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
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[0025] Example 1
[0026] Weigh 20 g of acrylic acid and 10 g of acrylamide in advance, and mix them well before use. Add 40g of water, 0.15g of thioglycolic acid to a 250mL four-necked flask equipped with a thermometer, condenser, dropping funnel and constant speed stirring device, stir and heat, raise the temperature to about 80℃, and start to add acrylic acid and acrylamide monomer mixture dropwise. And 20g ammonium persulfate aqueous solution (ammonium persulfate content 2g), continue to heat up to reflux, 1.5h after the dripping is completed, continue to reflux for 1h, and then add CaCl 2 2g, 10g of ammonium lignosulfonate, continue to heat and stir for 0.5h, then cool and age to obtain a liquid product, labeled A.
Example Embodiment
[0027] Example 2
[0028] Weigh 10 g of methyl methacrylate and 15 g of methacrylamide, mix well and set aside. For example, 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 add dropwise 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 is completed dripping, continue to reflux for 1h, and then add MgSO 4 1.5g, 12g of sodium lignosulfonate, continue to heat and stir for 0.5h, then cool and age to obtain liquid product B.
Example Embodiment
[0029] Example 3
[0030] Others are the same as Example 1, and the difference from Example 1 is that hydroxypropyl methacrylate and 2-acrylamide-2-methylpropyl sulfonic acid are used instead of acrylic acid and acrylamide to obtain liquid product C.
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