Method for preparing high water-absorption resin for soilless culture

A technology of superabsorbent resin and soilless cultivation, which is applied in the field of preparation of superabsorbent resin for soilless cultivation, and can solve the problems of easy hardening of soilless cultivation medium, poor water retention performance, environmental pollution of chemical fiber textile waste, etc.

Inactive Publication Date: 2005-06-29
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 92100088.X discloses a medium product for soilless cultivation, which is made of chemical fiber textile waste or cutting waste. The soilless cultivation medium produced by this method is easy to harden, and its own water retention performance is relatively poor In addition, chemical fiber textile waste is also easy to bring certain pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Weigh 15g of methacrylic acid and 15g of acrylamide, add calcium hydroxide to adjust the pH value to 6, add 0.01% of the weight of acrylic acid monomer epichlorohydrin, then sequentially add 0.05% of the weight of acrylic acid monomer of potassium persulfate, acrylic acid monomer Add water to 0.05% ammonium bisulfite by weight, so that the concentration of acrylic acid monomer in the solution is 10%, then add 0.05g rhodamine, initiate polymerization at 55°C, react for 3 hours, and obtain pink crystal mud with a water absorption ratio of 65 times.

Embodiment 2

[0009] Weigh 10g of methacrylic acid and 25g of acrylamide, add potassium hydroxide to adjust the pH value to 8, add 0.1% methylene bisacrylamide by weight of acrylic acid monomer, then add sodium persulfate of 0.5% by weight of acrylic acid monomer in turn, Acrylic acid monomer weight 0.3% potassium metabisulfite, add water to make the solution acrylic acid monomer concentration 50%, then add 1g carmine, initiate polymerization at 25°C, react for 4 hours, and obtain red crystal mud with a water absorption ratio of 40 times.

Embodiment 3

[0011] Weigh 10g of methacrylic acid and 30g of acrylamide, add sodium hydroxide to adjust the pH value to 7, add 0.35% of the weight of acrylic acid monomer glycerol, and then add 0.25% of the weight of acrylic acid monomer of potassium persulfate, acrylic acid monomer 0.15% by weight of sodium metabisulfite, add water to make the solution acrylic acid monomer concentration 30%, then add 0.3g brilliant blue, initiate polymerization at 35°C, react for 3 hours, and the water absorption ratio of blue crystal mud is 55 times.

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Abstract

The invention relates to a method for preparing resin with high absorptive for soiless culture. Prepare the mixed solution of methacrylic acid and acrylamide, add into calcium hydroxide, potassium hydroxide, sodium hydroxide or ammonium hydroxide to adjust the PH value of 6-8, then add into cross linking reagent which is 0.01%-1% of acrylic acid monomer mass, then add into initiator and additive and colours med, such as carmine, rhodamine, blue,methyl red and grape purple, wait for the synthesizing reaction in 25-55deg.C for 3-5h, generating the colourful resin with high absorptive whose water absorption time is 40-80

Description

technical field [0001] The invention relates to a preparation method of a superabsorbent resin for soilless cultivation. Background technique [0002] The super absorbent resin for soilless cultivation has regular appearance and strong elasticity after absorbing water. Due to its own water retention performance, it can be widely used in soilless cultivation of ornamental flowers and plants, which can effectively beautify the living environment and improve indoor air quality. , It can also save water, clean and hygienic, neither pollute the environment nor pollute the environment. Chinese patent 92100088.X discloses a medium product for soilless cultivation, which is made of chemical fiber textile waste or cutting waste. The soilless cultivation medium produced by this method is easy to harden, and its own water retention performance is relatively poor , In addition, chemical fiber textile waste is also easy to bring certain pollution to the environment. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08F220/10C08F220/56
Inventor 李志强谭颖牛艳奔郭永利张志成潘振远刘秀霞
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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