CN112169241A - Water-based aerogel efficient fire extinguishing agent and preparation method thereof - Google Patents
Water-based aerogel efficient fire extinguishing agent and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the field of novel emergency security materials, and particularly relates to a water-based aerogel efficient fire extinguishing agent and further discloses a preparation method thereof. The water-based aerogel high-efficiency fire extinguishing agent disclosed by the invention takes inorganic aerogel powder, a template agent, a phosphorus-containing fire retardant, a nitrogen-containing fire retardant and a hydrophilic colloid stabilizer as raw materials, and the efficiency of the fire extinguishing agent is greatly improved by utilizing the ultralow heat conductivity coefficient and the ultrahigh adsorption capacity of the inorganic nano porous aerogel; meanwhile, the phosphorus-containing flame retardant and the nitrogen-containing flame retardant are combined to serve as relevant functional components of the fire extinguishing agent, and the colloid stabilizer and the ionic buffering agent are added into the water-based flame retardant, so that the uniformity and the quality guarantee period of the flame retardant are increased, the flame-retardant fire extinguishing agent has a high-efficiency fire extinguishing function, a good fire preventing function and a good flame retarding function, and also has a long quality guarantee storage life, and the fire extinguishing type, efficiency and application range of the flame-retardant fire extinguishing agent are effectively enlarged.
Description
Technical Field
The invention belongs to the field of new emergency security materials, and particularly relates to a water-based aerogel efficient fire extinguishing agent, and further discloses a preparation method thereof.
Background
Along with the serious threat of life and property safety of people caused by the continuously reported striking and alarming fire, the performance and the function of the fire extinguishing agent are more concerned. The fire extinguishing agent is a substance capable of effectively destroying combustion conditions and terminating combustion, and the fire extinguishing agents used by the traditional fire extinguishing products on the market mainly comprise water-based fire extinguishing agents, dry powder fire extinguishing agents and clean gas fire extinguishing agents.
Conventional fire extinguishing agents, regardless of their formulation, generally perform the function of extinguishing fire in two ways: firstly, the temperature is reduced, for example, the temperature of the comburent is reduced to be below the burning point by water, and the liquid separated out by the foam can cool the surface of the comburent; the other is to isolate oxygen, for example by covering the surface of the burning object with foam or powder, so as to isolate it from air (oxygen), and the so-called "choking" by using carbon dioxide also belongs to this principle.
However, conventional fire extinguishing agents often suffer from a number of drawbacks during use, such as: 1. the functions are incompatible, and the traditional fire extinguishing agent cannot simultaneously have the functions of cooling and isolating, so that different fire extinguishing agents are required to be adopted according to different fire source conditions, and the complexity of operation is increased; 2. the application scenes are limited, the traditional fire extinguishing agent has great limitation on the application scenes, for example, a foam fire extinguishing agent is not suitable for extinguishing fire disasters of live equipment, metal fires and gas fires, a carbon dioxide fire extinguishing agent is not suitable for extinguishing chemical fires, metal fires and fiber fires, and water directly acts on oil fires and combustible dust to easily cause deflagration; 3. The effect is not ideal, and the traditional fire extinguishing agent often has the defect of insufficient efficiency at the critical moment of fire; 4. The environmental protection does not reach the standard, the traditional fire extinguishing agent also faces the environmental protection pressure that the traditional fire extinguishing agent is easy to cause damage when in use and is easy to pollute when in recovery due to time, and the traditional fire extinguishing agent also needs to meet the requirement of environmental protection.
Therefore, although the conventional fire extinguishing agents still occupy the mainstream of product sales in the market and play an important role, the conventional water-based fire extinguishing agents still need to be subjected to the historical time of upgrading, and particularly, the conventional water-based fire extinguishing agents cannot simultaneously meet the use defects of general fires, oil fires, edible oil fires and live fires, low fire extinguishing efficiency and the like, so that the development of a new generation of multipurpose high-efficiency fire extinguishing agents is urgently needed.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a water-based aerogel high-efficiency fire extinguishing agent to solve the problems of narrow application range, weak flame retardant property and low fire extinguishing efficiency of fire extinguishing objects in the prior art;
the second technical problem to be solved by the invention is to provide a preparation method of the water-based aerogel high-efficiency fire extinguishing agent.
