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

By using a combination of hydrocarbon surfactants and modified organosilicon surfactants, along with xanthan gum compound solution, the environmental hazards and polar solvent damage problems of aqueous film-forming foam fire extinguishing agents are solved, achieving efficient, environmentally friendly fire extinguishing performance and fire resistance.

CN119587937BActive Publication Date: 2026-05-29CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2023-09-11
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing aqueous film-forming foam extinguishing agents contain perfluorooctane sulfonate (PFOS), which is harmful to the environment and is easily destroyed in polar solvents, leading to a decline in fire extinguishing performance. There is a need to develop a PFOS-free, environmentally friendly foam extinguishing agent with excellent fire extinguishing performance.

Method used

A combination of hydrocarbon surfactants, carboxyl-modified organosilicon surfactants, foam stabilizers, cosolvents, and water is used. The water solubility and surface activity are improved by modifying the organosilicon surfactants, and a compound solution of xanthan gum and component A is used as a foam stabilizer to enhance the stability and temperature-sensitive thermal response performance of the foam.

Benefits of technology

This invention achieves a fluorine-free, alcohol-resistant foam fire extinguishing agent that exhibits good flowability and foaming properties at room temperature, while transforming into a high-viscosity gel at high temperatures, thus improving fire extinguishing and fire resistance. It is also environmentally friendly, containing no fluorocarbon surfactants, thereby reducing environmental pollution.

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Abstract

The application relates to the technical field of fire extinguishing agents, and discloses a fluorine-free anti-solubility foam fire extinguishing agent and a preparation method thereof. The fluorine-free anti-solubility foam fire extinguishing agent contains a hydrocarbon surfactant, a carboxyl-modified organic silicon surfactant, a foam stabilizer, a cosolvent, water and a pH regulator. The carboxyl-modified organic silicon surfactant is obtained by modifying an organic silicon surfactant with maleic anhydride. The foam stabilizer contains xanthan gum and component A. The carboxyl-modified surfactant obtained by modifying the organic silicon surfactant has good surface activity and water solubility. The xanthan gum and component A (polyethylene oxide-polypropylene oxide-polyethylene oxide and the like) are compounded as the foam stabilizer, so that the foam stability and the anti-solubility are improved, and the temperature-sensitive-thermal response performance is also achieved. Under the joint action of the components, the fire extinguishing agent provided by the application has excellent fire extinguishing performance and can quickly extinguish non-polar fuels and polar fuels.
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