Preparation method for nonionic hydrophobic association polyacrylamide

A polyacrylamide and hydrophobic association technology, applied in the field of polymer chemistry, can solve the problems of complex preparation of surface active monomers, high cost, and little research work on the surface active monomer method, so as to eliminate post-treatment, improve Production efficiency, the effect of simplifying the preparation process

Active Publication Date: 2013-10-23
XIAN JIBANG NEW AGROCHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of surface-active monomers suitable for HAPAM is complicated and costly, so the research work on surface-active monomers is rarely carried out.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1, 1) First, the organosilicon monomer methacryloxypropyltrimethoxysilane, acrylamide and water were uniformly mixed in a mass ratio of 1:10:10 to prepare a mixed solution;

[0016] 2) Next, blow nitrogen into the mixed solution at a rate of 20mL / min for 60 minutes;

[0017] 3) Then, add initiator ammonium persulfate of 1.0% of the total monomer mass and stir evenly;

[0018] 4) Finally, place it in an ultrasonic generator at 20°C for ultrasonic polymerization, with ultrasonic power of 80, W, and react for 5 hours to obtain non-ionic hydrophobic association polyacrylamide.

Embodiment 2

[0019] Example 2, 1) First, the organosilicon monomer vinyl tributylketoxime silane, acrylamide and water were uniformly mixed in a mass ratio of 1:200:10000 to prepare a mixed solution;

[0020] 2) Next, blow nitrogen into the mixed solution at a rate of 200mL / min for 10 minutes;

[0021] 3) Then, add the initiator azobisisobutylamidine hydrochloride with 0.1% of the total monomer mass and stir evenly;

[0022] 4) Finally, placed in an ultrasonic generator at 90°C for ultrasonic polymerization, with an ultrasonic power of 200W, and reacted for 0.5 hours to obtain non-ionic hydrophobically associated polyacrylamide.

Embodiment 3

[0023] Example 3, 1) First, the organosilicon monomer vinyltriacetoxysilane, acrylamide and water were uniformly mixed at a mass ratio of 1:50:100 to prepare a mixed solution;

[0024] 2) Next, blow nitrogen into the mixed solution at a rate of 50mL / min for 10 minutes;

[0025] 3) Then, add initiator ammonium persulfate-sodium thiosulfate with 0.3% of the total monomer mass and stir evenly;

[0026] 4) Finally, placed in an ultrasonic generator at 50°C for ultrasonic polymerization with an ultrasonic power of 100W, and reacted for 2 hours to obtain a non-ionic hydrophobic association polyacrylamide.

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PUM

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Abstract

The invention discloses a preparation method for nonionic hydrophobic association polyacrylamide. The preparation method comprises the following steps: mixing organic silicon monomers, acrylamide and water uniformly; introducing nitrogen and removing oxygen; adding an initiator; and performing polymerization with the assistance of ultrasonic wave to obtain the nonionic hydrophobic association polyacrylamide. Due to a high-efficiency dispersive effect of the ultrasonic wave, the organic silicon monomers can be dispersed into aqueous solution well without adding emulsifying agents or surface active monomers and is copolymerized with hydrophilic monomers. Through the adoption of the preparation method, the emulsifying agents or surface active monomers are avoided, aftertreatment on HAPAM is completely eliminated, the preparation process is simplified, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of polymer chemistry, in particular to a preparation method of nonionic hydrophobic association polyacrylamide. Background technique [0002] Polyacrylamide and its derivatives are important polymers with a wide range of applications. Among the many types of polyacrylamide, hydrophobic association polyacrylamide is an important branch. Hydrophobic associative polyacrylamide is made by introducing a small amount of hydrophobic groups into the main chain of polyacrylamide. Due to the hydrophobic interaction between the hydrophobic groups, the molecular chains of polyacrylamide are clustered, which significantly changes the concentration of the solution. Rheological properties, improve the application effect and expand the application field. At present, the hydrophobic groups introduced on the main chain of hydrophobic association polyacrylamide are mainly hydrocarbon hydrophobic monomers. Silicone monomer is a strong...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F230/08C08F2/56
Inventor 王晨李小瑞沈一丁李培枝罗灿
Owner XIAN JIBANG NEW AGROCHEM IND
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