Water-based dust depressor and preparation method thereof
A dust suppressant, water-based technology, applied in the direction of chemical instruments and methods, other chemical processes, etc., can solve the problems of metal ion corrosion, low molecular organic compound volatility, etc., to avoid water solubility reduction, no secondary pollution, construction safety Effectiveness and safety in use
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Embodiment 1
[0039] The number of parts by mass is in grams, 20 grams of acrylic acid is used as the unsaturated acid material, 2.5 grams of methyl acrylate is used as the unsaturated ester material, and 0.4 grams of ethylene glycol diacrylate is used as the cross-linking agent material, mixed in proportion as the raw material mixture for subsequent use . Add 100 grams of distilled water to the reactor equipped with stirrer, thermometer, dropping funnel and nitrogen conduit, start stirring, replace with argon for 15 minutes, when the water bath is heated to 80 ° C, add 3 grams of 10% super Aqueous solution of ammonium sulfate. After 10 minutes, the above-mentioned raw material mixture was continuously added dropwise with a dropping funnel, and the dropping speed was controlled, and the dropping was completed within 2.5 hours. The temperature of the system was raised to 85°C and kept for 1.5 hours. The system was lowered to room temperature under stirring, and the pH value of the polymeri...
Embodiment 2
[0043]The parts by mass are expressed in grams. With 12 grams of acrylic acid and 5 grams of methacrylic acid as the unsaturated acid material, the material is neutralized with an aqueous solution prepared from 3 grams of sodium hydroxide and 20 grams of water, and cooled to room temperature. 2.5 grams of hydroxyethyl acrylate as the unsaturated ester material, 0.1 g of N,N'-methylenebisacrylamide as the crosslinking agent material, mixed with the neutralized unsaturated acid material to form a raw material mixture, and set aside. Add 80 grams of distilled water to the reactor equipped with stirrer, thermometer, dropping funnel and nitrogen conduit, start stirring, replace with nitrogen for 20 minutes, when the water bath is heated to 80°C, add 6 grams of persulfuric acid with a mass concentration of 3%. Potassium aqueous solution. After 10 minutes, the above-mentioned raw material mixture was continuously added dropwise with a dropping funnel, and the dropping speed was contr...
Embodiment 3
[0046] The implementation steps are the same as in Example 2, except that the unsaturated acid is replaced by 14 grams of acrylic acid and 3 grams of itaconic acid from 12 grams of acrylic acid and 5 grams of methacrylic acid.
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