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Preparation method of novel ultrahigh-viscosity anionic polyacrylamide

A technology of polyacrylamide and acrylamide, which is applied in the field of preparation of new ultra-high viscosity anionic polyacrylamide, which can solve problems such as difficult to continue to increase significantly, PAM viscosity bottleneck, etc., and achieve good mechanical shear resistance and good viscosity recovery ability , good effect of salt resistance

Inactive Publication Date: 2016-01-06
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nowadays, polyacrylamide (PAM) has been widely used as a tackifier in various fields, but some fields have higher requirements for the viscosity of PAM products, such as incense making, oil extraction, ceramics and construction industries, etc., through traditional processes The viscosity of the produced PAM has reached the bottleneck, and it is difficult to continue to increase significantly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The parts by weight of raw materials are: 210 parts by weight of acrylamide, 90 parts by sodium α-allyl sulfonate, 10 parts by sodium acrylate, 1.5 parts by structure regulator, 620 parts by weight of deionized water, 0.012 parts by weight of potassium persulfate, and 0.008 parts by weight of sodium bisulfite.

[0011] The specific preparation process is:

[0012] (1) Add deionized water, acrylamide, sodium α-allyl sulfonate, sodium acrylate, structure modifier, and initiator into the reactor. After mixing evenly, adjust the pH value to between 4 and 5 with acrylic acid;

[0013] (2) Deoxygenate with nitrogen for 30 minutes, add an initiator and polymerize at 2°C;

[0014] (3) After the reaction, take out the jelly, granulate the rubber block, and place the rubber granule in an oven at 75°C for drying;

[0015] (4) After 2 hours, the dried colloidal particles were taken out and pulverized to obtain the product. The viscosity of the product was 810 cps.

Embodiment 2

[0017] The parts by weight of raw materials are: 240 parts by weight of acrylamide, 120 parts of sodium α-allyl sulfonate, 15 parts of sodium acrylate, 3 parts of structure regulator, 680 parts of deionized water, 0.027 parts of potassium persulfate, and 0.018 parts of sodium bisulfite.

[0018] The specific preparation process is:

[0019] (1) Add deionized water, acrylamide, sodium α-allyl sulfonate, sodium acrylate, structure modifier, and initiator into the reactor. After mixing evenly, adjust the pH value to between 4 and 5 with acrylic acid;

[0020] (2) Deoxygenate with nitrogen for 30 minutes, add an initiator and polymerize at 2°C;

[0021] (3) After the reaction, take out the jelly, granulate the rubber block, and place the rubber granule in an oven at 75°C for drying;

[0022] (4) After 2 hours, the dried colloidal particles were taken out and pulverized to obtain the product with a viscosity of 860 cps.

Embodiment 3

[0024] The parts by weight of raw materials are: 270 parts by weight of acrylamide, 160 parts by sodium α-allylsulfonate, 22 parts by sodium acrylate, 6 parts by structure modifier, 700 parts by weight of deionized water, 0.042 parts by potassium persulfate, and 0.021 parts by sodium bisulfite.

[0025] The specific preparation process is:

[0026] (1) Add deionized water, acrylamide, sodium α-allyl sulfonate, sodium acrylate, structure modifier, and initiator into the reactor. After mixing evenly, adjust the pH value to between 4 and 5 with acrylic acid;

[0027] (2) Deoxygenate with nitrogen for 30 minutes, add an initiator and polymerize at 2°C;

[0028] (3) After the reaction, take out the jelly, granulate the rubber block, and place the rubber granule in an oven at 75°C for drying;

[0029] (4) After 2 hours, the dried colloidal particles were taken out and pulverized to obtain the product with a viscosity of 900 cps.

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Abstract

The invention relates to a preparation method of novel ultrahigh-viscosity anionic polyacrylamide. The novel ultrahigh-viscosity anionic polyacrylamide comprises, by weight, 200-270 parts of acrylamide, 80-160 parts of sodium alpha-alkyl sulfonate, 10-22 parts of sodium acrylate, 1-6 parts of a structure modifier, 600-700 parts of deionized water and 0.02-0.08 parts of an initiator. The preparation method comprises the following steps: adding acrylamide, sodium alpha-alkyl sulfonate and sodium acrylate into a reactor, adding the structure modifier in proportion, carrying out nitrogen introducing deoxygenation for 50min, adjusting the pH value to 4-5, adding the initiator, and polymerizing at 2-5DEG C; and taking out the obtained gelly after the reaction, granulating the obtained polymer, drying, and crushing to obtain the above target product. The product changes single linear structure of previous polyacrylamide products, molecular chains are microscopically distributed in an emanative manner along center axis, and all emanative branched chains are mutually associated and wound, so the novel ultrahigh-viscosity anionic polyacrylamide has large viscosity and apparent viscosity, good high temperature and high salinity resistance, and strong viscosity recovery ability after shearing, and can well adapt to requirements of industries of oilfield, joss stick production, buildings and ceramics.

Description

technical field [0001] The invention relates to a preparation method of a novel superhigh-viscosity anionic polyacrylamide in the field of water-soluble polymer chemical additives. Background technique [0002] Nowadays, polyacrylamide (PAM) has been widely used as a tackifier in various fields, but some fields have higher requirements for the viscosity of PAM products, such as incense making, oil extraction, ceramics and construction industries, etc., through traditional processes The viscosity of the produced PAM has reached the bottleneck, and it is difficult to continue to increase significantly. Contents of the invention [0003] The new ultra-high viscosity anionic polyacrylamide described in this patent is a water-soluble polymer with a rigid structure prepared by copolymerizing cationic monomers and acrylamide, and controlling the polymer structure by adding a structure regulator. polymer. The product has good solubility, better adaptability to water purification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F228/02C08F220/06C08F2/38
Inventor 许永升荣敏杰
Owner SHANDONG NUOER BIOLOGICAL TECH
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