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Compounded latex retardant for preventing coal spontaneous combustion and preparation method thereof

A composite latex, coal spontaneous combustion technology, applied in chemical instruments and methods, dust prevention, mining equipment and other directions, can solve the problems of human health hazards, environmental protection, high cost, and achieve the effects of low price, good adhesion and low cost

Inactive Publication Date: 2012-03-28
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this inhibitor has good thermal stability and is not easy to be lost, it needs to use organic solvents such as aromatic hydrocarbons and aliphatic hydrocarbons, which has high cost and is not environmentally friendly when used; patent 201010103396. Vinyl acetate emulsion, polyvinyl acetal emulsion, high molecular weight polymer of high-strength starch glue, surfactants, inorganic inhibitors, flame retardants, etc., the inhibitors formed have good inhibitory effect and can be used in humid environment The medium performance is stable, but the polyvinyl acetal polymer used will decompose and release formaldehyde when heated, which will cause harm to human health when used in large quantities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 0.05 parts by weight of kaolin with a particle size of 200 mesh to 1 part by weight of 0.1 wt% KH550 silane coupling agent solution, and disperse by ultrasonic or stirring for 30 minutes to obtain organically modified kaolin; 0.1 parts by weight of hydroxyethyl Cellulose is dissolved in 99.9 parts by weight of water, stirred at 20°C to make a hydroxyethyl cellulose solution of 0.1 wt% by weight; 90 parts by weight of the prepared organic modified kaolin and 50 parts by weight of hydroxyethyl cellulose Parts by weight were respectively added to 80 parts by weight of polyacrylate emulsion, fully stirred, and then 0.5 parts by weight of diammonium hydrogen phosphate was added, and stirred evenly to obtain the clay / polymer composite latex inhibitor of the present invention.

Embodiment 2

[0020] Add 0.8 parts by weight of kaolin with a particle size of 40 mesh to 1 part by weight of KH550 silane coupling agent solution with a weight percentage of 10.0 wt%, and disperse by ultrasonic or stirring for 30 minutes to obtain organically modified kaolin; 10 parts by weight of hydroxyethyl Dissolve cellulose in 90 parts by weight of water, stir at 90°C to make a 10 wt% hydroxyethyl cellulose solution; prepare 10 parts by weight of organically modified kaolin and 1 part by weight of hydroxyethyl cellulose solution 20 parts by weight of polyacrylate emulsion, fully stirred, and then added 60 parts by weight of diammonium hydrogen phosphate, stirred evenly, to obtain the clay / polymer composite latex inhibitor of the present invention.

Embodiment 3

[0022] Add 0.5 parts by weight of kaolin with a particle size of 150 mesh to 1 part by weight of KH550 silane coupling agent solution with a weight percentage of 5.0 wt%, and disperse by ultrasonic or stirring for 30 minutes to obtain organically modified kaolin; 5 parts by weight of hydroxyethyl Cellulose was dissolved in 95 parts by weight of water, stirred at 50°C to make a 5.0 wt% hydroxyethyl cellulose solution; prepared organic modified kaolin 50 parts by weight and hydroxyethyl cellulose solution 10 Parts by weight were respectively added to 30 parts by weight of polyacrylate emulsion, fully stirred, and then 10 parts by weight of diammonium hydrogen phosphate was added, and stirred evenly to obtain the clay / polymer composite latex inhibitor of the present invention.

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Abstract

A compounded latex retardant for preventing coal spontaneous combustion belongs to the technical field of retardants, and comprises the following components by weight ratio: 20 to 80 polymer emulsion, 10 to 90 organic modified clay, and 0.5 to 60 retardant, as well as 1 to 50 dispersant in a concentration of 0.1 to 10wt%. The preparation method comprises the following steps: adding the clay into silane coupling agent solution; performing ultrasonic or stirring dispersion by 30mins; dissolving the dispersant into water of a certain weight ratio, and stirring under 20 to 90 DEG C to get a dispersant solution in a concentration of 0.1 to 10wt%; and adding the organic modified clay and the prepared dispersant solution into the polymer emulsion, fully stirring, adding the retardant, and stirring to achieve uniform concentration. The retardant provided by the invention can not corrode metal equipment during use, harmful gas the wastes can not be generated, no pollution is caused to coal mine environment, and adverse effects and side effects to human body are prevented. Therefore, the retardant is environmental-friendly.

Description

technical field [0001] The invention relates to a compound inhibitor for preventing spontaneous combustion of coal and a preparation method thereof, in particular to a clay / polymer composite latex type inhibitor for preventing spontaneous combustion of coal and a preparation method thereof, belonging to the technical field of inhibitors. Background technique [0002] The fire caused by coal spontaneous combustion not only seriously endangers the safe production of coal mines, but also causes the largest loss of coal resources, and releases a large amount of toxic and harmful gases, threatening people's lives and health. Compared with other major coal-producing countries in the world, my country has a large number of low-grade coal types, and a wide range and large number of spontaneous combustion mines. It is one of the countries with the highest coal spontaneous combustion rate in the world. Therefore, it is of great significance to take effective measures to prevent coal s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/06C09K3/00
Inventor 秦振平郭红霞钱鹏耿长乐闫乃清王忠元崔新宇高培清
Owner BEIJING UNIV OF TECH
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