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Filmforming foam extinguishant with low viscosity fluid and anti water dissolved

A foam fire extinguishing agent and low-viscosity technology, applied in fire prevention equipment, etc., can solve the problems of high viscosity, limited dosage, and high cost of aqueous solution, and achieve the effects of good compatibility, simple production process, and reduced viscosity and cost

Inactive Publication Date: 2004-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing anti-solvent water film-forming foam fire extinguishing agents at home and abroad generally add xanthan gum macromolecule to common water film-forming foam fire extinguishing agents, but the aqueous solution viscosity of xanthan gum polymer itself is large, so adding it to ordinary water When the film-forming foam fire extinguishing agent is used, the viscosity of the system increases. Although it has high shear stress resistance and pseudoplastic rheological properties, the viscosity is very high when the temperature is low and / or when it is still, and its dosage is limited. higher cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment one: take C respectively 8 -C 10 Alkyl polyglucoside 10.0Kg, perfluoroalkane sulfonate 3.2Kg to form mixture A, propylene glycol butyl ether 5.5Kg, anti-alcohol polymer compound 0.4Kg and water 75.0Kg to form mixture B, add B to A and stir Evenly into a homogeneous solution, it is the product of the present invention.

[0009] C in this example 8 -C 10 Alkyl polyglycosides can be replaced by C 12 -C 16 Propyl Betaine or C 12 -C 16 DMAO or C 8 -C 12 Sodium alkyl sulfate; propylene glycol butyl ether can be replaced by ethylene glycol butyl ether; perfluoroalkyl sulfonate can be replaced by perfluoroalkyl betaine or perfluoropolyoxypropylene quaternary ammonium salt or perfluoroalkyl sulfate Salt.

Embodiment 2

[0010] Embodiment two: in addition to the five components described in the above-mentioned implementation, also contain ethylene glycol and urea, their weight ratio ranges are respectively 0.5-5, 3-18, 2-8, 0.2-2, 50-80, 2-10 and 2-10. During preparation, add 6.5Kg of ethylene glycol and 4.5Kg of urea to the fire extinguishing agent prepared in Example 1, and stir to form a homogeneous solution.

[0011] Ethylene glycol in the present embodiment can use diethylene glycol or glycerol or propylene glycol instead.

Embodiment 3

[0012] Embodiment three: in addition to the seven components of the above-mentioned embodiment two, potassium dihydrogen phosphate and disodium hydrogen phosphate buffer solution, preservatives such as sodium benzoate can also be increased, and the weight ratio ranges of these nine components are respectively 0.5-5, 3-18, 2-8, 0.2-2, 50-80, 2-10, 2-10, 1-5, and 0.1-1. During preparation, in addition to the seven components in Example 2, add 3.0 Kg of potassium dihydrogen phosphate and disodium hydrogen phosphate buffer solution, stir evenly, and finally add preservatives such as sodium benzoate 0.2 Kg, and stir to form a homogeneous solution .

[0013] The concentration of potassium dihydrogen phosphate and disodium hydrogen phosphate buffer solution in this embodiment is 0.2 mol / l.

[0014] The anti-alcohol polymer compound in the present invention is prepared from xanthan gum and peach gum or guar gum or chitosan or cellulose ether or modified starch in a weight ratio of 1:...

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PUM

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Abstract

A water-insoluble low-viscosity filming foam-type fire-extinguishing chemical contains perfluoroalkyl betaine or perfluoropolyoxypropene quaternary ammonium salt or perfluoroalkyl sulfonate or perfluoroalkyl sulfate, C12-C16 propylbetaine or C12-C16 ammonium dimethyloxide or C8-C12 sodium alkylsulfate or CX-C10 ammonium dimethyloxide or C8-C12 sodium alkylsulfate or CX-C10 alkyl polyglucoside, ethanediol butylether or propanediol butylether, alcohol-resistant high-molecular matches and water. Its advantage is no environmental pollution.

Description

technical field [0001] The invention relates to a fire extinguishing agent, in particular to a low-viscosity anti-solvent water film-forming foam fire extinguishing agent. Background technique [0002] With the enhancement of people's awareness of environmental protection, the application range of ethanol gasoline and methanol gasoline will become more and more extensive. Since a certain amount of polar solvent needs to be added, ordinary foam fire extinguishing agents cannot be used to extinguish fires, but only solvent-resistant fire extinguishers can be used. agent. Most of the polar liquids have strong hydrophilicity, so they have a strong dehydration effect on the foam, which destroys the outer wall of the foam. When the cell wall becomes thinner, the foam will burst due to external force (hydrophilic effect). In order to resist the dehydration damage of polar liquids, xanthan gum is usually added to the aqueous film-forming fire extinguishing agent to form a film on ...

Claims

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Application Information

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IPC IPC(8): A62D1/02
Inventor 俞雪兴谈龙妹吴京峰
Owner CHINA PETROLEUM & CHEM CORP
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