Water-based fire extinguishing agent and preparation method thereof

Abstract

The invention discloses a water-based fire extinguishing agent, and belongs to the technical field of fire extinguishing agents. The fire extinguishing agent contains the following components in parts by weight: 8-12 parts of diethylene glycol, 3-6 parts of ammonium dihydrogen phosphate, 2-6 parts of diethylene glycol monobutyl ether, 4-8 parts of a flame retardant, 2-5 parts of a foaming agent, 3-7 parts of lignin, 1-4 parts of hydroxypropyl methyl cellulose, 2-6 parts of a fluorocarbon surfactant, 1-3 parts of a stabilizer, 5-8 parts of enhanced fire extinguishing filler and 45-50 parts of water. The water-based fire extinguishing agent has an excellent fire extinguishing effect in a normal-temperature environment, and compared with a traditional low-temperature fire extinguishing agent, the fire extinguishing effect of the water-based fire extinguishing agent in a low-temperature environment is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agents, and in particular relates to a water-based fire extinguishing agent and a preparation method thereof. Background technique [0002] Fires are usually divided into six categories ABCDEF, where A category refers to solid material fires, B category refers to liquid or soluble solid substance fires, C category refers to gas fires, D category refers to metal fires, and E category refers to live fires, that is, objects are charged and burned Class F refers to cooking fires in cooking appliances. Therefore, according to the nature and characteristics of various fires, different types of fire extinguishing agents need to be selected. Fire extinguishing agents can be divided into foam, dry powder, halogenated alkanes, carbon dioxide, acid-base and water-based fire extinguishing agents. [0003] Among them, the water-based fire extinguishing agent is mainly composed of hydrocarbon surfac...

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Problems solved by technology

[0004] Because the water-based fire extinguishing agent contains a large amount of water, and the freezing point of water is relatively high, in a low-temperature environment, the water-based fire extinguishing agent will solidify and cannot be used. Because the water-based fire extinguishing agent is greatly affected by the environment, its scope of use is limited. For this One defect, people have developed a water-based fire extinguishing agent suitable for use in low temperature environments

[0005] The traditional low-temperature fire extinguishing agent is to lower the freezing point of the water-based fire extinguishing agent by adding ethylene glycol as an antifreeze or pour point depressant. There is a danger of explosion of combustibles when contacted with oxidizing agents

The freezing point of water can also be lowered by adding inorganic salts, but in order to achieve the desired effect, a large amount of inorganic salts need to be added. Although the addition of inorganic salts and ethylene glycol can lower the freezing point of water, as the storage temperature decreases, inorganic salts The solubility of the water-based fire extinguishing agent will also gradually decrease. At this time, the inorganic salt is easy to precipitate, which will reduce the stability of the system, make the water-based fire extinguishing agent gradually stratify, and affect its use effect.

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