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

Inactive Publication Date: 2015-06-10
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN103265990, CN102585770 and CN103305187 etc. have disclosed the composite technology of high molecular compound and sodium chloride, sodium pyrophosphate, copper sulfate, glycerin, alkylphenol polyoxyethylene ether, although the wetting, adsorption or anti-dust agent has been improved. Freezing performance, but it also inherits the corrosion of metal ions, the volatility of low molecular organic compounds and other shortcomings

Method used

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  • Water-based dust depressor and preparation method thereof
  • Water-based dust depressor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides a water-based dust depressor and a preparation method thereof. The dust depressor is prepared through water solution copolymerization, the dust depressor comprises 6-25 parts of unsaturated acid; 2-10 parts of unsaturated esters; 0.1-0.5 part of cross-linking agent; 0.1-2.0 parts of initiating agent and 100 parts of water; the raw materials further comprise antalkali, and the quantity of the antalkali adjusts the pH value of a reaction system to 6.0-9.0. The dust depressor is prepared by the unsaturated acid and the unsaturated esters through the water solution copolymerization technology, a shell layer can be formed on the surface of a dust particle, a good moisturizing function and a dust depressing function are achieved, and an obtained product contains neither volatile low-molecular compounds nor corrosive high valence metal ions. The prepared chemical dust depressor can be used by being diluted with water and sprayed, the comprehensive performance is good, and the safety and environmental protection are achieved.

Description

technical field [0001] The invention relates to a chemical dust suppressant in the field of urban road dust control, in particular to a water-soluble polymer dust suppressant and a preparation method thereof. Background technique [0002] The degree of industrialization continues to accelerate and the scale of cities continues to expand. The problem of dust pollution caused by coal yards, coal burning, mineral processing, construction and motor vehicles on urban roads is becoming more and more obvious, and smog weather occurs frequently and lasts longer. Dust pollution endangers the surrounding environment and affects the normal production order and quality of life. Inhalable particulate matter (PM10) and fine particulate matter (PM2.5) are enriched with a large amount of heavy metal ions, organic oxides, bacteria and viruses. PM2.5 particles enter the bronchioles and alveoli due to the inability of the nose and throat to block them, which is harmful to the human body Extre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/02C08F220/58C08F220/14C08F220/28C08F222/14C08F222/38C08F2/10C09K3/22
Inventor 王新韩双福殷福星殷昊张福强
Owner HEBEI UNIV OF TECH
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