Nanoparticle-stabilized fire-fighting foams

By combining surface-modified silica nanoparticles with organic solvents, surfactants and biopolymers, silicon-free, fluorine-free and alcohol-free fire-fighting foam concentrates were prepared, solving the problem of poor performance of fluorine-free foams in polar solvent fuel fires, and achieving efficient and stable fire extinguishing effects.

CN120379730APending Publication Date: 2025-07-25PERIMETER SOLUTIONS LP
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Patent Information

Application Number
CN202380063153.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-09-02
Filing Date
2023-09-01
Publication Date
2025-07-25

AI Technical Summary

Technical Problem

Existing fluorine-free firefighting foams do not perform well in fuel fires with polar solvents, and traditional foams may contain toxic silicon-based surfactants or require alcohol components, affecting foaming performance and stability.

Method used

Silicon-free, fluorine-free, alcohol-free fire foam concentrates were prepared by combining surface-modified silica nanoparticles with organic solvents, surfactants, biopolymers and alcohols, and surface-modified nanoparticles were prepared by combining silane group compounds and graft polymers.

Benefits of technology

It improves the resistance of foam to polar solvents, enhances foaming performance and stability, meets fire testing standards in different water sources, and achieves a non-toxic and alcohol-free high-efficiency fire extinguishing effect.

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Abstract

The present invention relates generally to nanoparticle-stabilized fire-fighting foam concentrates, fire-fighting foam solutions, and fire-fighting foams prepared from the concentrates or solutions of the present invention that contain one or more silica nanoparticles (e.g., silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, silica nanoparticles, surface modified silica nanoparticles) and any one or all of one or more components selected from the group consisting of one or more organic solvents, one or more surfactants, one or more biopolymers, and one or more alcohols. The invention also relates to a method for increasing the resistance of fire-fighting foams to polar solvents. The present invention also relates to methods of making fire foam concentrates comprising silica nanoparticles (e.g., surface-modified silica nanoparticles).
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