Efficient and environment-friendly aqueous film-forming foam extinguishing agent and preparation method thereof

Abstract

The invention discloses an efficient and environment-friendly aqueous film-forming foam extinguishing agent and a preparation method thereof, and the extinguishing agent is composed of 0.5-5% of a fluorocarbon surfactant, 10-35% of a hydrocarbon surfactant, 0.1-1% of a foam stabilizer, 2-10% of a cosolvent, 1-5% of an anti-burning agent, 5-30% of an anti-freezing agent, 0.1-1% of a preservative and the balance of water. Te fluorocarbon surfactant is a perfluorinated branched short-chain anionic surfactant synthesized by taking an industrial cheap raw material hexafluoropropylene dipolymer as an initial raw material. The preparation method comprises the following steps: uniformly mixing the surfactant component A, the cosolvent, the foam stabilizer and the water of a compound system formed by mixing and stirring the two surfactants to form a component B, adding the component B into the continuously stirred component A, continuously stirring, and sequentially adding the anti-burning agent, the anti-freezing agent and the preservative into the mixed system of the component A and the component B. The fire extinguishing agent comprises a perfluorinated branched short-chain environment-friendly anion fluorocarbon surfactant, is low in toxicity and good in biodegradability, has excellent spreadability, burning resistance, fire extinguishing performance, stability and liquid separation performance, does not contain PFOS and is not prone to being enriched in the environment and living bodies, and therefore environmental pollution cannot be caused.

Description

technical field [0001] The invention belongs to the field of fire-fighting and fire-extinguishing materials, in particular to a foam fire-extinguishing agent, and more specifically to a high-efficiency and environment-friendly foam fire-extinguishing agent based on a perfluorinated branched short-chain fluorocarbon anion surfactant and a preparation method thereof. Background technique [0002] Aqueous film-forming foam fire extinguishing agent (AFFF), also known as "light water" foam fire extinguishing agent, is a high-efficiency fire extinguishing agent developed abroad in the 1960s. The aqueous film-forming foam solution uses fluorocarbon surfactant as the main raw material, and also includes hydrocarbon surfactant, foam stabilizer, antifreeze and other additives. With its high surface activity, AFFF can spread along the surface of the flammable liquid during the fire extinguishing process, and form a water film from the liquid separated from the foam to separate the foam...

AI Technical Summary

Problems solved by technology

At present, the aqueous film-forming foam fire extinguishing agent (AFFF) widely used in China is still a formula decades ago in developed countries, which has serious ecological destructive power and environmental pollution problems.

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