Environment-friendly aqueous film forming foam fire extinguishing agent and preparation method thereof

A foam fire extinguishing agent, water film forming technology, applied in fire protection equipment and other directions, can solve the problems of no improvement of product freezing point, water pollution, poor cold resistance, etc., and achieve the effect of strong product spreading ability, low freezing point temperature, and rapid fire extinguishing performance.

Inactive Publication Date: 2018-11-23
JUHUA GROUP TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents all need to add some high-boiling point organic solvents such as ethylene glycol or ethylene glycol butyl ether or propylene glycol butyl ether. Such solvents are not easy to decompose when they enter the water body, causing water pollution.
Patent CN2015108327035 involves not adding an organic solvent as an antifreeze, but its product has poor cold resistance, and there will be a freezing point at around -5°C; although the patent uses hydroxyalkyl cellulose or hydroxyalkyl cellulose salt, but The above-mentioned cellulose is mainly used as a water-retaining material, which does not improve the freezing point of the product

Method used

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  • Environment-friendly aqueous film forming foam fire extinguishing agent and preparation method thereof
  • Environment-friendly aqueous film forming foam fire extinguishing agent and preparation method thereof
  • Environment-friendly aqueous film forming foam fire extinguishing agent and preparation method thereof

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preparation example Construction

[0018] A preparation method of an environment-friendly aqueous film-forming foam fire extinguishing agent, comprising the steps of:

[0019] Add deionized water to the raw materials according to the formula ratio, start the mixer, add water-soluble ammonium polyphosphate and urea to dissolve them all, add xanthan gum, dissolve them all, stir for 30 minutes, continue stirring and add cocamidopropyl betaine and APG After fully stirring for 1 hour, add modified nanocellulose sodium salt, perfluorohexylsulfonyl betaine, amphoteric fluorinated acrylate emulsion and buffer in sequence, and stir for 30-60 minutes. Adjust the pH value of the material to 7.0-7.5 and stop. Stirring, and then settling, filtering and packaging to obtain the concentrated liquid of the environment-friendly aqueous film-forming foam fire extinguishing agent. The dosage ratio of perfluorohexylsulfonyl betaine to amphoteric fluorinated acrylate emulsion is 1:6.5.

[0020] 1. The concentrated solution of the e...

Embodiment 1

[0023] a. Add 44.5kg of water into the 500L reactor, start stirring, set the stirring speed to 100rpm, then slowly add 10kg of water-soluble ammonium polyphosphate and 5kg of urea into the reactor.

[0024] b. After fully dissolving, slowly add 0.7kg xanthan gum into the reaction kettle.

[0025] c. After the xanthan gum is fully dissolved and mixed, add 10kg of cocamidopropyl betaine and 10kg of APG.

[0026] d. After fully dissolving, slowly add 0.75 kg of perfluorohexylsulfonyl betaine, 5 kg of amphoteric fluorinated acrylate emulsion and 12 kg of modified nanocellulose sodium salt successively.

[0027] e. After fully mixing and dissolving, add an appropriate amount of sodium bicarbonate to adjust the pH value of the material to 7.0-7.5, stop stirring, and then settle, filter and pack.

Embodiment 2

[0029] a. Add 40kg of water into the 500L reactor, start stirring, set the stirring speed to 100rpm, then slowly add 10kg of water-soluble ammonium polyphosphate, 5kg of urea and 4.5kg of sodium dodecylsulfonate into the reactor.

[0030] b. After fully dissolving, slowly add 0.7kg xanthan gum into the reaction kettle.

[0031] c. After the xanthan gum is fully dissolved and mixed, add 10kg of cocamidopropyl betaine and 10kg of APG.

[0032] d. After fully dissolving, slowly add 0.75 kg of perfluorohexylsulfonyl betaine, 5 kg of amphoteric fluorinated acrylate emulsion and 12 kg of modified nanocellulose sodium salt successively.

[0033] e. After fully mixing and dissolving, add an appropriate amount of sodium bicarbonate to adjust the pH value of the material to 7.0-7.5, stop stirring, and then settle, filter and pack.

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Abstract

The invention discloses an environment-friendly aqueous film forming foam fire extinguishing agent and a preparation method thereof. The fire extinguishing agent comprises, by weight part, 5-10 partsof water-soluble ammonium polyphosphate, 5-10 parts of urea, 0.5-1 part of xanthan gum, 2-10 parts of cocoalkanoylamido propyl betaine, 2-10 parts of APG, 10-15 parts of modified nano-crystalline cellulose, 0.25-1.5 parts of perfluorohexyl sulfonyl betaine, 2-6 parts of amphiprotic fluorinated acrylate emulsion, 2-5 parts of a buffering agent and 35-75 parts of deionized water. The product manufactured through the method includes no high-melting-point organic solvent or non-ionic surface active agent hard to degrade, the use level of an alkyl fluoride betaine surface active agent is greatly reduced, the pollution damage to the environment is relieved, the foam expansion is high, the fire extinguishing time is short, the anti-burning time is long, and foam is stable.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agents, and in particular relates to an environment-friendly aqueous film-forming foam fire extinguishing agent and a preparation method thereof. Background technique [0002] In recent years, the requirements for fire extinguishing agents at home and abroad have gradually become more environmentally friendly, multi-functional, and high-efficiency. Dry powder fire extinguishing agents have obvious limitations. They cannot extinguish large-scale oil and alcohol fires, and they do not have the ability to resist reflashing, which is harmful to humans and the environment. In recent years, there have been many research reports on the use of fluorine-containing surfactants in aqueous film-forming foam fire extinguishing agents. The core component of aqueous film-forming foam fire extinguishing agents is fluorocarbon surfactants, supplemented with hydrocarbon surfactants and foam stabilizers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
CPCA62D1/0042A62D1/0071A62D1/0085
Inventor 袁大想李建杨建荣曹毅
Owner JUHUA GROUP TECH CENT
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