In order to solve the technical problems, the water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the preparation raw materials of the fire extinguishing agent:
specifically, the inorganic aerogel powder comprises at least one of aerogel powder such as silicon oxide, aluminum oxide, zirconium oxide, silicon-aluminum binary hybrid, silicon-zirconium binary hybrid and the like; preferably, the inorganic aerogel needs to be processed into powder in advance, and the particle size of the powder particles is 10-100 microns.
Specifically, the template agent comprises at least one of cetyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate or cetyl trimethyl ammonium chloride.
Specifically, the phosphorus-containing flame retardant comprises at least one of ammonium dihydrogen phosphate, tris (2, 3-dibromopropyl) phosphate or thiophosphoric acid triisocyanate.
Specifically, the nitrogen-containing flame retardant comprises urea and ammonium pentaborate (NH)4B5O8·4H2O), ammonium hydrogen carbonate (NH)4HCO3) Or a mixture of at least two of melamine cyanurate.
Specifically, the hydrocolloid stabilizer comprises at least one of carbomer, alginate or carboxymethyl cellulose.
Specifically, the hydrogen ion concentration buffer comprises a mixture of at least two of sodium dihydrogen phosphate, dipotassium hydrogen phosphate, acetic acid, sodium acetate, ammonia water and ammonium chloride.
The invention also discloses a method for preparing the water-based aerogel high-efficiency fire extinguishing agent, which comprises the following steps:
(1) preparing aerogel sol: introducing nitrogen into a selected amount of aerogel powder at the temperature of 180-250 ℃ for surface modification heat treatment, adding a selected amount of the template agent, uniformly mixing and fully milling, and then adding water for fully stirring to obtain the required aerogel sol for later use;
(2) preparing a water-based flame retardant agent: mixing a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adding water, fully and uniformly mixing, then adding a selected amount of the hydrophilic colloid stabilizer, and uniformly mixing to obtain a required aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: fully and uniformly mixing the obtained aerogel sol and the aqueous flame retardant agent mixed solution, and adding the hydrogen ion concentration buffering agent to adjust the pH value of the obtained mixed solution to be neutral (6.5-7.5);
(4) curing: and curing the obtained mixed material liquid at normal temperature to obtain the required fire extinguishing agent.
Specifically, in the step (1):
the treatment time of the surface modification heat treatment step of the aerogel powder is at least 3 h;
the treatment time of the grinding step is at least 3 h.
Specifically, in the step (4), the treatment time of the curing step is 8-9 h.
The water-based aerogel high-efficiency fire extinguishing agent disclosed by the invention takes inorganic aerogel powder, a template agent, a phosphorus-containing fire retardant, a nitrogen-containing fire retardant and a hydrophilic colloid stabilizer as raw materials, and the efficiency of the fire extinguishing agent is greatly improved by utilizing the ultralow heat conductivity coefficient and the ultrahigh adsorption capacity of the inorganic nano porous aerogel; meanwhile, the phosphorus-containing flame retardant and the nitrogen-containing flame retardant are combined to serve as relevant functional components of the fire extinguishing agent, and the colloid stabilizer and the ionic buffering agent are added into the water-based flame retardant, so that the uniformity and the quality guarantee period of the flame retardant are increased, the fire extinguishing agent has a high-efficiency fire extinguishing function, a good fire preventing function and a good flame retarding function, and also has a long quality guarantee storage life, and the fire extinguishing type, efficiency and application range are effectively enlarged.
