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Preparation method of surface modified super water absorbent resin

A technology of super absorbent resin and surface modification, applied in the field of preparation of surface modified super absorbent resin, can solve the problems of breeding bacteria and mildew, and achieve the effects of cost saving, simple process, and large-scale production and promotion value.

Inactive Publication Date: 2018-03-20
SHAANXI YIPINDA PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since starch is a kind of polysaccharide, it is easy to provide carbon and nitrogen sources for microorganisms, so starch-based superabsorbent resins are easy to breed bacteria and mildew, causing great problems for the use and storage of starch-based superabsorbent resins.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0013] A method for preparing a surface-modified superabsorbent resin, comprising the steps of:

[0014] (1) Based on the mass of acrylic acid, weigh 5% to 20% of the mass of acrylic acid and put it into a beaker, add 9mL of distilled water, stir well and then gelatinize at 65~90°C;

[0015] (2) Measure 5mL of acrylic acid, use KOH solution to make a neutralization solution with a neutralization rate of 65% to 80%, after cooling to room temperature, pour it into the gelatinized starch, add 0.1% to 0.7% of acrylic acid mass to initiate 0.005%~0.05% cross-linking agent and acrylic acid mass, stir until viscous, put into 65~80°C water bath to react; take out the product, dry it in the oven, crush, sieve, and set aside;

[0016] (3) Weigh 0.1 g of starch-grafted superabsorbent resin into a beaker, add 1 mL of Sophora flavescens total alkali solution with a concentration of 2.57-41.04 mg / mL and 200 mL of distilled water, stir well, place it for 1 day, and then transfer it to an ove...

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Abstract

The invention discloses a method for preparing a surface-modified superabsorbent resin, which belongs to the field of material preparation. It is characterized in that: acrylic acid is added to distilled water, stirred evenly and then gelatinized; neutralized liquid is made with potassium hydroxide solution, after cooling to room temperature, gelatinized starch is poured in, initiator and crosslinking agent are added, and stirred until viscous Afterwards, react in a water bath; take out the product, dry it in an oven, crush it, and sieve it; add the total alkali solution of Sophora flavescens and distilled water, stir it fully, place it, then transfer it to an oven for drying, crush it, and sieve it. Through the effective improvement of the preparation process, the prepared superabsorbent resin has antibacterial performance, and the antibacterial performance is good, which effectively solves the problem that the starch-based superabsorbent resin is prone to bacteria and mildew during use and storage. The preparation method of the surface-modified superabsorbent resin described above is simple in process, saves cost, and has great production promotion value.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a method for preparing a surface-modified superabsorbent resin. Background technique [0002] With the rapid development of science and technology, various new materials have been applied. Superabsorbent resin is a kind of functional polymer material with a certain degree of crosslinking, insoluble in water and water-absorbing swelling. It can absorb a large amount of water. At present, it has been used in medical It is widely used in the fields of sanitation, agriculture, forestry and gardening, food processing, environmental protection, beauty and cosmetics, civil engineering and construction, and oil exploitation. Starch-based superabsorbent resin mainly refers to a type of polymer material formed by grafting and copolymerizing starch with other monomers. In addition to the advantages of high water absorption and strong water retention of synthetic superabsorbent resins, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F222/38C08K5/3432
CPCC08F251/00C08K5/3432C08F220/06
Inventor 李长英
Owner SHAANXI YIPINDA PETROCHEM CO LTD
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