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
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[0039] Example 1
[0040] Take 100 parts by weight of deionized water, silica aerogel 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 dispersion liquid. Then 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 were added to the prepared dispersion, and stirred for 30 minutes with an ordinary mixer at a stirring speed of 100 rpm to prepare a water-based solution. Extinguishing agent. The prepared water-based fire-extinguishing agent was used to put out the fire on the wood that burned for 5 minutes by the method of 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.
Example Embodiment
[0041] Example 2
[0042] Take 100 parts by weight of deionized water, silica aerogel powder (density 0.125g / cm 3 , the average particle size is 100 microns, thermal conductivity is 0.023W / mK) 15 parts, triethanolamine 0.1 parts are dispersed using a high-speed disperser, the rotating speed is 2000 rpm, and the stirring time is 30 minutes to prepare a dispersion liquid. Then 15 parts of silica sol with a silicon dioxide content of 30% and 0.1 part of dihexyl phthalate were added to the prepared dispersion, stirred with a common mixer for 30 minutes at a stirring speed of 100 rpm to prepare a water-based fire extinguishing agent . The prepared water-based fire extinguishing agent was used to extinguish the PP plastic that was fully burned for 5 minutes by the method 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.
Example Embodiment
[0043] Example 3
[0044] Take 100 parts by weight of deionized water, silica aerogel powder (density 0.105g / cm 3 , particle size 1-50 microns, thermal conductivity 0.023W / mK) 1 part, 0.5 part of triethanolamine, use a high-speed disperser to disperse, rotate speed 1000rpm, and stir for 30 minutes to prepare a dispersion. Then 20 parts of silica sol with a silicon dioxide content of 30% and 0.1 part of dibutyl phthalate were added to the prepared dispersion, and stirred for 35 minutes with a common mixer at a stirring speed of 100 rpm to prepare a water-based fire extinguishing agent. . The prepared water-based fire extinguishing agent was used to extinguish the PP plastic that was fully burned for 5 minutes by the method 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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