The water-based aerogel high-efficiency fire extinguishing agent provided by the invention is prepared by using inorganic nano-porous aerogel as a fire extinguishing agent for the first time, wherein the inorganic nano-porous aerogel comprises at least one of silica, alumina, zirconia, silicon-aluminum binary hybrid, silicon-zirconium binary hybrid and the like, and the aerogel is processed into a powdery form with the particle size of 10-100 microns in advance and then is used. After the aerogel particles are fully absorbed with the fire extinguishing agent, the surfaces of the aerogel particles are uneven due to rich holes, the surface area of the aerogel particles is far larger than that of liquid particles (liquid drops) with the same volume, the volatilization speed of the fire extinguishing agent is far larger than that of liquid drops under the same condition, the process of taking away heat through volatilization of the fire extinguishing agent is far faster than that of a pure liquid fire extinguishing agent, the temperature is more rapidly reduced, and the fire extinguishing agent can directly reach the center of a fire source. Moreover, inhale aerogel granule that fills up fire extinguishing agent and just form one deck aerogel heat preservation after its top layer fire extinguishing agent volatilizees, prevented the too fast volatilization of its central part fire extinguishing agent, make it can pass the direct fire source center of flame, aerogel granule adsorbs on the comburent surface, the cooling of continuing volatilizing of its central part fire extinguishing agent, directly reduce fire source central temperature, traditional pure liquid fire extinguishing agent has effectively been overcome, often totally volatilizees when arriving at the fire source center, when the intensity of a fire is very big, often be difficult to spray into the defect at fire source center. In addition, the aerogel particles are small in size, light in weight, large in surface area and very high in adsorption (adhesion) performance, can be quickly adsorbed on the surface of a comburent to isolate air (oxygen), and can quickly float to cover the surface of the comburent to isolate air (oxygen) for the oil on fire, so that the quick fire extinguishing effect is achieved; the huge specific surface area of aerogel can also have high-efficient adsorption to various poisonous and harmful gas, therefore this medicament begin to adsorb various flue gases rapidly when spraying and putting out a fire, makes the dense black conflagration flue gas disappear fast, effectively protects the life. Moreover, the aerogel is the material that coefficient of heat conductivity is the lowest in the present international, has high-efficient thermal-insulated effect, and inorganic aerogel also is the fire prevention fire-retardant material of excellence simultaneously, and after its adhesion covered in burning thing surface, not only can effectively put out a fire, can high-efficient fire-retardant moreover, prevents the after combustion, to big fire such as forest, meadow, can form high-efficient fire prevention median rapidly through spraying this fire extinguishing agent. In conclusion, the water-based aerogel efficient fire extinguishing agent effectively solves the problems of narrow application range, weak flame retardant property and low fire extinguishing efficiency of fire extinguishing objects in the prior art, and has extremely high application value.
Drawings
In order that the present disclosure may be more readily and clearly understood, the following detailed description of the present disclosure is provided in connection with the accompanying drawings, which,
FIG. 1 is a flow chart of the preparation of the water-based aerogel efficient fire extinguishing agent of the invention.
Detailed Description
Example 1
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
as shown in the preparation flow chart of fig. 1, the preparation method of the water-based aerogel high-efficiency fire extinguishing agent according to the embodiment includes the following steps:
(1) preparing aerogel sol: firstly, carrying out surface modification on silicon dioxide aerogel powder, and carrying out heat treatment for 4 hours at 220 ℃ under the condition of introducing clean nitrogen; then evenly mixing the mixture with a selected amount of template agent and fully grinding the mixture for 4 hours; after grinding and mixing uniformly, adding a proper amount of deionized water, stirring for 2.5 hours, wherein the dosage of the deionized water is not less than 25 wt% of the total amount, and controlling the rotating speed of the stirrer to be 150r/min so as to obtain aerogel sol for later use;
(2) preparing a water-based flame retardant agent: adding deionized water with the total amount not less than 15 wt% into a stirrer, adding a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adjusting the rotation speed of the stirrer to be 120r/min, stirring for 1.5-1.8h, adding the hydrophilic colloid stabilizer, and continuously stirring for 1.0-1.2h to obtain a stable aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: mixing the aerogel sol and the aqueous flame retardant agent mixed solution, adding the mixture into a stirrer, adjusting the rotating speed of the stirrer to be 120r/min, stirring at normal temperature for at least 2h, supplementing deionized water during stirring until the fraction reaches a rated value, and fully stirring to obtain a uniform mixed solution; then adjusting the pH value of the mixed solution to be neutral (6.5-7.5) by using the hydrogen ion concentration buffer and maintaining the pH value; and curing the mixed solution with the adjusted and maintained pH value at normal temperature for 8-9h to obtain the required fire extinguishing agent product.
