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Soft-film flame-retardant dust suppressant for coal and preparation method of flame-retardant dust suppressant

A dust suppressant, coal technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of easy fragmentation, high cost, loss of dust suppression effect, etc., to prevent coal spontaneous combustion, strong wind erosion resistance and resistance Vibration, the effect of reducing dust pollution and spontaneous combustion

Active Publication Date: 2019-08-23
内蒙古涵天科技发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the polymer flame retardant and dust suppressants currently on the market are "hard-shell type". The cured layer of the product is relatively brittle after spraying, and it is easily broken after being subjected to vibration and wind during transportation, thus losing the dust suppression effect, and its cost is relatively high.

Method used

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  • Soft-film flame-retardant dust suppressant for coal and preparation method of flame-retardant dust suppressant
  • Soft-film flame-retardant dust suppressant for coal and preparation method of flame-retardant dust suppressant
  • Soft-film flame-retardant dust suppressant for coal and preparation method of flame-retardant dust suppressant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A preparation method of a soft film type coal flame retardant and dust suppressant, comprising the following steps:

[0046] (1) Add 3.0g of epoxy resin (E51), 8.0g of butyl acrylate, 1.0g of methacrylic acid, 0.60g of phytic acid and 0.010g of tetrabutylammonium bromide into the flask, and react in an oil bath at 120°C After 3h, the intermediate was obtained and taken out for later use.

[0047] (2) 0.60g methacrylic acid, 7.5g butyl acrylate, 2.0g styrene, 1.0g alkylphenol ether sulfosuccinate sodium salt, 0.70g polyoxyethylene octylphenol ether-10, 0.11g over Potassium sulfate, 0.064g sodium bisulfite, 0.85g sodium bicarbonate, and 20g deionized water were added to the reactor, and reacted in a water bath at 80°C for 30 minutes to obtain a seed emulsion;

[0048]0.85g of sodium bicarbonate, 38g of deionized water, 0.05g of potassium persulfate and 0.032g of sodium bisulfite were used to prepare an initiator solution.

[0049] (3) Add 15g butyl acrylate, 4g styrene,...

Embodiment 2

[0053] A preparation method of a soft film type coal flame retardant and dust suppressant, comprising the following steps:

[0054] (1) Add 2.5g of epoxy resin (E44), 9.0g of butyl acrylate, 1.0g of methyl methacrylate, 0.80g of phytic acid and 0.030g of tetrabutylammonium chloride into the flask, and put them in a 115°C oil bath The reaction was carried out for 2.5h to obtain an intermediate, which was taken out for later use.

[0055] (2) Add 0.50g methacrylic acid, 7.5g butyl acrylate, 2.0g styrene, 1.5g sodium lauryl sulfate, 0.90g polyoxyethylene octylphenol ether-10, 0.11g potassium persulfate, 0.064g Sodium bisulfite, 0.60 g of sodium bicarbonate and 25 g of deionized water were added into the reactor, and reacted in a water bath at 80° C. for 25 min to prepare a seed emulsion.

[0056] 0.60 g of sodium bicarbonate, 45 g of deionized water, 0.05 g of potassium persulfate and 0.032 g of sodium bisulfite were prepared as an initiator solution.

[0057] (3) Add 15g butyl...

Embodiment 3

[0061] A preparation method of a soft film type coal flame retardant and dust suppressant, comprising the following steps:

[0062] (1) Add 1.5g epoxy resin (E51), 8.0g butyl acrylate, 0.5g methacrylic acid, 0.5g methyl methacrylate, 0.60g phytic acid and 0.020g benzyltriethylammonium chloride to the flask , reacted at 120°C for 2.5 hours in an oil bath to obtain an intermediate, which was taken out for later use.

[0063] (2) 0.60g methacrylic acid, 7.5g butyl acrylate, 2.0g styrene, 1.0g alkylphenol ether sulfosuccinate sodium salt, 0.70g polyoxyethylene octylphenol ether-10, 0.11g Ammonium sulfate, 0.064g of sodium bisulfite, 0.80g of sodium hydrogenphosphate and 40g of deionized water were mixed and reacted in a water bath at 85°C for 30 minutes to prepare a seed emulsion.

[0064] 0.80 g of sodium hydrogen phosphate, 40 g of deionized water, 0.05 g of ammonium persulfate and 0.032 g of sodium bisulfite were prepared as an initiator solution.

[0065] (3) Add 15g butyl a...

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Abstract

The invention discloses a soft-film flame-retardant dust suppressant for coal and a preparation method of the flame-retardant dust suppressant. The flame-retardant dust suppressant comprises the following raw materials, in parts by mass: 1.0-3.0 parts of a modifying agent, 8.0-9.0 parts of butyl acrylate, 1.5-1.7 parts of a functional monomer, 0.5-0.8 part of a flame-retardant monomer, 0.01-0.5 part of a phase transfer catalyst, 28.0-45.0 parts of a polymerization main monomer, 2-3.5 parts of an emulsifying agent, 0.3-0.6 part of an initiator, 1.0-2.0 parts of a pH buffer agent, 60.0-110.0 parts of deionized water, and 1.0-3.0 parts of a flame retardant. After the flame-retardant dust suppressant provided by the invention is sprayed, a dense polymer soft film with good mechanical stabilityand flexibility can be formed on the surface of a material in a short time, and the formed film is not easy to crack and has stronger wind erosion resistance and shock resistance; a nitrogen elementand a phosphorus element are added into the flame-retardant dust suppressant system, so that the polymer soft film forms a nitrogen-phosphorus synergistic flame-retardant system; and the flame-retardant dust suppressant has excellent flame retardance and can prevent air from contacting with the coal, thereby playing a role in preventing the coal from generating spontaneous combustion.

Description

technical field [0001] The invention relates to the technical field of flame retardant and dust suppressant, in particular to a soft film type coal flame retardant and dust suppressant and a preparation method thereof. Background technique [0002] When coal is mined, coal dust will be produced. If the concentration of coal dust reaches its lower explosion limit (114mg / m 3 ), once an open flame is encountered, an explosion may occur, which seriously threatens the safety of coal mines. The coal dust produced in coal open-pit mining fields and mine roadway operations can cause mining workers to suffer from various diseases such as pneumoconiosis, which has caused great harm to the health of mining workers. At the same time, since the coal in the coal pile is in contact with the air when the coal is stored, an oxidation reaction will occur and heat will be released. After the temperature of coal rises, the oxidation reaction speed of coal is accelerated. Like this, just make...

Claims

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Application Information

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IPC IPC(8): C09K3/22C08F283/10C08F220/18
CPCC09K3/22C08F283/105C08F220/1804
Inventor 来水利李晨辉王花陈功葛茹月刘筱尚青青
Owner 内蒙古涵天科技发展有限责任公司
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