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Dust depressor for open storage area and preparation method thereof

A dust suppressant and storage yard technology, applied in the field of silicon-acrylic emulsion dust suppressant and its preparation, can solve the problems of affecting plant growth, VOC secondary pollution, not resistant to rain erosion, etc., and achieves good environmental safety and hydrophobicity Improvement, hardness and water erosion resistance improvement effect

Inactive Publication Date: 2019-01-11
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calcium chloride, magnesium chloride, aluminum chloride, sodium sulfate, and water glass have low cost and good antifreeze effect, but they have problems such as corroding metal, polluting soil, and affecting plant growth.
Ethylene glycol, glycerol and their derivatives have the functions of absorbing water, retaining water and lowering the freezing point, but they have poor durability, are not resistant to rain erosion, and have VOC secondary pollution
Coal tar, coal residue oil, wood residue oil, shale residue oil, light oil, heavy oil, coal tar, soft resin and soft asphalt have good infiltration and bonding effects on the surface of dust particles, and the dust suppression effect is good, but Such substances have high content of condensed ring aromatics, dark color, heavy odor, and prominent secondary pollution

Method used

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  • Dust depressor for open storage area and preparation method thereof
  • Dust depressor for open storage area and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 0.6g sodium bicarbonate, 3g silica sol, 1g emulsifier SDS, 0.5g emulsifier D-360, 1.2g emulsifier 15S-20 and 100g of distilled water, replaced with nitrogen for 30 minutes under stirring, the temperature of the water bath was raised to 80°C, and 4g of acrylic acid, 19g of butyl acrylate, 2g of triethylene glycol diacrylate, 3g of glycidyl acrylate and 5g of hydroxyethyl acrylate were added dropwise Prepared mixed monomers. During the dropwise addition of monomers, 8 g of ammonium persulfate aqueous solution with a mass concentration of 5% was added dropwise. When the mixed monomers were added dropwise to the remaining 20%, the organosilicon monomer prepared from 2.0 g of vinyltriethoxysilane and 0.8 g of γ-glycidyl etheroxypropyltrimethoxysilane was started to be added dropwise. Control the dripping progress, and the dripping was completed in 3.0 hours. After the addition of the monomers was completed, the temperature of the system was raised to 87° C. and kept fo...

Embodiment 2

[0031] Other steps are the same as in Example 1, except that the dosage of γ-glycidoxypropyltrimethoxysilane is 0 g; the dosage of silica sol is increased to 3.8 g; and the coal powder is replaced by iron ore powder.

[0032] The performance evaluation method is the same as in Example 1.

Embodiment 3

[0034] Add 0.4g sodium bicarbonate, 4.2g silica sol, 1.5g emulsifier D-828, 0.8g emulsifier D-830, 1.0g emulsifier to the reactor equipped with stirrer, thermometer, dropping funnel and nitrogen conduit F-3280, 100g of distilled water, nitrogen replacement with the help of stirring for 30 minutes, the temperature of the water bath was raised to 80°C, and the mixture of 4g of methacrylic acid, 3g of methyl methacrylate, 16g of butyl acrylate, and 2g of trimethylolpropane was added dropwise. Acrylate, 3g glycidyl acrylate and 5g hydroxypropyl acrylate mixed monomer. Meanwhile, 15 g of an aqueous solution of potassium persulfate with a mass concentration of 2.2% was added dropwise during the dropwise addition of monomers. When the mixed monomers were added dropwise to the remaining 20%, the organosilicon monomer prepared from 1.7g of vinylmethyldiethoxysilane and 1.3g of γ-methacryloxypropyltrimethoxysilane was started to be added dropwise. Control the dripping progress, and the...

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Abstract

The invention provides a dust depressor for an open storage area and a preparation method thereof. The dust depressor is prepared by an emulsion copolymerization method from the following raw materials: acrylic acid serial mixed monomer, organic silicon monomer, silica sol, emulsifier, initiator, a buffering agent and water. The dust depressor is prepared by using water as a medium, does not contain a volatile organic substance, formaldehyde or aromatic compound, and does not have corrosion or secondary pollution, so that the hydrophobic property of emulsion can be improved due to the organicsilicon monomers, hardness and water erosion resistance after storage yard powder crusting can be improved, and the raise dust of construction powder, mineral powder or coal powder raise dust in an open storage area can be effectively controlled.

Description

technical field [0001] The invention relates to a dust suppressant in the field of dust control in open stockyards, in particular to a silicon-acrylic emulsion dust suppressant for open stockyards and a preparation method thereof. Background technique [0002] The climate in most parts of northern my country is dry, and the unorganized discharge of building material powder, mineral powder and coal powder in the open storage yard not only causes material loss, but also pollutes the surrounding environment. The most commonly used dust suppression method to control dust in thermal power plants, coal storage yards, cement plants, steel plants, municipal construction, freight yards, and wharf yards is to sprinkle water to increase the density of dust by increasing the water content of the dust, thereby increasing the wind power of dust. The sprinkling operation is simple, but the moisture resistance to evaporation is poor, the effective dust suppression time is short, and it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/06C08F222/20C08F220/32C08F220/20C08F230/08C08F222/14C08F220/14C08F2/26C08F2/30C08K3/36C09K3/22
CPCC09K3/22C08F2/26C08F2/30C08F220/18C08K3/36C08F220/1804C08F222/102C08F220/325C08F220/20C08F230/08C08F220/06C08F220/14C08F222/103
Inventor 殷福星郭宏飞苏璐璐张福强杨红健
Owner HEBEI UNIV OF TECH
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