Example 2
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
as shown in the preparation flow chart of fig. 1, the preparation method of the water-based aerogel high-efficiency fire extinguishing agent according to the embodiment includes the following steps:
(1) preparing aerogel sol: firstly, carrying out surface modification on silicon dioxide aerogel powder, and carrying out heat treatment for 3 hours at the temperature of 250 ℃ under the condition of introducing clean nitrogen; then evenly mixing the mixture with a selected amount of template agent and fully grinding the mixture for 4 hours; after grinding and mixing uniformly, adding a proper amount of deionized water and stirring for 2.5 hours, wherein the dosage of the deionized water is not less than 30 wt% of the total amount, and controlling the rotating speed of the stirrer to 150-;
(2) preparing a water-based flame retardant agent: adding deionized water with the total amount not less than 15 wt% into a stirrer, adding a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adjusting the rotation speed of the stirrer to be 120r/min, stirring for 1.5-1.8h, adding the hydrophilic colloid stabilizer, and continuously stirring for 1.0-1.2h to obtain a stable aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: mixing the aerogel sol and the aqueous flame retardant agent mixed solution, adding the mixture into a stirrer, adjusting the rotating speed of the stirrer to be 120-150r/min, stirring at normal temperature for at least 2h, supplementing deionized water during stirring until the fraction reaches a rated value, and fully stirring to obtain a uniform mixed solution; then adjusting the pH value of the mixed solution to be neutral (6.5-7.5) by using the hydrogen ion concentration buffer and maintaining the pH value; and curing the mixed solution with the adjusted and maintained pH value at normal temperature for 8-9h to obtain the required fire extinguishing agent product.
Example 3
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
as shown in the preparation flow chart of fig. 1, the preparation method of the water-based aerogel high-efficiency fire extinguishing agent according to the embodiment includes the following steps:
(1) preparing aerogel sol: firstly, carrying out surface modification on silicon dioxide aerogel powder, and carrying out heat treatment for 5 hours at the temperature of 200 ℃ under the condition of introducing clean nitrogen; then evenly mixing the mixture with a selected amount of template agent and fully grinding the mixture for 3 hours; after grinding and mixing uniformly, adding a proper amount of deionized water, stirring for 2.5 hours, wherein the dosage of the deionized water is not less than 25 wt% of the total amount, and controlling the rotating speed of the stirrer to be 150r/min so as to obtain aerogel sol for later use;
(2) preparing a water-based flame retardant agent: adding deionized water with the total amount not less than 15 wt% into a stirrer, adding a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adjusting the rotation speed of the stirrer to be 120r/min, stirring for 1.5-1.8h, adding the hydrophilic colloid stabilizer, and continuously stirring for 1.0-1.2h to obtain a stable aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: mixing the aerogel sol and the aqueous flame retardant agent mixed solution, adding the mixture into a stirrer, adjusting the rotating speed of the stirrer to be 120-150r/min, stirring at normal temperature for at least 2h, supplementing deionized water during stirring until the fraction reaches a rated value, and fully stirring to obtain a uniform mixed solution; then adjusting the pH value of the mixed solution to be neutral (6.5-7.5) by using the hydrogen ion concentration buffer and maintaining the pH value; and curing the mixed solution with the adjusted and maintained pH value at normal temperature for 8-9h to obtain the required fire extinguishing agent product.
Example 4
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
as shown in the preparation flow chart of fig. 1, the preparation method of the water-based aerogel high-efficiency fire extinguishing agent according to the embodiment includes the following steps:
(1) preparing aerogel sol: firstly, carrying out surface modification on silicon dioxide aerogel powder, and carrying out heat treatment for 3 hours at 220 ℃ under the condition of introducing clean nitrogen; then evenly mixing the mixture with a selected amount of template agent and fully grinding the mixture for 3 hours; after grinding and mixing uniformly, adding a proper amount of deionized water and stirring for 2 hours, wherein the use amount of the deionized water is not less than 30 wt% of the total amount, and controlling the rotating speed of the stirrer to 150-;
(2) preparing a water-based flame retardant agent: adding deionized water with the total amount not less than 15 wt% into a stirrer, adding a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adjusting the rotation speed of the stirrer to be 120r/min, stirring for 1.5-1.8h, adding the hydrophilic colloid stabilizer, and continuously stirring for 1.0-1.2h to obtain a stable aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: mixing the aerogel sol and the aqueous flame retardant agent mixed solution, adding the mixture into a stirrer, adjusting the rotating speed of the stirrer to 150-; then adjusting the pH value of the mixed solution to be neutral (6.5-7.5) by using the hydrogen ion concentration buffer and maintaining the pH value; and curing the mixed solution with the adjusted and maintained pH value at normal temperature for 8-9h to obtain the required fire extinguishing agent product.
