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Preparation method of composite foam gel fire-extinguishing material for coal mines

A composite foam and anti-fire extinguishing technology, which is applied in the direction of fire prevention equipment, etc., can solve the problems of short effective period of material, poor water retention performance of fire extinguishing materials, easy drying and cracking, etc., to achieve good water fixing performance, complete colloid fire extinguishing, and prevent cracking Effect

Inactive Publication Date: 2019-11-15
牟涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention: Aiming at the defects of poor water retention, easy drying and cracking in the current fire prevention materials, and the short effective period of the materials, a preparation of composite foam colloid fire prevention materials for coal mines is provided method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In parts by weight, weigh 40 parts of melamine, 20 parts of formaldehyde, 10 parts of ammonium polyphosphate, 1 part of polyvinyl alcohol, and 120 parts of deionized water, add formaldehyde to the deionized water, and stir at 100 r / min at room temperature 5min to obtain a formaldehyde solution, add melamine to the formaldehyde solution, add dropwise a sodium hydroxide solution with a mass concentration of 1% to adjust the pH to 8, stir and react at a speed of 200r / min in a water bath at 60°C for 40min, and obtain a melamine-formaldehyde resin preform Polymer, add polyvinyl alcohol to the remaining 1 / 3 deionized water, stir at 180r / min for 10 minutes at room temperature to obtain a polyvinyl alcohol solution, add ammonium polyphosphate to the polyvinyl alcohol solution, and place it in a high-speed emulsifying shear Cut at a speed of 2000r / min for 10min to obtain a dispersed emulsion, add the dispersed emulsion to the melamine formaldehyde resin prepolymer, add dropwise h...

Embodiment 2

[0045]In terms of parts by weight, weigh 50 parts of melamine, 25 parts of formaldehyde, 12 parts of ammonium polyphosphate, 2 parts of polyvinyl alcohol, and 150 parts of deionized water, add formaldehyde to the deionized water, and stir at a speed of 110 r / min at room temperature 8min to obtain a formaldehyde solution, add melamine to the formaldehyde solution, add dropwise a sodium hydroxide solution with a mass concentration of 1% to adjust the pH to 8, and stir and react at a speed of 220r / min in a water bath at 65°C for 50min to obtain a melamine-formaldehyde resin preform Polymer, add polyvinyl alcohol to the remaining 1 / 3 deionized water, stir at 190r / min for 12min at room temperature to obtain a polyvinyl alcohol solution, add ammonium polyphosphate to the polyvinyl alcohol solution, and place it in a high-speed emulsifying shear Cut at a speed of 2250r / min for 12min to obtain a dispersed emulsion. Add the dispersed emulsion to the melamine formaldehyde resin prepolyme...

Embodiment 3

[0047] In parts by weight, weigh 60 parts of melamine, 30 parts of formaldehyde, 15 parts of ammonium polyphosphate, 3 parts of polyvinyl alcohol, and 180 parts of deionized water, add formaldehyde to the deionized water, and stir at a speed of 120 r / min at room temperature After 10 minutes, formaldehyde solution was obtained. Add melamine into the formaldehyde solution, add dropwise sodium hydroxide solution with a mass concentration of 1% to adjust the pH to 9, and stir and react at a speed of 240r / min in a water bath at 70°C for 60 minutes to obtain a melamine-formaldehyde resin preform. Polymer, add polyvinyl alcohol to the remaining 1 / 3 deionized water, stir at 200r / min for 15 minutes at room temperature to obtain a polyvinyl alcohol solution, add ammonium polyphosphate to the polyvinyl alcohol solution, and place it in a high-speed emulsifying shear Cut at a speed of 2500r / min for 15min to obtain a dispersed emulsion. Add the dispersed emulsion to the melamine-formaldehyd...

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Abstract

The invention relates to a preparation method of a composite foam gel fire-extinguishing material for coal mines, and belongs to the technical field of fire-extinguishing materials. Carboxymethyl cellulose and polyacrylamide are added to prepare the composite foam gel fire-extinguishing material for coal mines. The carboxymethyl cellulose and polyacrylamide can form a gel at a certain temperature,the gel contains water, the water can lower the temperature of the fire zone when evaporated, the gel is attached to the surface of coal after reaching stability in order to form a dense film, the film can block the contact between coal and oxygen in order to blocking the oxidation of the coal, the gel can rapidly lower the temperature of the coal when used for the spontaneous combustion fire ofthe coal in order to wrap the coal, isolate oxygen and quickly extinguish the fire, and the leak stopping effect of the gel makes an air leaking channel rapidly plugged in order to prevent toxic and harmful gases from being released; and the gel has a good water fixing performance, and can fix water even at a high temperature, so the danger of water gas explosion is avoided.

Description

technical field [0001] The invention relates to a preparation method of a composite foam colloid fire-proofing material for coal mines, and belongs to the technical field of fire-fighting materials. Background technique [0002] Coal spontaneous combustion is an objective phenomenon existing in nature, but if it cannot be effectively controlled, it will seriously affect the healthy development of the coal industry. The spontaneous combustion of coal is the result of a long-term imbalance between the two processes of coal oxidation heat generation and heat dissipation to the environment. Therefore, factors related to these two processes will affect the spontaneous combustion of coal. In general, the influencing factors of coal spontaneous combustion can be divided into internal factors and external factors. The internal factors are firstly the type of coal, followed by the porosity of coal, and finally the influence of water. In addition, factors such as the type and content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/14A62D1/02A62D1/06
CPCA62D1/0071A62D1/06C09K21/14
Inventor 牟涛
Owner 牟涛
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