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Method for Polymerization of Acrylamide Using Ultrasonic Technology

A technology of acrylamide and ultrasonic technology, which is applied in the field of preparation of instant ultra-high intrinsic viscosity anionic polyacrylamide dry powder, can solve the problems of no chemical action involved, no obvious contribution to the shortening of polymerization time, etc., and achieve simple polymerization process Practical, easy for large-scale industrial production, and the effect of activity enhancement

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102675533 and patent CN102649829 utilize the high-efficiency dispersion of ultrasonic waves, and what happens to the polymerization system is physical action, which has no obvious contribution to the improvement of the intrinsic viscosity of the polymer and the shortening of the polymerization time, that is, it does not involve the generation of the system. chemical effect

Method used

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  • Method for Polymerization of Acrylamide Using Ultrasonic Technology
  • Method for Polymerization of Acrylamide Using Ultrasonic Technology
  • Method for Polymerization of Acrylamide Using Ultrasonic Technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Add 133.3g of deionized water into the polymerization container, add 666.7g of 30% acrylamide monomer aqueous solution, 36g of sodium carbonate, 6g of urea, and 0.1g of sodium formate in turn under stirring, and adjust the system with NaOH after all the solids in the system are dissolved The pH value of the polymerizer is 11.5. Put the polymerizer in a 20°C constant temperature water bath with an ultrasonic device, and feed nitrogen into the polymerization system. The nitrogen flow rate is 4L / min. At the same time, the ultrasonic wave is turned on. After 15 minutes, add 0.05 g of initiator azobisisobutylamidine hydrochloride after ultrasonic intensity of 50 W and ultrasonic for 5 minutes. After about 2.5 minutes, the polymerization system starts to polymerize and become sticky, and the temperature rises. After 2.5 hours, the temperature of the polymerization system reaches 69.7 ° C, and then The temperature of the system begins to drop, the polymerization reaction ends, a...

Embodiment 2

[0044] According to the method and steps of Example 1, the difference is that the ultrasonic intensity of the monomer and initiator in Example 2 is 100W, and other conditions are the same, and the technical indicators of the polyacrylamide dry powder obtained are as follows:

[0045]

Embodiment 3

[0047] According to the method and steps of Example 1, the difference is that the ultrasonic intensity of the monomer and initiator in Example 3 is 150W, and other conditions are the same, and the technical indicators of the polyacrylamide dry powder obtained are as follows:

[0048]

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Abstract

The invention belongs to the field of polymer synthesis, and particularly relates to a preparation method for activating a polymerization monomer and an initiator by an ultrasonic treatment technology to prepare instant ultrahigh-intrinsic viscosity anionic polyacrylamide dry powder. The preparation method comprises the following steps: performing ultrasonic activation treatment on deionized water, an aqueous acrylamide solution, sodium carbonate, a cosolvent and a chain transfer agent, and adding the initiator treated by ultrasonic activation for performing polymerization reaction. Through ultrasonic treatment on the raw materials and the initiator, activity of an acrylamide monomer and the initiator are enhanced, the amount of the initiator required during polymerization is reduced, the initiating temperature is lower, and an obtained polymer has higher intrinsic viscosity and better solubility.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and specifically relates to a method for preparing instant ultra-high intrinsic viscosity anionic polyacrylamide dry powder by activating polymerization monomers and initiators by ultrasonic treatment technology. Background technique [0002] Anionic polyacrylamide dry powder with instant characteristics and ultra-high intrinsic viscosity is widely used as a water-soluble polymer product in sewage treatment, oilfield drilling, papermaking and tertiary oil recovery industries. Especially in oil extraction, especially in the stage of tertiary oil recovery, in low-temperature, low-salt oil reservoir environment, the higher the intrinsic viscosity of the polymer, the higher the oil recovery efficiency, and the solubility of the polymer also has a great impact on the product. Efficiency of use is critical. Therefore, both scientific research institutions and manufacturers are constantly conducting re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/56C08F2/38C08F2/56
Inventor 郭卫东张勇李留忠梁斌张磊
Owner CHINA PETROLEUM & CHEM CORP
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