ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof

Abstract

The invention discloses an ABC superfine dry powder anti-reburning fire extinguishing agent. The fire extinguishing agent comprises the following components in percentage by weight: 85-90% of monoammonium phosphate, 1-2% of mica, 2.9-8.8% of silicon dioxide, 2-3% of ammonium sulfate, 2-3% of hydrogen-containing silicone oil, and 0.1-0.2% of fluorocarbon. The fire extinguishing agent is fast in fire extinguishing response, is good in powder diffusing performance, is easily suspended in burning space to form stable aerosol, is fast in heated decomposition, is quick in endothermic reaction, has strong capacity of capturing free radicals, has largely improved fire extinguishing efficiency. Moreover, the fire extinguishing agent is good in water repellency, is strong in flowing property, is strong in electrical insulating property and caking resistance, is low in corrosion, and is not easy to cake. The fire extinguishing agent can be preserved for a long time in a sealed container filled with nitrogen and argon. Because silicon dioxide, mica and ammonium sulfate are low in cost and can be easily purchased, the fire extinguishing agent can be conveniently produced in large scale. The fire extinguishing agent is simple in preparation process, causes no harm to humans, animals and the environment, and after the fire is extinguished, the environment is easy to clean and corrosion of equipment is low.

Description

technical field [0001] The invention relates to the field of powder fire extinguishing agents, in particular to an ABC superfine dry powder anti-resurgence fire extinguishing agent and a preparation method thereof. Background technique [0002] Halon 1211 and 1301 fire extinguishing agents are bromofluorocarbons, which are found by American scientists to have a huge destructive effect on the atmospheric ozone layer and are an important factor causing the ozone hole. In 2005, the Chinese government promised to stop the use of 1211 halon fire extinguishing agent, and in 2010 to stop the production of 1301 halon fire extinguishing agent. [0003] Commonly used ammonium phosphate ordinary dry powder fire extinguishing agent, because the particle size of the dry powder is large, the number of particles smaller than the critical reaction particle size is small, it is not easy to suspend in the fire area, the fire extinguishing reaction speed is slow, the efficiency is low, and the...

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Problems solved by technology

[0003] Commonly used ammonium phosphate ordinary dry powder fire extinguishing agent, because the particle size of the dry powder is large, the number of particles smaller than the critical reaction particle size is small, it is not easy to suspend in the fire area, the fire extinguishing reaction speed is slow, the efficiency is low, and the dosage is large. Therefore, research on cleaning, Efficient, environmentally friendly alternatives to new fire extinguishing agents are urgent

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