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Agricultural high-hygroscopicity resin

A superabsorbent resin and polymer technology, applied in the field of functional polymer materials, can solve the unsolved problems of biocompatibility, achieve high gel strength and salt resistance, chemical stability, and good biocompatibility sexual effect

Inactive Publication Date: 2007-08-22
安徽省农业科学院原子能农业应用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above modification is still based on the modification of AA as the main monomer, and its biocompatibility problem has not yet been resolved.

Method used

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  • Agricultural high-hygroscopicity resin
  • Agricultural high-hygroscopicity resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Non-limiting examples are described as follows:

[0015] (1) Radiation polymerization

[0016] 1. Take 0.75 mol of AMPS and 0.25 mol of AM, put them into a radiation bottle, add water to dissolve and adjust the total monomer concentration, and then place the cobalt source room in the cobalt source room to irradiate for a certain period of time after deoxidizing with nitrogen. When the radiation dose reaches 3.5-5.5KGy After the polymerization is completed, take out the jelly and crush it, dry it and crush it to get the product.

[0017] 2. Put 0.6mol of AMPS and 0.4mol of AM into a radiation bottle, add water to dissolve, add 1.5% crosslinking agent PEGDA (polyethylene glycol diacrylate, use 5% aqueous solution), add water to adjust the total monomer concentration, After nitrogen deoxidation, irradiate for a certain period of time at a predetermined dose rate in the cobalt source room. When the total radiation dose reaches 1.0-2.0KGy, the polymerization is completed. T...

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Abstract

An agricultural high-water adsorption resin achieves good gel strength, salt-proof performance, chemical stability and biological compatibility. The resin is prepare by cross-link polymerizing AMPS with AM, of which mol ratio is 100-0.1:0-99.9. Ionic water adsorption of the resin can reach 3000-4000 times and water salt adsorption(0.9%Nacl) can reach 100-200 times. It can be used for drought-resistant, water retaining and desert managing materials.

Description

1. Technical field [0001] The invention relates to a functional polymer material, in particular to a functional superabsorbent resin, specifically an agricultural superabsorbent resin. 2. Background technology [0002] Superabsorbent (SAP) is a functional polymer material, and its essence is a body-shaped polymer with a low cross-linking density. There are many hydrophilic groups in its cross-linked three-dimensional network structure, but It is insoluble in water, but swells with water, and can absorb water hundreds or even thousands of times its own weight. The absorbed water is not easy to be squeezed out when it is under pressure. [0003] At present, superabsorbent resins on the market are mainly obtained by crosslinking and copolymerizing acrylic acid (AA) monomers or monomers that can be hydrolyzed into acrylic acid such as acrylonitrile (AN) with other monomers ("Super Absorbent Agent" Zou Xinxi 1991. Chemical Industry Press). When acrylic acid is used as the main ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56
Inventor 李布青杨剑波郭肖颖吴李君余增亮
Owner 安徽省农业科学院原子能农业应用研究所