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Method for modifying surface of absorption resin of sodium polyacrylate

A technology of sodium polyacrylate and water-absorbent resin, which is applied in the field of surface modification of sodium polyacrylate water-absorbent resin, can solve the problems of no surface treatment, etc., and achieve the effects of improving liquid permeability, good thermal stability, and excellent comprehensive performance

Active Publication Date: 2005-11-16
SHANDONG HAOYUE NEW MATERIALS CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no effective method for surface treatment

Method used

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  • Method for modifying surface of absorption resin of sodium polyacrylate
  • Method for modifying surface of absorption resin of sodium polyacrylate

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Experimental program
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Embodiment Construction

[0024] The surface modification method of sodium polyacrylate water-absorbing resin has the following steps:

[0025] 1), preparation of treatment solution A:

[0026] Methanol was selected as the dispersant, epichlorohydrin was selected as the cross-linking agent, and DMP-30 was used as the cross-linking accelerator; the dispersant, cross-linking agent, and cross-linking accelerator were placed in a glass container and stirred to prepare treatment solution A;

[0027] 2), preparation of treatment solution B:

[0028] Put deionized water in a glass container and heat to 90°C, weigh aluminum sulfate or aluminum sulfate aluminum oxide and the second crosslinking agent glycerin, add to the above deionized water and stir, and prepare treatment solution B;

[0029] 3) Treatment of the water-absorbing resin by the treatment liquid:

[0030] Take 60-100KG of water-absorbing resin and place it in a mixer at 200-380 rpm. While stirring, spray the treatment solution A and treatment so...

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Abstract

A process for modifying the surface of hydroscopic sodium polyacrylate resin in order to improve its water permeability, hydroscopic speed, water-preserving nature and gel strength includes preparing the treating liquid A from methanol or ethanol, dichloroisopropanol or epoxy chloropropane and DMP-30 through mixing and stirring, preparing the treating liquid B from hot deionized water, multi-valence metal salt, and the second cross-coupling agent through stirring, stirring hydroscopic resin while sequentially spraying the treating agent A and B, and cross-linking reaction.

Description

[0001] Field [0002] The invention relates to the production field of sodium polyacrylate water-absorbent resin, in particular to a method for surface modification of sodium polyacrylate water-absorbent resin. Background technique [0003] Sodium polyacrylate water-absorbent resin, due to its excellent water absorption, has been successfully added to various papers and fibers for many years to manufacture hygienic products with excellent performance, such as baby diapers, sanitary napkins, etc., in agriculture, It has broad application prospects in various aspects such as industry, construction, medicine, daily necessities, food, and light industry. [0004] There are many ways to produce water-absorbent resins, such as: (1) Synthetic water-absorbent resins are easy to absorb moisture and become damp in the air, stick to each other and form a group, and have poor liquid permeability. , resulting in a significant reduction in the water absorption rate and water absorption spe...

Claims

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Application Information

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IPC IPC(8): C08J3/24
Inventor 杨志亮周晓东张香
Owner SHANDONG HAOYUE NEW MATERIALS CO LTD
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