A fluorine-free antisolvent foam extinguishing agent and a method for preparing the same

Abstract

This invention belongs to the field of fire extinguishing agent technology, specifically relating to a fluorine-free, alcohol-resistant foam fire extinguishing agent and its preparation method. This invention aims to solve the problem of poor effectiveness of existing fluorine-free foam fire extinguishing agents in extinguishing fires involving polar organic compounds. This invention prepares a main surfactant by mixing lauryl alcohol polyoxyethylene ether and polyethylene glycol, and then mixes it with an auxiliary surfactant composed of an addition copolymer of isooctanol and nonylphenol to obtain a compound surfactant. A fluorine-free film-forming polymer is prepared by random copolymerization of hydrophilic monomers, hydrophobic monomers, and functional monomers. The compound surfactant, the fluorine-free film-forming polymer, the solvent, and the film-forming agent are mixed and then subjected to a defoaming post-treatment to obtain the fluorine-free, alcohol-resistant foam fire extinguishing agent. The fire extinguishing agent product prepared by this invention, while being fluorine-free, possesses excellent solvent resistance and exhibits good effectiveness in extinguishing fires involving polar organic compounds.

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