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Preparation method of high-water solubility polyacrylamide

A technology for polyacrylamide and acrylamide, which is applied in the field of water-soluble polymer material synthesis, can solve the problems of complicated operation steps, complicated preparation methods, improper handling and the like, and achieves the effects of simplified technological process, simple preparation method and complete reaction.

Inactive Publication Date: 2020-03-17
无棣荣业网具有限公司
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  • Abstract
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Problems solved by technology

[0015] In order to solve the above-mentioned technical problems, the present invention provides a method for preparing highly water-soluble polyacrylamide, so as to solve the problems of complex preparation methods, cumbersome operation steps and easy environmental pollution caused by improper handling in existing polyacrylamide preparation methods. The preparation method of highly water-soluble polyacrylamide specifically comprises the following steps:

Method used

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  • Preparation method of high-water solubility polyacrylamide

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preparation example Construction

[0043] The preparation method of highly water-soluble polyacrylamide specifically comprises the following steps:

[0044] S101: preparing the same water-soluble raw material to form a composite initiator;

[0045] S102: Prepare acrylamide and benzoyl peroxide again for polymerization to form auxiliary materials;

[0046] S103: In the three-necked bottle, dissolve the auxiliary materials in distilled water, and continuously inject nitrogen gas into the three-necked bottle, and control it within a reasonable range of time, and then add benzoyl peroxide in a reasonable range in real time until propylene is formed Amide solution;

[0047] S104: Connect one of the ports of the three-necked bottle to a reflux condenser, install a stirrer on the middle port of the three-necked bottle, and carry out stirring and reflux. At the same time, the water bath is heated to a reasonable temperature range to start the reaction, and the reaction lasts for three Nitrogen gas is passed into the ...

specific Embodiment 1

[0061] 1. Dissolve 15 grams of ammonium persulfate in 200 ml of water;

[0062] 2. Dissolve 20 grams of acrylamide in 60 milliliters of water, add 0.3 grams of nano-silica and 15 milliliters of ammonium persulfate solution, and stir for 20 minutes with a stirring bar;

[0063] 3. Pour the mixture into a plastic bottle, place it in a vacuum drying oven at 80 degrees Celsius for 6 to 8 minutes, open the vacuum valve, pump the pressure in the oven to 0.21 MPa, and react for 5 hours;

[0064] 4. Put the product in an oven at 85 degrees Celsius for 4 to 5 hours, take it out, cut it into small pieces, put it in an oven at 85 degrees Celsius until it is dry, take it out and crush it.

specific Embodiment 2

[0066] 1. Dissolve 15 grams of ammonium persulfate in 200 ml of water;

[0067] 2. Dissolve 25 grams of acrylamide in 65 milliliters of water, add 0.4 grams of nano-silica and 20 milliliters of ammonium persulfate solution, and stir for 30 minutes with a stirring bar;

[0068] 3. Pour the mixture into a plastic bottle, place it in a vacuum drying oven at 80 degrees Celsius for 6 to 8 minutes, open the vacuum valve, pump the pressure in the oven to 0.21 MPa, and react for 5 hours;

[0069] 4. Put the product in an oven at 85 degrees Celsius for 4 to 5 hours, take it out, cut it into small pieces, put it in an oven at 85 degrees Celsius until it is dry, take it out and crush it.

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Abstract

Belonging to the field of water-soluble polymer material synthesis, the invention provides a preparation method of high-water solubility polyacrylamide. The preparation method of the high-water solubility polyacrylamide includes the specific steps of: preparing a composite initiator, preparing raw materials for polymerization to form a preparation auxiliary material, dissolving the auxiliary materials in distilled water in a three-necked bottle to prepare an acrylamide solution, adding nitrogen into the acrylamide solution for reaction to form a reactant, pouring the reactant into a beaker toobtain a white solid, drying the obtained white solid under an infrared lamp, conducting detection, storage and warehousing. The method has the characteristics of complete reaction, no by-product or impurities, and no environmental pollution. The acrylamide involved in the invention does not contain metal copper ions, ion exchange is not needed for removal of copper ions generated in the production process, and the process flow is simplified, in addition, gas chromatography analysis indicates that the acrylamide product almost does not contain free acrylonitrile and has high purity.

Description

technical field [0001] The invention belongs to the technical field of synthesis of water-soluble polymer materials, in particular to a preparation method of highly water-soluble polyacrylamide. Background technique [0002] Polyacrylamide (PAM) is a linear polymer, and its products are mainly divided into two forms: dry powder and colloid. According to its average molecular weight, it can be divided into three categories: low molecular weight (<1 million), medium molecular weight (2 million to 4 million) and high molecular weight (>7 million). According to its structure, it can be divided into non-ionic, anionic and cationic. The anionic type is mostly the hydrolysis of PAM (HPAM). The main chain of polyacrylamide has a large number of amide groups, which has high chemical activity and can be modified to produce many derivatives of polyacrylamide. The products have been widely used in papermaking, mineral processing, oil recovery, metallurgy, building materials, sew...

Claims

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Application Information

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IPC IPC(8): C08F120/56
CPCC08F120/56
Inventor 周国庆
Owner 无棣荣业网具有限公司
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