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A composite polymer water-absorbent resin containing nitrogen and potassium and its preparation method

A polymer water absorption, composite technology, applied in chemical instruments and methods, fertilizer mixtures, other chemical processes, etc., can solve the problems of easy mildew, low water absorption, low resin water absorption, etc., to achieve good water retention effect, sticky good effect

Active Publication Date: 2021-05-14
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Graft copolymerization of starch with acrylic acid, acrylonitrile and other monomers. This kind of resin has good environmental protection. The disadvantage is that the resin has low water absorption and is easy to mildew
(3) Cellulose is copolymerized with monomers such as acrylic acid and acrylonitrile, which is easy to biodegrade, and the disadvantage is low water absorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a reaction vessel equipped with a condensing device and a stirring device, 300 g of reaction medium corn oil, 9 g of pentaerythritol tetraisostearate and 3 g of calcium carbonate were added, and the temperature was raised to 70° C. for mixing. Take another 30g of N-tert-octyl acrylamide, 10g of 3-propyl methacrylate potassium salt, 0.009g of N,N'-ethylenebisstearamide and 0.15g of 2,2-azo(2- Methylpropylimidium) dihydrochloride was dissolved in 100 g of distilled water, then added to the reaction vessel, and polymerized at 70° C. for 4 hours. After the reaction, the product is filtered, washed and dried to obtain a composite polymer water-absorbent resin.

[0022] Water absorption test:

[0023] time / h 2 4 8 12 16 20 24 Water absorption / g·g -1

Embodiment 2

[0025] In a reaction vessel equipped with a condensing device and a stirring device, add 500 g of reaction medium corn oil, 25 g of pentaerythritol tetraisostearate and 5 g of calcium carbonate, heat up to 70° C. and mix well. Take another 30g of N-tert-octyl acrylamide, 10g of 3-sulfonic acid propyl potassium salt, 0.015g of N,N'-ethylenebisstearamide and 0.3g of 2,2-azo(2- Methylpropylimidium) dihydrochloride was dissolved in 100 g of distilled water, then added to the reaction vessel, and polymerized at 70° C. for 4 hours. After the reaction, the product is filtered, washed and dried to obtain a composite polymer water-absorbent resin.

[0026] Water absorption test:

[0027] time / h 2 4 8 12 16 20 24 Water absorption / g·g -1

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PUM

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Abstract

The invention discloses a composite polymer water-absorbing resin containing nitrogen and potassium and a preparation method thereof, which comprises the following steps: adding a certain amount of reaction medium, dispersant and Calcium carbonate, warm up and mix. Another certain amount of nitrogen-containing monomer and 3-sulfonate propyl methacrylate potassium salt, cross-linking agent and initiator were dissolved in distilled water, then added to the reaction vessel, and polymerized for several hours. After the reaction, the product is filtered, washed, and dried to obtain a polymer water-absorbent resin. The preparation process of the invention is simple and suitable for industrialized production. The prepared polymer water-absorbing resin has high water-absorbing rate, long water-retaining time, and simultaneously contains nitrogen and potassium elements required for plant growth. The invention has good application prospects in land desertification control, soil water conservation, vegetation transplantation and the like.

Description

technical field [0001] The invention relates to a polymer water-absorbing material, in particular to a composite polymer water-absorbing resin containing nitrogen and potassium and a preparation method thereof. The water-absorbing resin has good application prospects in land desertification control, soil water conservation, vegetation transplantation and the like. Background technique [0002] Water-absorbing resin is a water-swellable polymer material that has emerged in recent years. It has special water-absorbing properties and is widely used in chemical engineering, sewage treatment, dust suppression and sand fixation, farmland and gardens, etc. As functional materials, water-absorbent resins are mostly prepared by monomer polymerization, and the monomers often have hydrophilic groups, such as sulfonic acid groups, carboxyl groups, hydroxyl groups, amino groups, etc. grid. Compared with traditional water-absorbing materials such as cotton, hemp, fiber, etc., it has inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/54C08F220/38C08F2/44C08K3/26C09K17/20C09K105/00
Inventor 尚成新
Owner SHANXI UNIV
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