Preparation method of high-polymer material for water blocking

A polymer material and water blocking technology, which is applied in the field of functional polymer chemical additives, can solve the problems of low thermal stability and anti-degradation ability, poor longitudinal water blocking effect, and weak bonding of substrates, and achieves longitudinal resistance. The effect of good water effect, high water absorption rate, good thermal stability and anti-degradation ability

Inactive Publication Date: 2017-02-08
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the water-blocking tape products used in the market are also acrylic polymers. The production process is cumbersome, the longitudinal water-blocking effect is poor, the thermal stability and degradation resistance are low, and it is seriously affected by high-temperature environments. Mostly concentrated at 15-18mm / min, the absorption rate of pure water is 200-260 times / min, the water absorption rate is low, and the absorption rate of 0.9% saline is below 60-70 times, which cannot meet the needs of today's life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Raw material weight components: Acrylic acid 200, 50% sodium hydroxide solution 219, acrylamide 19, deionized water 350, ethoxylated pentaerythritol tetraacrylate 5, propylenediamine 1, initiator 0.6.

[0011] The preparation process is:

[0012] 1. First add acrylic acid to the reaction kettle, then add deionized water;

[0013] 2. Then neutralize with sodium hydroxide solution;

[0014] 3. Then add acrylamide, ethoxylated pentaerythritol tetraacrylate, propylene diamine, and mix thoroughly;

[0015] 4. Then start stirring, and pass through high-purity nitrogen to remove oxygen for 10 minutes;

[0016] 5. Under the protection of nitrogen, add an initiator to initiate polymerization at 5°C, the reaction process will exotherm violently, the volume will expand, and the volume of the colloid will shrink after the reaction is completed;

[0017] 6. The colloid is granulated, dried, crushed and screened to obtain super absorbent resin.

[0018] The obtained product index...

Embodiment 2

[0026] Raw material weight components: Acrylic acid 260, 50% sodium hydroxide solution 281, acrylamide 26, deionized water 392, ethoxylated pentaerythritol tetraacrylate 7.5, propylenediamine 1.5, initiator 0.8.

[0027] The preparation process is:

[0028] 1. First add acrylic acid to the reaction kettle, then add deionized water;

[0029] 2. Then neutralize with sodium hydroxide solution;

[0030] 3. Then add acrylamide, ethoxylated pentaerythritol tetraacrylate, propylene diamine, and mix thoroughly;

[0031] 4. Then start stirring, and pass through high-purity nitrogen to remove oxygen for 30 minutes;

[0032] 5. Under the protection of nitrogen, add an initiator to initiate polymerization at 6°C, the reaction process will be violently exothermic, the volume will expand, and the volume of the colloid will shrink after the reaction is completed;

[0033] 6. The colloid is granulated, dried, crushed and screened to obtain super absorbent resin.

[0034] The obtained prod...

Embodiment 3

[0042] Raw material weight components: Acrylic acid 300, 50% sodium hydroxide solution 296, acrylamide 28, deionized water 400, ethoxylated pentaerythritol tetraacrylate 10, propylenediamine 2, initiator 2.

[0043] The preparation process is:

[0044] 1. First add acrylic acid to the reaction kettle, then add deionized water;

[0045] 2. Then neutralize with sodium hydroxide solution;

[0046] 3. Then add acrylamide, ethoxylated pentaerythritol tetraacrylate, propylene diamine, and mix thoroughly;

[0047] 4. Then start stirring, and pass through high-purity nitrogen to remove oxygen for 45 minutes;

[0048] 5. Under the protection of nitrogen, add an initiator to initiate polymerization at 8°C, the reaction process will exotherm violently, the volume will expand, and the volume of the colloid will shrink after the reaction is completed;

[0049] 6. The colloid is granulated, dried, crushed and screened to obtain super absorbent resin.

[0050] The obtained product index ...

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Abstract

The invention discloses a preparation method of a high-polymer material for water blocking. The high-polymer material comprises the following raw materials in parts by weight: 260 parts of acrylic acid, 281 parts of 50% sodium hydroxide solution, 26 parts of acrylamide, 392 parts of deionized water, 7.5 parts of ethoxylated pentaerythritol tetraacrylate, 1.5 parts of propylene diamine and 0.8 part of initiator. The preparation method comprises the following steps: adding the acrylic acid, the deionized water and the 50% sodium hydroxide solution into a reactor, and neutralizing; then adding the acrylamide, the ethoxylated pentaerythritol tetraacrylate and the propylene diamine; introducing nitrogen gas to remove oxygen for 10 minutes, and stirring; adding the initiator, and initiating polymerization reaction at 5-8 DEG C to obtain a colloid; and granulating, drying, crushing, and screening. According to the invention, the preparation method is simple in production process and stable in technical performance; the high-polymer material has a high water absorption rate and achieves a high swelling rate when encountering water; and the high-polymer material has a good water blocking effect and favorable heat stability and degradation resistance, is not influenced by a high-temperature environment, and can be uniformly and firmly combined with a substrate.

Description

technical field [0001] The invention relates to a preparation method of a water-blocking polymer material in the field of functional polymer chemical additives. Background technique [0002] At present, the water-blocking tape products used in the market are also acrylic polymers. The production process is cumbersome, the longitudinal water-blocking effect is poor, the thermal stability and degradation resistance are low, and it is seriously affected by high-temperature environments. Mostly concentrated at 15-18mm / min, the absorption rate of pure water is 200-260 times / min, the water absorption rate is low, and the absorption rate of 0.9% saline is below 60-70 times, which cannot meet the needs of today's life. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a water-blocking polymer material for the defects of the prior art. [0004] The technical solution is: a method for preparing a water-blocking polymer mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/56C08F222/20
CPCC08F220/06C08F220/56C08F222/104
Inventor 荣敏杰许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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