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Method for adopting inverse suspension polymerization to prepare humic acid super absorbent resin

A technology of reverse suspension polymerization and superabsorbent resin, which is applied in the field of preparation of humic acid superabsorbent resin, which can solve the problems of difficulty in meeting water absorption requirements, poor salt resistance, and alkali resistance, so as to realize rational utilization and improve performance , cost reduction effect

Inactive Publication Date: 2017-03-22
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this water-retaining agent has a high absorption capacity for deionized water, its salt and alkali resistance is poor, and it is difficult to meet the water absorption requirements in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Take the weathered coal, and perform grinding, sieving and drying treatment on the obtained weathered coal in turn to obtain the weathered coal powder; wherein, the sieve with an average aperture of 180 μm is used for sieving;

[0065] The weathered pulverized coal is added to the concentrated nitric acid, and the addition standard is: 2.5 mL of concentrated nitric acid is required for each gram of the weathered pulverized coal. The mass percentage concentration of concentrated nitric acid is 65%; the weathered pulverized coal-nitric acid mixture is placed in a container, and the container with the weathered pulverized coal-nitric acid mixture is placed in a water-bath constant temperature oscillator to make the weathered pulverized coal-nitric acid The mixture is subjected to an oxygenolysis reaction under the condition of a constant temperature water bath to obtain a precipitate, wherein the temperature of the constant temperature water bath is 90°C, and the time of th...

Embodiment 2

[0069] Take the weathered coal, and perform grinding, sieving and drying treatment on the obtained weathered coal in turn to obtain the weathered coal powder; wherein, the sieve with an average aperture of 180 μm is used for sieving;

[0070] The weathered pulverized coal is added to the concentrated nitric acid, and the addition standard is: 2.5 mL of concentrated nitric acid is required for each gram of the weathered pulverized coal. The mass percentage concentration of concentrated nitric acid is 66%; the weathered coal powder-nitric acid mixture is placed in a container, and the container with the built-in weathered coal powder-nitric acid mixture is placed in a water bath constant temperature oscillator to make the weathered coal powder-nitric acid The mixture is subjected to an oxygenolysis reaction under the condition of a constant temperature water bath to obtain a precipitate, wherein the temperature of the constant temperature water bath is 100°C, and the time of the ...

Embodiment 3

[0074] Take the weathered coal, and perform grinding, sieving and drying treatment on the obtained weathered coal in turn to obtain the weathered coal powder; wherein, the sieve with an average aperture of 180 μm is used for sieving;

[0075]The weathered pulverized coal is added to the concentrated nitric acid. The addition standard is: 3 mL of concentrated nitric acid is required per gram of the weathered pulverized coal. The mass percentage concentration of nitric acid is 68%; the weathered coal powder-nitric acid mixture is placed in a container, and the container with the built-in weathered coal powder-nitric acid mixture is placed in a water-bath constant temperature oscillator to make the weathered coal powder-nitric acid mixture The material is subjected to an oxygenolysis reaction under the condition of a constant temperature water bath to obtain a precipitate, wherein the temperature of the constant temperature water bath is 110°C, and the time of the oxygenolysis rea...

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PUM

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Abstract

The invention discloses a method for adopting an inverse suspension polymerization to prepare humic acid super absorbent resin. The preparing method specifically comprises the first step of taking decomposed coal, and conducting grinding, sieving and drying treatment in sequence on the obtained decomposed coal to obtain decomposed coal powder; the second step of extracting humic acid in the decomposed coal powder through an oxido-degradation with a nitric acid method after obtaining the decomposed coal powder from the first step; the third step of using acrylic monomer and the humic acid from the second step as the raw material, using N,N'-Methylenebisacrylamide solution as a cross-linking agent, using potassium persulfate solution as an initiator, using span-60 as a dispersing agent and using a sodium hydroxide solution as a neutralizer, and preparing humic acid super absorbent resin through the inverse suspension polymerization in cyclohexane. According to the method for adopting the inverse suspension polymerization to prepare humic acid super absorbent resin, inverse suspension polymerization is adopted to prepare the humic acid super absorbent resin, decomposed coal humid acid is used as a raw material, the humic acid super absorbent resin is prepared on the basis of inverse suspension polymerization, and performance of water-absorbent resin is thus effectively improved.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of resin materials, and in particular relates to a method for preparing humic acid superabsorbent resin by reverse suspension polymerization. Background technique [0002] Superabsorbent resin is a new type of functional polymer material. It can absorb water tens to thousands of times its own weight in a short period of time to form a water-absorbing gel. The gel will not dissolve in water and has good water retention. Therefore, It has broad application prospects in agriculture and ecological restoration. Although this water-retaining agent has a high absorption capacity for deionized water, its salt and alkali resistance is poor, and it is difficult to meet the water absorption requirements in practical applications. [0003] Humic acid is a natural macromolecular aromatic and hydroxycarboxylic acid mixture, which has a variety of active groups and endows humic acid with multiple fu...

Claims

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Application Information

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IPC IPC(8): C08F289/00C08F226/06C08F222/38C08F2/14C08H99/00
CPCC08F289/00C08H99/00C08F226/06C08F222/385C08F2/14
Inventor 郭雅妮同帜王理明马畅柠
Owner XI'AN POLYTECHNIC UNIVERSITY
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