Aqueous film-forming foam fire extinguishing agent and preparation method thereof

Abstract

The invention relates to the technical field of fire extinguishing agent preparation, in particular to an aqueous film-forming foam fire extinguishing agent and a preparation method thereof, and is characterized in that the aqueous film-forming foam fire extinguishing agent comprises the following components in percentage by weight: 5-15% of a combined hydrocarbon surfactant, 5-20% of a PFOS(Perfluorooctane sulfonates)-free hydrocarbon surfactant, 15-25% of a foaming agent, 0.3-0.9% of protection colloid, 5-70% of urea, 5%-8% of a foam stabilizer, 5%-15% of an anti-freezing agent, 3%-5% of a solubilizer, 3%-10% of a flame retardant and 20%-40% of water. According to the present invention, the PFOS(Perfluorooctane sulfonates)-free fluorocarbon surfactant is used, and the fire extinguishing agent can be self-degraded in a certain period, such that the high environmental protection property is provided, the environmental pollution is significantly reduced, and the excellent performance is provided, and the product obtained through the preparation method has characteristics of uniform mixing. The raw material proportioning accuracy is high, and the phenomenon of aggregation and caking is avoided during mixing and stirring.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agent preparation, in particular to an aqueous film-forming foam fire extinguishing agent and a preparation method thereof. Background technique [0002] Aqueous film-forming foam fire extinguishing agent, also known as "light water" foam fire extinguishing agent, has the best fire extinguishing effect due to its double fire extinguishing effect of water film-forming and foam. And because most of the water in the aqueous film-forming foam fire extinguishing agent is water, it is an ideal substitute for halon fire extinguishing agent in the international "halon phase-out action", and has become a fire extinguishing agent that has been developed internationally. [0003] Aqueous film-forming foam fire extinguishing agent (AFFF for short) is a foam fire extinguishing agent that is based on hydrocarbon surfactants and fluorocarbon surfactants and can form a layer of water film on the surfac...

AI Technical Summary

Problems solved by technology

[0005] The fluorocarbon surfactant used in the existing aqueous film-forming foam fire extinguishing agent has extremely strong persistence, which can ensure the high stability of the fire extinguishing agent in many environments; but the degradation of this fluorocarbon surfactant The performance is extremely poor, and it is an organic pollutant that is relatively difficult to decompose, and it has great pollution to the environment. When the aqueous film-forming foam fire extinguishing agent is prepared, the existing preparation method has low stirring efficiency in the process of mixing and stirring materials. The expected mixing effect is often not achieved

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