Aerogel material-containing high efficiency liquid composition extinguishing agent and its preparation method and use

An airgel and composition technology, applied in the direction of fire prevention equipment, etc., can solve problems such as secondary fire accidents, suffocation hazards of operators, flying dust, etc., to prevent the spread of flames, prevent the spread of heat, and block heat transfer Effect

Inactive Publication Date: 2017-01-11
苏州同玄新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of isolating oxygen to extinguish the fire will also cause suffocation hazards to operators, and the gas fire extinguishing agent needs to be stored under high pressure, which also has certain dangers; patents such as CN103170088A, CN104324476A, and CN101455887 disclose the preparation and use of dry powder fire extinguishing agents , the dry powder fire extinguishing agent is to spray ultra-fine fire extinguishing dry powder through pressurization, and it will have physical and chemical interactions with the flame to extinguish the fire.
This type of fire extinguishing system also has the risk of pressurized storage. At the same time, a large amount of dry powder sprayed out during the fire extinguishing process will easily cause dust to fly and pollute the surrounding environment, which increases the difficulty of cleaning after the fire extinguishing. The most liquid fire extinguishing agent What is commonly used is aerosol fire extinguishing agent, as patents such as publication number CN102225228A, CN 102626546A all disclose the formula and the preparation method of aerosol fire extinguishing agent, it is to utilize the large amount of gas and gas that discharges from the redox reaction of flame and fire extinguishing agent raw material to discharge Active particles to realize the combination of physical fire extinguishing and chemical fire extinguishing
However, the general redox reaction is an exothermic reaction, and the aerosol fire extinguishing process is also a process of releasing a large amount of heat, which is likely to cause a secondary fire accident. Therefore, it is necessary to add a condensation or heat dissipation system during the fire extinguishing process, resulting in heavy equipment, and complicated operation

Method used

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  • Aerogel material-containing high efficiency liquid composition extinguishing agent and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Get 100 parts of deionized water by weight, silica airgel powder (density 0.085g / cm 3 , average particle size 50 microns, thermal conductivity 0.025W / mK) 5 parts, sodium dodecyl sulfonate 0.5 parts, use high-speed disperser to disperse, rotating speed 1000rpm, stirring time is 30 minutes to prepare a dispersion liquid. Then add 10 parts of water glass with a modulus of 2.3 and a silica content of 30% and 0.1 part of polyethylene glycol 400 into the prepared dispersion, and stir for 30 minutes with a common mixer at a stirring speed of 100 rpm to prepare an aqueous solution. Extinguishing agent. The prepared water-based fire extinguishing agent is used to extinguish the fire of the wood burned for 5 minutes by air spraying. The fire extinguishing time is 10 seconds. Under the same conditions, other water-based fire extinguishing agents are used to extinguish the fire, and the fire extinguishing time is 30 seconds.

Embodiment 2

[0042] Get 100 parts of deionized water by weight, silica airgel powder (density 0.125g / cm 3 , average particle size 100 microns, thermal conductivity 0.023W / mK) 15 parts, triethanolamine 0.1 part, use high-speed disperser to disperse, rotating speed 2000rpm, stirring time is 30 minutes to prepare a dispersion liquid. Then add 15 parts of silica sol with a silica content of 30% and 0.1 part of dihexyl phthalate to the prepared dispersion, stir for 30 minutes with a common mixer at a stirring speed of 100 rpm, and prepare a water-based fire extinguishing agent . The prepared water-based fire extinguishing agent is used to extinguish the fire of the PP plastic that has been fully burned for 5 minutes by means of air spray. The fire extinguishing time is 15 seconds, and other water-based fire extinguishing agents are used for the same fire, and the fire extinguishing time is 32 seconds.

Embodiment 3

[0044] Get 100 parts of deionized water by weight, silica airgel powder (density 0.105g / cm 3 , particle size 1-50 microns, thermal conductivity 0.023W / mK) 1 part, triethanolamine 0.5 part, use high-speed disperser to disperse, rotating speed 1000rpm, stirring time is 30 minutes to prepare a dispersion liquid. Then add 20 parts of silica sol with a silica content of 30% and 0.1 part of dibutyl phthalate to the prepared dispersion, stir for 35 minutes with a common mixer at a stirring speed of 100 rpm, and prepare a water-based fire extinguishing agent . The prepared water-based fire extinguishing agent is used to extinguish the fire of the PP plastic that has been fully burned for 5 minutes by means of air spray. The fire extinguishing time is 25 seconds, and other water-based fire extinguishing agents are used for the same fire, and the fire extinguishing time is 32 seconds.

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Abstract

The invention discloses an aerogel material-containing high efficiency liquid composition extinguishing agent and its preparation method and use. The high efficiency liquid composition extinguishing agent comprises aerogel powder, water, a surfactant, a fire extinguishing enhancer and a stabilizing agent. The aerogel powder is used in the extinguishing agent so that in fire extinguishing, the aerogel powder and extinguishing agent produce interaction and the product well covers the surface of a substrate and can effectively obstruct heat transmission and prevent flame propagation and heat transfer. In fire extinguishing, the aqueous extinguishing agent system does not undergo a chemical reaction, does not produce heat and prevents secondary fire hazard. The liquid composition extinguishing agent utilizes a simple air-atomizing technology, is prepared through simple equipment and can be operated easily. The liquid composition extinguishing agent has extremely low organic component content, can effectively control organic matter release and combustion in fire extinguishing, does not produce harmful gas and does not release powder.

Description

technical field [0001] The invention relates to a fire extinguishing agent, in particular to a high-efficiency liquid composition fire extinguishing agent containing an airgel material, its preparation method and application, and belongs to the field of liquid fire extinguishing agents. Background technique [0002] Fire is currently one of the biggest disasters threatening the loss of people's lives and property. With the improvement of productivity and living standards, the rapid growth of urban population density has greatly increased the risk of fires. The occurrence of some vicious fires not only caused huge casualties and property losses, but also created a lot of panic and confusion. . On the one hand, fire control needs to be contained from the source, and the safety and flame retardancy of buildings and devices should be strengthened, so as to reduce or avoid the occurrence of fire; stage; secondly, having good means of controlling and extinguishing the fire as it...

Claims

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Application Information

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IPC IPC(8): A62D1/00
Inventor 张学同张尚权王锦
Owner 苏州同玄新材料有限公司
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