrolyte performance as a reaction monomer, adding a third monomer of acrylamide methyl propanesulfonic acid, modifying by using a modifying agent, and finally mixing with distilled water and an additive. Compared with the existing fire extinguishing agent, the fire extinguishing agent has higher electrolyte, high temperature resistance, water absorption rate and viscosity, has good fire extinguishing effect, and can more effectively inhibit fire spreading in the vertical direction;
(2) according to the modified polymer water-based extinguishing agent disclosed by the invention, silicate minerals such as kaolin, sodium-based montmorillonite, asbestos and mica are added in the formula, and the modified polymer water-based extinguishing agent can be subjected to composite crosslinking with an organic monomer by utilizing the larger comparative area of the powder so as to improve the water absorption rate, electrolyte resistance and heat resistance of the modified polymer water-based extinguishing agent, and particularly improve the electrolyte resistance and heat resistance of a product. The additive also comprises a flame retardant, so that the fire extinguishing performance is further improved;
(3) the modified high-molecular water-based extinguishing agent and the preparation method thereof provided by the invention have the advantages that the preparation method is simple and has high flexibility, and the heat resistance, the electrolyte resistance and the water absorption performance of the original high-molecular water-absorbent resin are greatly improved by changing the influence of factors such as raw material monomers, raw material monomer proportion, initiator dosage, initiation time, cross-linking agent dosage, cross-linking addition time and the like on the reaction.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to specific experimental data, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following embodiment provides a modified high-molecular water-based fire extinguishing agent and a preparation method thereof, wherein the modified high-molecular water-based fire extinguishing agent comprises high-molecular water-absorbing resin, a modifying agent, an additive and distilled water; the high-molecular water-absorbent resin comprises the following components in parts by weight: 50-60 parts of distilled water, 7-10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-8 parts of cationic starch, 4-6 parts of acrylic acid, 3-5 parts of sodium hydroxide, 0.5-1.5 parts of an initiator and 0.1-0.5 part of a cross-linking agent; the additive is sodium carboxymethyl cellulose.
Further, the initiator is one or a mixture of potassium persulfate, sodium persulfate and ammonium persulfate; the cross-linking agent is one or a mixture of N, N' -methylene bisacrylamide, polycarbodiimide and 3- (2, 3-epoxypropoxy) propyl trimethoxy silane.
Further, the modifier is an inorganic mineral, and the inorganic mineral is one or a mixture of kaolin, sodium-based montmorillonite, asbestos, mica and talc; the additive also comprises a flame retardant, wherein the flame retardant is one or a mixture of more of microcrystalline kaolinite, ammonium chloride, monoammonium phosphate, diammonium phosphate and borax.
Example 1
Preparing high-molecular water-absorbing resin according to a formula, and adding a modifier in the process of preparing the high-molecular water-absorbing resin, wherein the method comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer at the temperature of 60 ℃ for 60min;
(2) adding the mixture into a reaction container after stirring, introducing nitrogen into the reaction container for 5min, adding an initiator potassium persulfate when the air in the reaction container disappears, and initiating for 15 min;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid, kaolin and sodium montmorillonite into a reaction container;
(5) after reacting for 15min, adding a cross-linking agent N, N' -methylene bisacrylamide, and continuing to react for 2.0 h; after the reaction is finished, taking out the reactants in the reaction container, washing the reactants by using distilled water and absolute ethyl alcohol respectively, and cutting the reactants after washing;
(6) and chopping the reactant, drying in an oven at the temperature of 80 ℃ for 4.0h, crushing after drying, sieving by using a sample sieve of 100-200 meshes to obtain the high-molecular water-absorbent resin.
Preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
Example 2
Preparing high-molecular water-absorbing resin according to a formula, and adding a modifier in the process of preparing the high-molecular water-absorbing resin, wherein the method comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer at the temperature of 60 ℃ for 60min;
(2) adding the mixture into a reaction container after stirring is finished, introducing nitrogen into the reaction container for 5min, adding an initiator ammonium persulfate when the air in the reaction container disappears, and initiating for 10 min;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid, a modifier asbestos and mica into a reaction vessel;
(5) after reacting for 15min, adding a cross-linking agent N, N' -methylene bisacrylamide, and continuing to react for 2.0 h; after the reaction is finished, taking out the reactants in the reaction container, washing the reactants by using distilled water and absolute ethyl alcohol respectively, and cutting the reactants after washing;
(6) and chopping the reactant, drying in an oven at the temperature of 80 ℃ for 4.0h, crushing after drying, sieving by using a sample sieve of 100-200 meshes to obtain the high-molecular water-absorbent resin.
Preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
Example 3
Preparing high-molecular water-absorbing resin according to a formula, and adding a modifier in the process of preparing the high-molecular water-absorbing resin, wherein the method comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer at the temperature of 60 ℃ for 60min;
(2) adding the mixture into a reaction vessel after stirring, introducing nitrogen into the reaction vessel for 5min, adding an initiator sodium persulfate when the air in the reaction vessel disappears, and initiating for 12 min;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid, a modifier kaolin and talc into a reaction vessel;
(5) after reacting for 20min, adding a cross-linking agent N, N' -methylene bisacrylamide, and continuing to react for 2.0 h; after the reaction is finished, taking out the reactants in the reaction container, washing the reactants by using distilled water and absolute ethyl alcohol respectively, and cutting the reactants after washing;
(6) and chopping the reactant, drying in an oven at the temperature of 80 ℃ for 4.0h, crushing after drying, sieving by using a sample sieve of 100-200 meshes to obtain the high-molecular water-absorbent resin.
Preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
Example 4
Preparing high-molecular water-absorbing resin according to a formula, and adding a modifier in the process of preparing the high-molecular water-absorbing resin, wherein the method comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer, wherein the temperature of the stirrer is 80 ℃, and the stirring time is 40 min;
(2) adding the mixture into a reaction container after stirring, introducing nitrogen into the reaction container for 5min, adding an initiator potassium persulfate when the air in the reaction container disappears, and initiating for 15 min;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid, modifier sodium montmorillonite, asbestos and mica into a reaction vessel;
(5) after reacting for 15-20 min, adding a cross-linking agent 3- (2, 3-epoxypropoxy) propyl trimethoxy silane, and continuing to react for 2.5 h; after the reaction is finished, taking out the reactants in the reaction container, washing the reactants by using distilled water and absolute ethyl alcohol respectively, and cutting the reactants after washing;
(6) and chopping the reactant, drying in an oven at 90 ℃ for 4.5h, crushing after drying, sieving, and sieving by using a sample sieve of 100-200 meshes to obtain the high-molecular water-absorbent resin.
Preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
Example 5
Preparing high-molecular water-absorbing resin according to a formula, and adding a modifier in the process of preparing the high-molecular water-absorbing resin, wherein the method comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer at the temperature of 60 ℃ for 60min;
(2) adding the mixture into a reaction container after stirring is finished, introducing nitrogen into the reaction container for 5min, adding an initiator ammonium persulfate when the air in the reaction container disappears, and initiating for 10 min;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid, modifier sodium montmorillonite and talc into a reaction vessel;
(5) after reacting for 15-20 min, adding a cross-linking agent polycarbodiimide, and continuing to react for 2.0 h; after the reaction is finished, taking out the reactants in the reaction container, washing the reactants by using distilled water and absolute ethyl alcohol respectively, and cutting the reactants after washing;
(6) and chopping the reactant, drying in an oven at the temperature of 80 ℃ for 4.0h, crushing after drying, sieving by using a sample sieve of 100-200 meshes to obtain the high-molecular water-absorbent resin.
Preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
Effect verification:
the modified polymer water-based fire extinguishing agents obtained in examples 1, 2,3, 4 and 5 were tested for their performance according to the following criteria, and the test results are shown in table 1.
Measuring water absorption multiplying power, namely accurately weighing the dried modified polymer water-based fire extinguishing agent which is obtained by the previous example 1, the previous example 2, the previous example 3, the previous example 4 and the previous example 5 and is sieved, adding distilled water or tap water with the mass of M1 into the fire extinguishing agent respectively, stirring the fire extinguishing agent by using a stirrer in the adding process to ensure that the fire extinguishing agent fully absorbs water and swells, pouring the product which absorbs water and swells into a sample sieve with 200 meshes after stirring and absorbing water, standing the fire extinguishing agent until no water is filtered out, and then weighing the mass of filtered water M2, wherein the water absorption multiplying power can be expressed by the following formula: and the water absorption multiplying power Q is M1-M2/M.
