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High efficiency hydroxide/oxide aerosol gel extinguishant
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A hydroxide, sol-gel technology, used in fire protection equipment and other directions, can solve problems such as unacceptable fire extinguishing systems
Inactive Publication Date: 2011-02-09
ONID TECH SHANGHAI CORP
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Experimental program
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Effect test
Embodiment 1
[0036] Embodiment 1. The fire extinguishing experiment of single (hydroxide) oxide sol-gel:
[0037] 1. After dissolving and diluting with titaniumsulfate, the concentration is 22.0%, with ammonia water (NH 4 OH) is adjusted to PH=7.2 to produce titanium hydroxide, after washing and filtering with water, the titanium hydroxide filter cake is dispersed in water, and an appropriate amount of oxidant hydrogenperoxide (H 2 o 2 ), and after heating at a temperature of 70°C for 38 hours, the formed metal oxide photocatalyst titanium dioxide (TiO 2 ) sol-gel aqueous solution, with visible light photocatalyst properties. The prepared titanium oxide sol is diluted to a 0.5% aqueous solution, and the sol can be sprayed into a fire with a water gun to extinguish the fire.
[0038] 2. After the aluminum chloride is dissolved and diluted, the concentration is 10.0%. 4 OH) is adjusted to PH=5.5 to produce aluminum hydroxide. After washing and filtering with water, the obtained aluminu...
Embodiment 2
[0045] Embodiment 2. The fire extinguishing experiment of mixed oxide or hydroxide sol
[0046] In this fire extinguishing experiment, mixed oxides or hydroxide sols were used to carry out water gun fire extinguishing experiments respectively, and the synthesis method of oxides or hydroxide sols is shown in Example 1.
[0047] Fire extinguishing time comparison table 2*
[0053] Fire extinguishing time comparison table 3*
[0054] Organic solvents
[0055] It can be seen from Table 3 that the fire extinguishing effect of titanium dioxide sol on organic solvents is very good.
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Abstract
The high efficiency hydroxide / oxidesol-gel extinguishant is water soluble extinguishant ppdwi metalhydroxide / oxide and through a dispersing process or a chemical process and may be of one kind of hydroxide / oxide or be the mixture of several kinds of hydroxide / oxide in any ratio. There may be also some salt and / or surfactant added into the extinguishant for raised extinguishing performance. The hydroxide / oxide sol-gel extinguishant may be prepared into superfine powder, which may be used in powder extinguishing agent, water fire extinguishing system, water spraying fire protectionsystem, water mist system water film foam fire extinguishing system, etc. The hydroxide / oxide sol-gel extinguishant is environment friendly, non-toxic and high in efficiency, can cut off burning chain and save water and may be used wide for extinguishing.
Description
technical field [0001] The invention belongs to the technical field of fire protection, and relates to a fire extinguishing agent and its application, in particular to an oxide and hydroxide aqueous sol-gel fire extinguishing agent and its application. Background technique [0002] Fire is a frequent disaster in today's society, often causing huge losses of life and property. How to extinguish fires quickly, save lives as much as possible, and reduce economic losses has become a matter of great concern to the people and the government. [0003] Common fire extinguishing agents are generally water fire extinguishing agent, foam fire extinguishing agent, dry powder fire extinguishing agent, aerosol fire extinguishing agent, water mist fire extinguishing agent, etc., and each category can be subdivided into multiple items. But no matter how different the types are, the principle is to isolate the combustionaccelerant, reduce the ignition point, cut off the combustion chain (i...
Claims
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Application Information
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