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Moistening bonding type dust-control graft modification inhibitor and preparation method thereof

A technology of graft modification and inhibitor, which is applied in the field of dust suppressant and its preparation, can solve the problems of re-pollution, loss of dust suppression effect, easy cracking of consolidated layer, etc., and achieve good dust control effect

Active Publication Date: 2019-08-27
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although some progress has been made in the dust suppressant in the above-mentioned prior art, it still has some shortcomings, for example, a series of dust suppressant prepared from monomers and raw materials have good hygroscopicity and water retention , and this kind of dust suppressant will consolidate under dry conditions, and also has certain dust control performance
However, after drying and consolidation, the consolidated layer covering coal dust will form a brittle and hard shell. Under the action of transportation and strong wind, the formed consolidated layer will be easily broken and lose its dust suppression effect, resulting in re-pollution

Method used

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  • Moistening bonding type dust-control graft modification inhibitor and preparation method thereof
  • Moistening bonding type dust-control graft modification inhibitor and preparation method thereof
  • Moistening bonding type dust-control graft modification inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Adopt the weight proportion of combination one raw material.

[0040] Preparation:

[0041] The first step is to neutralize itaconic acid and acrylic acid with alkali respectively, and the neutralization degree is 70%. The neutralized itaconic acid and acrylic acid are mixed together, put into a three-necked flask, and put Stir in a magnetic heating pot, the pH value is 6, and stir to obtain a mixed solution 1;

[0042] In the second step, potassium persulfate is prepared into a solution with a certain mass fraction, and part of it is added to the mixed solution 1 of the first step to obtain the mixed solution 2. The temperature of the reactor is controlled to rise to 70°C, and after stirring for 1.5 hours, the obtained intermediate product IA-co-AA;

[0043] The third step is to dissolve the nano-based bentonite to obtain a bentonite solution, and add the intermediate product IA-co-AA obtained in the second step to the bentonite solution to obtain a mixed solution th...

Embodiment 2

[0045] Adopt the weight proportion of combining two raw materials.

[0046] Preparation:

[0047] The first step is to neutralize itaconic acid and acrylic acid with alkali respectively, and the neutralization degree is 70%. The neutralized itaconic acid and acrylic acid are mixed together, put into a three-necked flask, and put Stir in a magnetic heating pot, the pH is 8, and stir to obtain a mixed solution 1;

[0048]In the second step, potassium persulfate is prepared into a solution with a certain mass fraction, and part of it is added to the mixed solution 1 of the first step to obtain the mixed solution 2. The temperature of the reactor is controlled to rise to 70°C, and after stirring for 1.5 hours, the obtained intermediate product IA-co-AA;

[0049] The third step, dissolving the nano-based bentonite to obtain a bentonite solution, adding the intermediate product IA-co-AA obtained in the second step to the bentonite solution to obtain a mixed solution three, adding ...

Embodiment 3

[0051] The first step is to neutralize itaconic acid and acrylic acid with alkali respectively, and the neutralization degree is 70%. The neutralized itaconic acid and acrylic acid are mixed together, put into a three-necked flask, and put Stir in a magnetic heating pot, the pH value is 6, and stir to obtain a mixed solution 1;

[0052] In the second step, potassium persulfate is prepared into a solution with a certain mass fraction, and part of it is added to the mixed solution 1 of the first step to obtain the mixed solution 2. The temperature of the reactor is controlled to rise to 70°C, and after stirring for 1.5 hours, the obtained intermediate product IA-co-AA;

[0053] The third step, dissolving the nano-based bentonite to obtain a bentonite solution, adding the intermediate product IA-co-AA obtained in the second step to the bentonite solution to obtain a mixed solution three, adding the remaining potassium persulfate solution to the mixed solution three, To obtain mi...

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Abstract

The invention discloses a moistening bonding type dust-control graft modification inhibitor and a preparation method thereof, and relates to the technical field of dust depressors and preparation thereof. The inhibitor is prepared from, by weight, 1-2% of sodium-based bentonite, 1-2.5% of itaconic acid, 4-5% of acrylic acid, 0.15-0.2% of N,N'-methylene bisacrylamide, 0.0375%-0.04% of potassium peroxodisulfate, 0.15-0.25% of lauryl sodium sulfate, 0.5-1.5% of fatty alcohol-polyoxyethylene ether, 0.25-0.3% of sodium hydroxide and the balance water. The sodium-based bentonite serves as a raw material, the itaconic acid and the acrylic acid serve as monomers, and resin is formed after polymerization and has the functions of thickening and adsorption. The inhibitor can improve the dust suppression efficiency and improve the dust concentration of a working surface in a coal mine.

Description

technical field [0001] The invention relates to the technical field of dust suppressant and its preparation, in particular to a graft-modified inhibitor for wetting and bonding type dust control and a preparation method thereof. Background technique [0002] Coal dust is produced during the production, transportation and loading of raw coal. The coal dust produced in the coal production process is very harmful. According to the field measurement, without any dust prevention measures, the coal dust concentration of the fully mechanized mining face exceeds 1000mg / m 3 , which far exceeds the national standard (2mg / m 3 ), workers work in this environment for a long time, inhaling a large amount of coal dust can easily cause coal lung disease. At present, coal transportation is generally carried by gondola cars. During the transportation process, due to the bumps of the subgrade roads and rails, coupled with the wind force, the coal powder and particles on the surface are blown...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22C08F292/00C08F222/02C08F220/06C08F222/38C08F2/44
CPCC09K3/22C08F292/00C08F2/44C08F220/06
Inventor 聂文鲍秋刘长奇张海涵王鸿坤闫嘉祎刘强彭慧天华贇刘华君袁明月周伟伟
Owner SHANDONG UNIV OF SCI & TECH
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