PFOS-free efficient seawater-resistant aqueous film-forming foam extinguishing agent and preparation method thereof

Abstract

The invention discloses a PFOS-free efficient seawater-resistant aqueous film-forming foam extinguishing agent and a preparation method thereof. The PFOS-free efficient seawater-resistant aqueous film-forming foam extinguishing agent comprises the following components in parts by weight: 1%-2% of a first group of surfactants, 4%-10% of a second group of surfactants, 20%-30% of an organic auxiliary agent and the balance of water. The method comprises the following steps: adding a first group of surfactant, a second group of surfactant, a cosolvent and an antifreeze agent into a stirring kettle to form a component A; adding a thickening agent, a preservative and an anti-burning agent into water to form a component B; and mixing the component A and the component B, adding the balance of water, and stirring and mixing for 60-90 minutes at a constant temperature and a constant speed, so as to obtain the efficient seawater-resistant aqueous film-forming foam extinguishing agent without containing PFOS. The prepared aqueous film-forming foam extinguishing agent is good in surface activity, high in diffusion coefficient, good in film-forming property and excellent in fire extinguishing performance.

Description

technical field [0001] The invention relates to the field of fire extinguishing agents, in particular to a PFOS-free high-efficiency seawater-resistant aqueous film-forming foam fire extinguishing agent and a preparation method thereof. Background technique [0002] According to data from the Ministry of Emergency Management, in 2021, a total of 748,000 fires will be reported nationwide, with 1,987 deaths, 2,225 injuries and direct property losses of 6.75 billion yuan. , 24.1% and 28.4%. How to quickly and effectively extinguish fires and minimize losses has always been an important research topic. Since the 1960s, people have begun to pay attention to the research of aqueous film-forming foam fire extinguishing agent (AFFF), also known as "light water" foam fire extinguishing agent, which can form a water film on the fuel surface during the fire extinguishing process. The most commonly used foam extinguishing agent in institutions, it is also considered the most effective...

AI Technical Summary

Problems solved by technology

Then people began to study low-fluorine or fluorine-free AFFF, but the performance was not comparable to that of long-chain fluorocarbon compound AFFF

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