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Preparation method of coal mining closed filling material

A technology for filling materials and coal mines, which is applied in the field of preparation of closed filling materials for coal mines, can solve the problems of poor flame retardancy, poor mechanical properties and easy to be weathered, and achieves enhanced durability and mechanical properties, excellent heat resistance and The effect of flame retardancy

Inactive Publication Date: 2017-09-01
雷笑天
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide a method for preparing a closed filling material for coal mines in view of the defects of poor flame retardancy, poor mechanical properties and easy weathering of existing filling materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Weigh 1g of emulsifier OP-10 and 3g of sodium hydroxide into a beaker containing 200mL of water, stir and mix for 3 minutes, then add 30g of vinyl trimethoxysilane to the beaker, move the beaker into a digital display constant temperature measurement speed magnetic stirring In the vessel, stir and react for 70 minutes at a temperature of 70°C and a speed of 400r / min, then add 15 mL of 10% acetic acid solution with mass fraction to the beaker, stir and mix for 10 minutes to obtain an emulsion, and weigh 15 g of nano carbon black Add 5g of silane coupling agent KH-550 to the beaker, place the beaker in a water bath, control the temperature at 60℃, stir and react for 60min, then add 0.1g to the beaker Ammonium sulfate, 3mL thioglycolic acid and 8g cobalt acetate, heat up to 85℃, continue to stir and react for 2h, stop heating, filter the product to obtain filter residue, and weigh 800g sodium silicate, 100g sodium hydroxide and 100g nano silica Add 50g metakaolin, 10g silic...

example 2

[0025] Weigh 2g of sec-octylphenol polyoxyethylene ether and 4g of sodium hydroxide into a beaker containing 250mL of water, stir and mix for 4min, then add 35g of vinyl trimethoxysilane to the beaker, and move the beaker to the digital display constant temperature In a speed measuring magnetic stirrer, after stirring the reaction for 80 minutes at a temperature of 75°C and a rotation speed of 450r / min, add 18 mL of 10% acetic acid solution with mass fraction to the beaker, stir and mix for 13 minutes to obtain an emulsion, and weigh 18 g Nano carbon black was added to a beaker containing 90mL of water, and then 7g of silane coupling agent KH-560 was added to the beaker, and the beaker was placed in a water bath, the temperature was controlled at 650℃, and the reaction was stirred for 75 minutes, and then added to the beaker 0.2g of benzoyl peroxide, 4mL of thioglycolic acid and 10g of cobalt acetate, heated to 90°C, continued to stir and react for 2h, stopped heating, filtered ...

example 3

[0028] Weigh 3g lauryl alcohol polyoxyethylene ether and 5g sodium hydroxide into a beaker containing 300mL of water, stir and mix for 5 minutes, then add 40g vinyl trimethoxysilane to the beaker, and move the beaker into the digital display constant temperature magnetic force In the stirrer, stir the reaction for 90 minutes at a temperature of 80°C and a rotation speed of 500r / min, then add 20 mL of 10% acetic acid solution with mass fraction to the beaker, stir and mix for 15 minutes to obtain an emulsion, and weigh 20 g of nano carbon Black was added to a beaker containing 100mL of water, then 8g of silane coupling agent KH-560 was added to the beaker, the beaker was placed in a water bath, the temperature was controlled at 70℃, and the reaction was stirred for 90 minutes, then 0.3g was added to the beaker Azobisisobutyronitrile, 5mL thioglycolic acid and 12g cobalt acetate, heat up to 95℃, continue to stir and react for 3h, stop heating, filter the product to obtain filter r...

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Abstract

The invention discloses a preparation method of a coal mining closed filling material, and belongs to the technical field of sealing material preparation. The preparation method comprises the following steps: taking vinyl tri-methoxysilane as a raw material for reaction to obtain organic silicon resin; then after treating a coupling agent for carbon black, introducing sulfydryl and cobalt element, and catalyzing resin and carbon black for carbonization to form a carbon layer during burning so as to strengthen fire resistance; then ball-milling sodium silicate, metakaolin and the like; finally stirring and reacting with an accessory ingredient so as to obtain the coal mining closed filling material. The obtained filling material does not contain highly acidic toxic substances such as residual formaldehyde, cannot cause damage on constructors and underground environments, and simultaneously is good in material mechanics properties and excellent in material flame retardant property, so that the problems of smoking and spontaneous combustion caused by heat accumulation when a traditional filling material reacts are avoided, and the filling material has a wide application prospect.

Description

Technical field [0001] The invention discloses a method for preparing a closed filling material for coal mines, and belongs to the technical field of sealing material preparation. Background technique [0002] In the process of underground mining and excavation in coal mines, high-collapse areas, coal and rock cavities, various cracks, air leakage channels, and goafs are easy to become underground gas gushing channels and gathering areas, and the toxic and harmful gases generated by gas explosions caused by gas exceeding limit , High-temperature flames, and shock waves formed by high-pressure gas not only cause a large number of casualties, but also destroy wells and other facilities in serious cases. The most effective measure to control gas exceeding limit is to conduct gas drainage. There are many technologies for gas drainage, such as floor penetration borehole gas drainage technology, high-level gas drainage roadway drainage technology and high-level borehole gas drainage t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L71/02C08L97/00C08K13/06C08K9/04C08K9/06C08K3/04C08K3/34C08K3/36C08K5/17C08G77/20
Inventor 雷笑天王维孙冬
Owner 雷笑天
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