Low-fluorine environment-friendly type aqueous film-forming foam fire extinguishing agent and preparation method thereof

Abstract

The invention provides a low-fluorine environment-friendly type aqueous film-forming foam fire extinguishing agent and a preparation method thereof. The fire extinguishing agent is composed of the following components in percentage by weight: 1%-2% of a fluorocarbon surfactant, 10%-40% of a hydrocarbon surfactant, 1%-10% of a silicon-containing surfactant, 20%-30% of an organic solvent, 0.1%-1% of a foam stabilizer, 2%-8% of a burning-resisting agent, 0.1%-1% of a preservative and a proper amount of water. The preparation method of the fire extinguishing agent comprises the following steps: mixing and agitating the fluorocarbon surfactant with the organic solvent to form a component A; mixing the hydrocarbon surfactant with the silicon-containing surfactant and water to form a component B; uniformly mixing the burning-resisting agent, the foam stabilizer and the preservative to form a component C; adding the component B into the component A and slowly adding the component C into the component A; and agitating uniformly. According to the low-fluorine environment-friendly type aqueous film-forming foam fire extinguishing agent, the three surfactants are compounded so that the use amount of the fluorocarbon surfactant is reduced to be less than 2% and the low surface tension is still kept; and the cost of the aqueous film-forming foam fire extinguishing agent can be reduced and the damages to the environment caused by fluorine compounds can be reduced.

Description

Technical field [0001] The invention belongs to the field of fire extinguishing materials, and specifically relates to an aqueous film-forming foam fire extinguishing agent, and more specifically to an environmentally-friendly aqueous film-forming foam fire extinguishing agent with low fluorine content and a preparation method thereof. Background technique [0002] Aqueous Film Forming Foam (AFFF) fire extinguishing agent, also known as "light water" foam fire extinguishing agent, is an efficient fire extinguishing agent developed abroad in the 1960s. The aqueous film-forming foam solution uses fluorocarbon surfactants as the main raw material, and at the same time includes hydrocarbon surfactants, foam stabilizers, antifreeze agents and other additives. With its high surface activity, AFFF can spread around the surface of the flammable liquid during the fire extinguishing process, and the liquid separated from the foam forms a water film to separate the foam and the flammable li...

AI Technical Summary

Problems solved by technology

However, there are few studies on the compounding of fluorocarbon surfactants and silicon-containing surfactants. There are domestic and foreign reports on the compounding of fluorocarbon surfactants, hydrocarbon surfactants and silicon-containing surfactants. less

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