Example 5
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
as shown in the preparation flow chart of fig. 1, the preparation method of the water-based aerogel high-efficiency fire extinguishing agent according to the embodiment includes the following steps:
(1) preparing aerogel sol: firstly, carrying out surface modification on silicon dioxide aerogel powder, and carrying out heat treatment for 3 hours at the temperature of 250 ℃ under the condition of introducing clean nitrogen; then evenly mixing the mixture with a selected amount of template agent and fully grinding the mixture for 3 hours; after grinding and mixing uniformly, adding a proper amount of deionized water and stirring for 2 hours, wherein the use amount of the deionized water is not less than 25 wt% of the total amount, and controlling the rotating speed of the stirrer to 150-;
(2) preparing a water-based flame retardant agent: adding deionized water with the total amount not less than 15 wt% into a stirrer, adding a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adjusting the rotation speed of the stirrer to be 120r/min, stirring for 1.5-1.8h, adding the hydrophilic colloid stabilizer, and continuously stirring for 1.0-1.2h to obtain a stable aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: mixing the aerogel sol and the aqueous flame retardant agent mixed solution, adding the mixture into a stirrer, adjusting the rotating speed of the stirrer to 150-; then adjusting the pH value of the mixed solution to be neutral (6.5-7.5) by using the hydrogen ion concentration buffer and maintaining the pH value; and curing the mixed solution with the adjusted and maintained pH value at normal temperature for 8-9h to obtain the required fire extinguishing agent product.
Example 6
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
as shown in the preparation flow chart of fig. 1, the preparation method of the water-based aerogel high-efficiency fire extinguishing agent according to the embodiment includes the following steps:
(1) preparing aerogel sol: firstly, carrying out surface modification on silicon dioxide aerogel powder, and carrying out heat treatment for 3 hours at the temperature of 250 ℃ under the condition of introducing clean nitrogen; then evenly mixing the mixture with a selected amount of template agent and fully grinding the mixture for 3 hours; after grinding and mixing uniformly, adding a proper amount of deionized water and stirring for 3 hours, wherein the use amount of the deionized water is not less than 25 wt% of the total amount, and controlling the rotating speed of the stirrer to 150-;
(2) preparing a water-based flame retardant agent: adding deionized water with the total amount not less than 15 wt% into a stirrer, adding a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adjusting the rotation speed of the stirrer to be 120r/min, stirring for 1.5-1.8h, adding the hydrophilic colloid stabilizer, and continuously stirring for 1.0-1.2h to obtain a stable aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: mixing the aerogel sol and the aqueous flame retardant agent mixed solution, adding the mixture into a stirrer, adjusting the rotating speed of the stirrer to 150-; then adjusting the pH value of the mixed solution to be neutral (6.5-7.5) by using the hydrogen ion concentration buffer and maintaining the pH value; and curing the mixed solution with the adjusted and maintained pH value at normal temperature for 8-9h to obtain the required fire extinguishing agent product.
Example 7
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
referring to the preparation flow chart shown in fig. 1, the preparation method of the water-based aerogel fire extinguishing agent in this example is the same as that in example 1.
Example 8
The water-based aerogel high-efficiency fire extinguishing agent comprises the following raw material components in percentage by mass based on the total amount of the raw materials for preparation:
referring to the preparation flow chart shown in fig. 1, the preparation method of the water-based aerogel fire extinguishing agent in this example is the same as that in example 1.
Comparative example 1-
The fire extinguishing agent of this comparative example was prepared in the same manner as in example 1 except that silica aerogel powder was used as it was without surface modification treatment, and the rest of the conditions were the same as in example 1.