Determination of Water absorption Rate: the modified polymer water-based fire extinguishing agents obtained in examples 1, 2,3, 4, and 5 were accurately weighed and the water absorption ratios thereof were measured at 5min, 10min, 15min, and 20min, respectively, in the above water absorption ratio measurement method; the water absorption rate is the water absorption capacity/water absorption time.
Measurement of viscosity: the viscosities of the modified polymer water-based fire extinguishing agents obtained in examples 1, 2,3, 4, and 5 were measured using NDJ-8S digital rotational viscosity agent at a rotational speed of 30.
Fire extinguishing performance: the experimental equipment is a wood stack, the specification of the wood stack is three stacks of wood stacks with long length, wide width and high height, the selected wood is pine with long cross section, the battens are overlapped layer by layer, and the battens are overlapped together in a transverse and longitudinal staggered mode. The wood crib is horizontally placed on the ground, the ambient temperature is measured to be 32 ℃ and the wind speed is measured to be 16-18 m/s, a certain amount of water and gasoline are poured into an iron oil pan with the radius of 20cm, the iron oil pan is placed in the center of the lower portion of the stack, the oil pan is ignited, the oil pan is taken away after 3 ignition minutes, and after 2 minutes after the oil pan is removed, the modified polymer water-based fire extinguishing agent and the water obtained in the above examples 1, 2,3, 4 and 5 are used for extinguishing fire.
TABLE 1 sample Performance test results
Further, the modified polymer water-based fire extinguishing agents obtained in examples 1, 2,3, 4 and 5 were excellent in fire extinguishing performance, and compared with water, were capable of extinguishing a wood crib fire more rapidly, suppressing the height of flames, preventing the wood crib fire from reigniting during the fire extinguishing process, and were capable of generating only slight smoke during the fire extinguishing process, and were capable of generating no smoke after the fire extinguishing process, and were high in flames after the water spraying process, and black and white smoke was generated on the front, middle and rear surfaces of the wood crib.
The invention has many applications, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (9)
1. A modified high-molecular water-based extinguishing agent is characterized by comprising high-molecular water-absorbing resin, a modifying agent, an additive and distilled water; the high-molecular water-absorbent resin comprises the following components in parts by weight: 50-60 parts of distilled water, 7-10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-8 parts of cationic starch, 4-6 parts of acrylic acid, 3-5 parts of sodium hydroxide, 0.5-1.5 parts of an initiator and 0.1-0.5 part of a cross-linking agent; the additive is sodium carboxymethyl cellulose.
2. The modified polymer water-based fire extinguishing agent according to claim 1, wherein the initiator is one or a mixture of potassium persulfate, sodium persulfate and ammonium persulfate; the cross-linking agent is one or a mixture of N, N' -methylene bisacrylamide, polycarbodiimide and 3- (2, 3-epoxypropoxy) propyl trimethoxy silane.
3. The modified polymer water-based fire extinguishing agent as claimed in claim 1, wherein the polymer water-absorbent resin comprises the following components in parts by weight: 55 parts of distilled water, 7 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5 parts of cationic starch, 5 parts of acrylic acid, 3 parts of sodium hydroxide, 0.5 part of initiator and 0.1 part of cross-linking agent.
4. The modified polymer water-based fire extinguishing agent as claimed in claim 1, wherein the modifying agent is an inorganic mineral, and the inorganic mineral is one or a mixture of kaolin, sodium-based montmorillonite, asbestos, mica and talc; the additive also comprises a flame retardant, wherein the flame retardant is one or a mixture of more of microcrystalline kaolinite, ammonium chloride, monoammonium phosphate, diammonium phosphate and borax.
5. The method for producing a modified polymer water-based fire extinguishing agent according to any one of claims 1 to 4, comprising the steps of: preparing high-molecular water-absorbing resin, and adding a modifier in the process of preparing the high-molecular water-absorbing resin to obtain the modified high-molecular water-absorbing resin; preparing sodium carboxymethylcellulose and distilled water into a sodium carboxymethylcellulose solution with the mass ratio of 1.5%; weighing the modified high-molecular water-absorbing resin, adding the sodium carboxymethylcellulose solution in a ratio of 1:1, and uniformly stirring by using a stirrer to obtain the modified high-molecular water-based fire extinguishing agent.
