Method for producing high water-absorbing montmorillonite polymer

A production method and polymer technology, applied in inorganic non-metallic materials and organic fields, can solve low-level problems and achieve the effect of simple process, high added value, and no environmental pollution

Inactive Publication Date: 2003-08-27
侯太鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with foreign countries, it is still at a low level in terms of development and application. Therefore, there is a lot of room for development and application of montmorillonite.

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with embodiment.

[0020] The process for producing superabsorbent montmorillonite polymer of the present invention includes two processes of polymerization mother liquor and polymer preparation.

[0021] 1. Polymerization mother liquor preparation process

[0022] Prepare the mother liquor according to the formula, and add a cross-linking agent at a temperature of 83°C to 100°C for deep polymerization. The cross-linking agent is (NH 4 ) 2 S 2 o 8 .

[0023] The weight ratio of each component in the polymerization mother liquor is: NaOH34~47, C 3 h 4 o 2 75~98, (NH 4 ) 2 S 2 o 8 1+2, H 2 O 400~650. Component NaOH is solid.

[0024] Preparation of polymerization mother liquor can be operated according to the following steps:

[0025] a. NaOH, C 3 h 4 o 2 Add it into water not lower than 18°C ​​for stirring and miscibility to obtain C with a concentration of 20.5-27%. 3 h 4 o 2 The ...

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Abstract

The invention refers to a method of producing high-bibulous askanite polymer, including preparation of the polymeric mother liquid and the polymer. The preparing technique of the mother liquid: add in cross-linking agent to make deep polymerization on the prepared mother liquid at 83-100 deg.c, and make volatillization and condensation to prepare the polymerized mother liquid, the weight percentage of its components: (solid) NaOH 34-47, C3H4O2 75-98, (NH4)S2O81+2, and H2O 400-650. The preparation process stir evenly the components, then make polymerization at 83-100 deg.C, and make dryness and crusting to prepare the askanite polymer, charge ratio in the polymer; the mother liquid (ml) 200+A, ascanite powder (g) 10-330, cross-linking agent (g) (0.04-0.05)B.

Description

technical field [0001] The invention relates to the field of organic and inorganic non-metallic materials, in particular to a production method of superabsorbent montmorillonite polymer. Background technique [0002] Montmorillonite is a clay mineral composed of two tetrahedral sheets sandwiching an octahedral sheet. In octahedral sheets of montmorillonite, Mg 2+ to Al 2+ Replacement produces interlayer potential or end surface potential; when there is water in the interlayer, the interlayer cations are higher than the Si--O tetrahedral basal plane, and in the absence of water, the interlayer cations enter the hexagonal holes. This makes montmorillonite have: ①Good water absorption, expansion, and water holding performance. Its water absorption capacity at saturation is generally 0.5-1ml / g, and the volume expansion varies according to the type of montmorillonite, and the higher one can reach 10 to 15 times its own volume; ② Due to the existence of interlayer potential or ...

Claims

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Application Information

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IPC IPC(8): C08G83/00
Inventor 侯太鹏
Owner 侯太鹏
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