Examples of the experiments
Fire fighting performance test
According to the publication of Mat rain (nano SiO)2The flow characteristics and effects of the adhesion-modified water mist fire extinguishing agent are tested under the test conditions of 2009, volume 28, pp 119-202) by using the fire extinguishing agent of example 1 and comparative example 1. The ignition time (average of 5 times) of the fire extinguishing agent impregnated into the wood strips of the fire extinguishing agent according to example 1 and comparative example 1 in direct contact with flames and the fire extinguishing time at a fire extinguishing agent flow rate of 0.027kg/s and a wood ignition time of 60s were measured, respectively. For comparison, table 1 also shows the results of the same test with water, see table 1.
TABLE 1 fire extinguishing Performance test results
| Test of | Ignition time(s) | Time of fire(s) |
| Example 1 | 372 | 15 |
| Comparative example 1 | 296 | 22 |
| Water (W) | 95 | 110 |
As can be seen from Table 1, compared with the scheme of the comparative example 1, the fire-fighting agent of the embodiment 1 of the invention has higher fire-fighting efficiency and better ignition prevention effect, namely better flame-retardant effect; compared with pure water, the fire extinguishing and fire retarding effects of the fire extinguishing agent are good in example 1 and the fire retarding effect of the fire extinguishing agent are good in comparative example 1.
The fire extinguishing agents prepared in examples 1 to 8 were subjected to fire extinguishing performance tests and compared with water. A wood board with the thickness of 1m multiplied by 1cm is selected to carry out a fire extinguishing experiment, straw with the thickness of about 1cm is laid on the surface of the wood board to be used as an ignition object, the ignition object is ignited for 30s, the fire is extinguished, the control time is the combustion time, the extinguishing time is the time required by each fire extinguishing agent to extinguish the fire, and the experimental data are shown in the following table 2.
TABLE 2 fire extinguishing agent Performance test results
As can be seen from the data in Table 2, the extinguishing time of examples 1-8 is less than 10 seconds, which is much faster than the extinguishing time of pure water, indicating that the extinguishing agent prepared by the present invention is highly effective.
The above examples are merely examples for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. The water-based aerogel high-efficiency fire extinguishing agent is characterized by comprising the following raw material components in percentage by mass based on the total amount of the preparation raw materials of the fire extinguishing agent:
2. the water-based aerogel high-efficiency fire extinguishing agent as claimed in claim 1, wherein the inorganic aerogel powder comprises at least one of silica, alumina, zirconia, silica-alumina binary hybrid, silica-zirconia binary hybrid and the like.
3. A water-based aerogel high efficiency fire extinguishing agent as claimed in claim 1 or 2, wherein the template agent comprises at least one of cetyltrimethyl ammonium bromide, dodecylbenzene sulfonic acid sodium or cetyltrimethyl ammonium chloride.
4. A water-based aerogel high efficiency fire extinguisher according to any of claims 1-3, characterized in that the phosphorus containing flame retardant comprises at least one of monoammonium phosphate, tris (2, 3-dibromopropyl) phosphate or thiophosphoric acid triisocyanate.
5. The water-based aerogel high efficiency fire extinguisher according to any of claims 1-4, characterized in that the nitrogen containing flame retardant comprises urea, ammonium pentaborate (NH)4B5O8·4H2O), ammonium hydrogen carbonate (NH)4HCO3) Or a mixture of at least two of melamine cyanurate.
6. The water-based aerogel high efficiency fire extinguisher according to any of the claims 1-5, characterized in that the hydrocolloid stabilizer comprises at least one of carbomer, alginate or carboxymethyl cellulose.
7. The water-based aerogel high efficiency fire extinguisher according to any of the claims 1-6, characterized in that the hydrogen ion concentration buffer comprises a mixture of at least two of sodium dihydrogen phosphate, dipotassium hydrogen phosphate, acetic acid, sodium acetate, ammonia water, ammonium chloride.
