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A kind of fire extinguishing material for coal mine and preparation method thereof

A kind of fire extinguishing material and coal mine technology, applied in fire prevention equipment, etc., can solve the problems of not being suitable for large area filling, polluting underground air, endangering workers' health, etc., and achieves the effects of less water vapor generation, convenient material extraction, and outstanding colloidal uniformity

Active Publication Date: 2016-04-06
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But existing colloid fire prevention technology also exposes many problems in practical application, for example: ammonia gas is released in the colloid formation process, pollutes underground air, endangers worker's health; After colloid is formed, it is easy to delaminate, and the uniformity is poor; The cost of gel is relatively high. High, not suitable for large area filling, etc.

Method used

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  • A kind of fire extinguishing material for coal mine and preparation method thereof
  • A kind of fire extinguishing material for coal mine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Put 3 parts of acrylic acid in an ice bath, neutralize with sodium hydroxide to get PH = 6, then add 4 parts of acrylamide to form a monomer, and add 0.25% persulfuric acid in turn to account for the total mass of the monomer Potassium, N,N-methylenebisacrylamide accounting for 0.25% of the total mass of the monomer; raise the temperature of the water bath and react at 70°C for 7 hours, and after the reaction product is cooled, filter the reaction product and put it in a vacuum oven. Dried to constant weight at 50°C to obtain a salt-tolerant superabsorbent resin;

[0026] 2) Weigh 4g of salt-resistant superabsorbent resin and 40ml of tap water to mix, fully stir for about 10min and set aside;

[0027] 3) Mix 10g of attapulgite with 46ml of tap water, stir thoroughly for 10-50min, and proceed to the next reaction after the aggregate slurry is uniform;

[0028] 4) The two slurries obtained in step 2) and step 3) are fully mixed and stirred evenly to obtain the obtaine...

Embodiment 2

[0031] 1) Put 3 parts of acrylic acid in an ice bath, neutralize with sodium hydroxide to get PH = 6, then add 4 parts of acrylamide to form a monomer, and add 0.25% persulfuric acid in turn to account for the total mass of the monomer Potassium, N,N-methylenebisacrylamide accounting for 0.25% of the total mass of the monomer; raise the temperature of the water bath and react at 70°C for 7 hours, and after the reaction product is cooled, filter the reaction product and put it in a vacuum oven. Dried to constant weight at 50°C to obtain a salt-tolerant superabsorbent resin;

[0032] 2) Weigh 2g of salt-resistant superabsorbent resin and mix with 30ml of tap water, stir well for about 10min and set aside;

[0033] 3) Mix 15g of attapulgite with 53ml of tap water, stir thoroughly for 10-50min, and proceed to the next reaction after the aggregate slurry is uniform;

[0034] 4) Fully mix the two slurries obtained in step 2) and step 3) and stir evenly to obtain the required fire e...

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Abstract

The invention relates to extinguishing material for coal mine and a production method thereof and belongs to the field of coal mine materials for fire preventing and extinguishing. The extinguishing material is made by mixing well 5-15wt% of attapulgite, 1-5wt% of salt-resistant super-absorbent polymer and water. Preparation of the salt-resistant super-absorbent polymer includes: adding 3 parts of acrylic acid into an ice bath, neutralizing with sodium hydroxide, adding 4 parts of acrylamide to from a monomer, and sequentially adding potassium peroxodisulfate accounting for 0.25% of the total weight of the monomer and N, N-methylene bisacrylamide accounting for 0.25% of the total weight of the monomer; heating a water bath to 70 DEG C, allowing for reaction for 7h, and filtering and drying the cooled reaction product. Aggregate using the attapulgite as colloid is fine in suspendability and large in specific area, the obtained colloid is remarkably uniform and long in shelf life.

Description

technical field [0001] The invention belongs to the field of fire extinguishing materials for coal mines, and in particular relates to a fire extinguishing material for coal mines and a preparation method thereof. technical background [0002] my country's coal mines have complex conditions and harsh environments. Every year, various accidents will cause huge economic and property losses to the country. Among them, coal spontaneous combustion is a common phenomenon. In our country, mines that spontaneously combust are widespread and numerous, seriously threatening the personal safety of mines and miners. Spontaneous combustion of coal is a natural phenomenon that exists objectively. Under natural conditions, air enters the interior of the coal body along with the cracks in the coal body, and coal oxygen spontaneously recombines to release a large amount of heat. The heat is accumulated under certain heat storage conditions. When the accumulated heat When the needs of the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00
Inventor 索红莉陈立佳王鼎元田辉张腾郭艾东
Owner BEIJING UNIV OF TECH
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