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A kind of method utilizing reed to prepare super absorbent resin

A technology of superabsorbent resin and reed, which is applied in the field of water-absorbing and water-retaining materials, can solve the problems of dry farming agricultural production difficulties, low survival rate of afforestation, soil erosion, etc., achieve good biocompatibility and degradability, and solve land desertification , the effect of high water retention rate

Active Publication Date: 2016-04-13
江苏溢坤医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the present invention proposes a new type of superabsorbent resin prepared by using reed as raw material, and uses the new type of superabsorbent resin as a water-absorbing and water-retaining material to solve land desertification, low survival rate of afforestation, dry farming, etc. Agricultural production difficulties, serious soil erosion and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Harvest and dry the reeds;

[0022] (2) crushing and sieving the dried reeds;

[0023] (3) Immerse the sieved reed in a sodium hydroxide solution with a mass concentration of 20%, cook and stir for 30 minutes at a temperature of 110° C., so that the reed is fully swollen in the lye, and the crystal structure of the reed is destroyed at the same time, Improve accessibility and reactivity, thereby increasing the grafting rate of reeds and the water absorption rate of water-absorbing agents;

[0024] (4) Wash the boiled reed to neutrality and immerse it in deionized water, and gelatinize it for 5 minutes under the microwave radiation of 300W power;

[0025] (5) immerse the gelatinized substance into the mixed solution of potassium persulfate with a mass concentration of 20% and cerium amine nitrate with a mass concentration of 20%, and stir for 30 minutes at 30°C;

[0026] (6) Add a sodium sulfite solution with a mass concentration of 20% to the reactant in step (5),...

Embodiment 2

[0034] (1) Harvest and dry the reeds;

[0035] (2) crushing and sieving the dried reeds;

[0036] (3) Immerse the sieved reeds in a sodium hydroxide solution with a mass concentration of 25%, cook and stir for 40 minutes at a temperature of 130°C, so that the reeds are fully swollen in the lye, and at the same time destroy the crystal structure of the reeds, Improve accessibility and reactivity, thereby increasing the grafting rate of reeds and the water absorption rate of water-absorbing agents;

[0037] (4) Wash the boiled reed to neutrality and immerse it in deionized water, and gelatinize it for 8 minutes under the microwave radiation of 400W power;

[0038] (5) Immerse the gelatinized substance in a mixed solution of potassium persulfate with a mass concentration of 30% and a mass concentration of 25% cerium amine nitrate, and stir for 30 minutes at 50°C;

[0039] (6) Add a sodium sulfite solution with a mass concentration of 30% to the reactant in step (5), and stir fo...

Embodiment 3

[0047] (1) Harvest and dry the reeds;

[0048] (2) crushing and sieving the dried reeds;

[0049] (3) Immerse the sieved reeds in a sodium hydroxide solution with a mass concentration of 30%, cook and stir for 45 minutes at a temperature of 150° C., so that the reeds are fully swollen in the lye, and at the same time destroy the crystal structure of the reeds, Improve accessibility and reactivity, thereby increasing the grafting rate of reeds and the water absorption rate of water-absorbing agents;

[0050] (4) Wash the boiled reed to neutrality and immerse it in deionized water, and gelatinize it for 10 minutes under the microwave radiation of 600W power;

[0051] (5) Immerse the gelatinized substance in a mixed solution of potassium persulfate with a mass concentration of 40% and a mass concentration of 30% cerium amine nitrate, and stir for 30 minutes at 60°C;

[0052] (6) Add a sodium sulfite solution with a mass concentration of 40% to the reactant in step (5), and stir...

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Abstract

The invention relates to the technical field of water-absorbent and water-retaining materials. The method for preparing a high water absorbent resin by using reeds, disclosed by the invention, uses the reeds to prepare the high water absorbent resin, and comprises the steps of firstly harvesting, drying, crushing and sieving the reeds, immersing the reeds in a sodium hydroxide solution, stewing and stirring to ensure that the reeds are fully swelled in an alkali liquor, immersing the stewed reeds in deionized water, gelatinizing under microwave irradiation, then adding potassium persulfate, cerous ammonium nitrate and a neutralized acrylic acid solution, then adding acrylamide, an N, N'-methylene bisacrylamide solution and a foaming agent, and dehydrating, drying, crushing and sieving the final product to obtain the high water absorbent resin. The high water absorbent resin has the characteristics of good water absorption capability, high water absorption speed, excellent water retaining capability, strong antimycotic capability, easiness in degradation and the like, and can be widely applied to the fields of sanitary products, agriculture, horticulture, land desertification prevention and treatment and the like.

Description

technical field [0001] The invention relates to the technical field of water-absorbing and water-retaining materials, in particular to a method for preparing superabsorbent resin by using reeds. Background technique [0002] Superabsorbent resin is prepared by grafting acrylic acid with cellulose as the skeleton. It is a polymer containing strong hydrophilic groups such as hydroxyl and carboxyl groups and has a certain cross-linked network structure. It can absorb dozens of times its own weight or even Thousands of times water, has the characteristics of fast water absorption, good water retention, strong anti-mold ability, easy to degrade, etc., and has the functions of slow release, adsorption, and dehumidification. It has been widely used in hygiene products, agriculture and gardening, and land desertification. At the same time, when used as a water-retaining material, the released nitrogen and phosphorus can promote the growth of plants. At present, the research on supe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/02C08F220/06C08F220/56C08F222/38
Inventor 万玉山黄利涂保华邵敏王莉
Owner 江苏溢坤医疗科技有限公司
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