8. A method for preparing the water-based aerogel efficient fire extinguishing agent as defined in any one of claims 1 to 7, comprising the steps of:
(1) preparing aerogel sol: introducing nitrogen into a selected amount of aerogel powder at the temperature of 180-250 ℃ for surface modification heat treatment, adding a selected amount of the template agent, uniformly mixing and fully milling, and then adding water for fully stirring to obtain the required aerogel sol for later use;
(2) preparing a water-based flame retardant agent: mixing a selected amount of the phosphorus-containing flame retardant and the nitrogen-containing flame retardant, adding water, fully and uniformly mixing, then adding a selected amount of the hydrophilic colloid stabilizer, and uniformly mixing to obtain a required aqueous flame retardant agent mixed solution for later use;
(3) adjusting the pH value: fully and uniformly mixing the obtained aerogel sol and aqueous flame retardant agent mixed solution, and adding the hydrogen ion concentration buffering agent to adjust the pH value of the obtained mixed solution to be neutral;
(4) curing: and curing the obtained mixed material liquid at normal temperature to obtain the required fire extinguishing agent.
9. The method for preparing a water-based aerogel efficient fire extinguisher according to claim 8, characterized in that, in the step (1):
the treatment time of the surface modification heat treatment step of the aerogel powder is at least 3 h;
the treatment time of the grinding step is at least 3 h.
10. The preparation method of the water-based aerogel efficient fire extinguisher according to claim 8 or 9, characterized in that, in the step (4), the curing step has a treatment time of 8-9 h.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182063.5A CN112169241B (en) | 2020-10-29 | 2020-10-29 | Water-based aerogel efficient fire extinguishing agent and preparation method thereof |
| CA3200411A CA3200411A1 (en) | 2020-10-29 | 2021-05-20 | Water-based aerogel efficient fire-extinguishing agent and preparation method therefor |
| PCT/CN2021/094856 WO2022088654A1 (en) | 2020-10-29 | 2021-05-20 | Water-based aerogel efficient fire-extinguishing agent and preparation method therefor |
| NL2029260A NL2029260B1 (en) | 2020-10-29 | 2021-09-27 | Water-based aerogel efficient fire extinguishing agent and preparation method thereof |
| LU500753A LU500753B1 (en) | 2020-10-29 | 2021-10-19 | Water-based aerogel efficient fire extinguishing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011182063.5A CN112169241B (en) | 2020-10-29 | 2020-10-29 | Water-based aerogel efficient fire extinguishing agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN112169241A true CN112169241A (en) | 2021-01-05 |
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| CA (1) | CA3200411A1 (en) |
| LU (1) | LU500753B1 (en) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022088654A1 (en) * | 2020-10-29 | 2022-05-05 | 安华消防新材料科技（江苏）有限公司 | Water-based aerogel efficient fire-extinguishing agent and preparation method therefor |
| CN114602110A (en) * | 2022-03-07 | 2022-06-10 | 浙江浩泉消防科技有限公司 | Fire extinguishing agent and preparation method thereof |
| CN116020077A (en) * | 2021-10-25 | 2023-04-28 | 爱彼爱和新材料有限公司 | Aerogel water-based fire extinguishing agent composition, aerogel water-based fire extinguishing agent, and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114904200B (en) * | 2022-06-07 | 2023-04-07 | 应急管理部四川消防研究所 | Nano metal oxide-based composite hydrosol fire extinguishing agent for forest and grass fire suppression and preparation method thereof |
| CN115569342A (en) * | 2022-08-26 | 2023-01-06 | 广东自由能科技股份有限公司 | Production method of high-efficiency fire extinguisher feed liquid and prepared feed liquid |
| CN118286646A (en) * | 2024-04-07 | 2024-07-05 | 北京伟德爱科生物技术研究院有限公司 | Forest fire extinguishing agent and preparation method thereof |
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| WO2022088654A1 (en) * | 2020-10-29 | 2022-05-05 | 安华消防新材料科技（江苏）有限公司 | Water-based aerogel efficient fire-extinguishing agent and preparation method therefor |
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| CN116020077A (en) * | 2021-10-25 | 2023-04-28 | 爱彼爱和新材料有限公司 | Aerogel water-based fire extinguishing agent composition, aerogel water-based fire extinguishing agent, and preparation method and application thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022088654A1 (en) | 2022-05-05 |
| NL2029260B1 (en) | 2023-05-15 |
| CN112169241B (en) | 2023-01-17 |
| LU500753A1 (en) | 2022-04-19 |
| LU500753B1 (en) | 2022-10-17 |
| CA3200411A1 (en) | 2022-05-05 |
| NL2029260A (en) | 2023-02-27 |
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