6. The method for preparing a modified polymer water-based fire extinguishing agent according to claim 5, wherein the method for preparing the modified polymer water-absorbent resin comprises the following steps:
(1) stirring and activating cationic starch and distilled water in a stirrer, wherein the temperature of the stirrer is 60-90 ℃, and the stirring time is 40-60 min;
(2) adding the mixture into a reaction container after stirring, introducing nitrogen into the reaction container for 5-10 min, and adding an initiator for 10-15 min when the air in the reaction container disappears;
(3) preparing sodium hydroxide and acrylic acid into a solution, wherein the neutralization degree of the solution is 60-80%;
(4) adding the solution, 2-acrylamide-2-methylpropanesulfonic acid and a modifier into a reaction vessel;
(5) after reacting for 15-20 min, adding a cross-linking agent, and continuing to react for 2.0-2.5 h;
(6) and chopping the reactants, putting the chopped reactants into an oven for drying at the temperature of 80-90 ℃ for 4.0-4.5 h, crushing after drying, and sieving to obtain the high-molecular water-absorbent resin.
7. The method for preparing a modified polymer water-based fire extinguishing agent according to claim 6, wherein the step (5) further comprises the steps of: the reaction product in the reaction vessel was taken out, washed with distilled water and absolute ethanol, respectively, and then chopped.
8. The method for preparing the modified polymer water-based fire extinguishing agent according to claim 6, wherein the step (6) is carried out by using a sample separation sieve, and the sample separation sieve is a 100-200 mesh sample separation sieve.
9. The method for producing a modified polymer water-based fire extinguishing agent according to claim 6, wherein the particle size of the modified polymer water-absorbent resin is 100-200 mesh.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116159274A (en) * | 2023-03-01 | 2023-05-26 | 徐州兴顺消防科技有限公司 | Water-based foam extinguishing agent |
| CN117442921A (en) * | 2023-11-01 | 2024-01-26 | 四川峰邦消防科技有限公司 | Novel polymer gel fire-extinguishing flame retardant and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006248958A1 (en) * | 2005-05-19 | 2006-11-23 | Basf Se | Use of aqueous dispersions of water-soluble and/or water-swellable polymers in extinguishing agents and method for fighting fires |
| CN102114315A (en) * | 2010-12-21 | 2011-07-06 | 太原理工大学 | Water absorbent resin fire-extinguishing agent and application thereof |
| CN102166399A (en) * | 2011-03-02 | 2011-08-31 | 太原理工大学 | Absorbent polymer extinguishing agent preparation method |
| CN104072667A (en) * | 2014-06-16 | 2014-10-01 | 山东科技大学 | Synthesis method of forest fire extinguishing agent based on multi-component super absorbent nanometer material |
-
2019
- 2019-12-09 CN CN201911247152.0A patent/CN110947149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006248958A1 (en) * | 2005-05-19 | 2006-11-23 | Basf Se | Use of aqueous dispersions of water-soluble and/or water-swellable polymers in extinguishing agents and method for fighting fires |
| CN102114315A (en) * | 2010-12-21 | 2011-07-06 | 太原理工大学 | Water absorbent resin fire-extinguishing agent and application thereof |
| CN102166399A (en) * | 2011-03-02 | 2011-08-31 | 太原理工大学 | Absorbent polymer extinguishing agent preparation method |
| CN104072667A (en) * | 2014-06-16 | 2014-10-01 | 山东科技大学 | Synthesis method of forest fire extinguishing agent based on multi-component super absorbent nanometer material |
Non-Patent Citations (5)
| Title |
|---|
| 中华人民共和国公安部消防局: "《中国消防手册》", 31 December 2007, 上海科学技术出版社 * |
| 周瑞发: "《纳米材料技术》", 31 July 2003, 国防工业出版社 * |
| 崔克清: "《安全工程大辞典》", 30 November 1995, 化学工业出版社 * |
| 曹邦威: "《造纸助留剂与干湿增强剂的理论与应用》", 31 July 2011, 中国轻工业出版社 * |
| 程远平等: "《消防工程学》", 31 May 2002, 中国矿业大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116159274A (en) * | 2023-03-01 | 2023-05-26 | 徐州兴顺消防科技有限公司 | Water-based foam extinguishing agent |
| CN117442921A (en) * | 2023-11-01 | 2024-01-26 | 四川峰邦消防科技有限公司 | Novel polymer gel fire-extinguishing flame retardant and preparation method thereof |
| CN117442921B (en) * | 2023-11-01 | 2024-05-24 | 四川峰邦消防科技有限公司 | Polymer gel fire-extinguishing flame retardant and preparation method thereof |
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