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Composite hygroscopic and moisture-retention type inhibitor for small-particle-size flying dust and preparation method of composite hygroscopic and moisture-retention type inhibitor

An inhibitor, small particle size technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor dust suppression effect with small particle size and limited application range of dust inhibitor, and achieve excellent moisturizing effect, suppressing The dust effect is outstanding, the effect of improving air quality

Inactive Publication Date: 2017-03-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the defects of limited application range of existing dust inhibitors and poor suppression effect on small particle size dust, and provide a moisturizing and moisture-absorbing composite small particle size dust inhibitor formula and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 20g of acrylic acid and 10g of acrylamide in advance, mix well and set aside. Add 40g of water and 0.15g of mercaptoacetic acid into a 250mL four-neck flask equipped with a thermometer, condenser, dropping funnel and constant speed stirring device, stir and heat, raise the temperature to about 80°C, and start adding the monomer mixture of acrylic acid and acrylamide dropwise And 20g ammonium persulfate aqueous solution (ammonium persulfate content 2g), continue to heat up to reflux, after 1.5h completes the dropwise addition, continue reflux reaction 1h, then add CaCl 2 2g, 10g of ammonium lignosulfonate, continue to keep warm and stir for 0.5h, then cool and age to obtain a liquid product, marked as A.

Embodiment 2

[0028] Weigh 10 g of methyl methacrylate and 15 g of methacrylamide, mix well and set aside. Add 40g of water and 0.2g of isopropanol to the three-necked flask in Example 1, stir and heat, raise the temperature to about 80°C, and start to dropwise add the monomer mixture of methacrylamide and methyl methacrylate and 20g of sodium persulfate aqueous solution (sodium persulfate content 1.5g), continue to heat up to reflux, after 1.5h to complete the dropwise addition, continue to reflux for 1h, then add MgSO 4 1.5g, sodium lignosulfonate 12g, continue to keep warm and stir for 0.5h, then cool and age to obtain liquid product B.

Embodiment 3

[0030] Others are as in Example 1, the difference from Example 1 is: use hydroxypropyl methacrylate and 2-acrylamide-2-methylpropylsulfonic acid instead of acrylic acid and acrylamide to obtain liquid product C.

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PUM

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Abstract

The invention discloses a composite hygroscopic and moisture-retention type inhibitor for small-particle-size flying dust and a preparation method of the composite hygroscopic and moisture-retention type inhibitor. The composite hygroscopic and moisture-retention type inhibitor comprises 20-30% of high-molecular polymers, 1-5% of hygroscopic agent, 5-15% of xylogen additives and 50-60% of water. The preparation method includes the steps of heating water and a telomere to about 80 DEG C, dropping unsaturated double bond contained vinyl monomers and an initiator respectively with continuous stirring, refluxing for 0.5-1 hour, adding the xylogen additives, the hygroscopic agent and the like, stirring for 20-40 minutes, cooling, and aging to obtain uniform liquid inhibitor. The composite dust inhibitor is high in hygroscopicity, moisture retention property and water solubility and capable of improving air quality and living environment remarkably by effectively inhibiting particles of different sizes on the ground from entering into air.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a composite small particle size dust inhibitor with moisture absorption and moisturizing functions and a preparation method thereof. [0002] technical background [0003] The National Environmental Quality Bulletin pointed out that in more than 340 cities in my country, the concentration of air particulate matter in nearly two-thirds exceeds the national secondary standard, becoming the primary urban air pollutant. Under normal circumstances, large-sized dust will slowly settle due to gravity, but small-sized dust (such as particles below PM10) can float in the air for a long time, and part of it enters the human respiratory system and blood circulation system, seriously affecting human health. . In particular, fine particulate matter with a particle size below 2.5 microns (PM 2.5) can be transported to distant places by atmospheric circulation, caus...

Claims

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Application Information

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IPC IPC(8): C08L33/26C08L33/02C08L33/14C08K3/16C08K3/30C09K3/22C08F220/56C08F220/54C08F220/06C08F220/28
Inventor 夏明珠郑春梅王风云雷武
Owner NANJING UNIV OF SCI & TECH
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