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Preparation method of large-size three-dimensional network water absorbing material

A water-absorbing material, three-dimensional network technology, applied in fiber processing, textiles and papermaking, etc., can solve the problems of agglomeration, easy movement, uneven dispersion, etc., to achieve the effect of fast polymerization, improved uniformity, and simplified production process

Active Publication Date: 2015-12-02
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the present invention loads superabsorbent resin with a microscopic three-dimensional network structure on the surface of polyester nonwoven fibers with a macroscopic three-dimensional network structure by means of ultraviolet radiation, and prepares a large-scale three-dimensional network water-absorbing material. It overcomes the problems of uneven dispersion, easy movement, and agglomeration after absorbing water that are common in the sanitary industry when superabsorbent resin is used as a water-absorbing material. It is also expected to be used for water retention and sand fixation in severe desertification areas, broadening its application field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a large-scale three-dimensional network water-absorbing material, the experimental steps are:

[0020] a) Ultrasonic treatment of polyester non-woven fabric with a size of 8cm × 8cm × 0.2cm with ethanol to remove the oil on the surface, and dry it for later use; b) 4mL acrylic acid, 0.12g ammonium persulfate and 0.04g N, N' -Methylenebisacrylamide was dissolved in 50mL distilled water to form a mixed reaction solution, poured into a polypropylene bag containing the polyester nonwoven fabric treated in a) and passed through nitrogen for 10 minutes; c) Make the polyester nonwoven fabric fully After soaking, pour out the excess reaction liquid, arrange the polypropylene bag together with the polyester nonwoven in the ultraviolet irradiation device, irradiate each side for 20 minutes, and then use distilled water to remove unreacted monomers, homopolymers and impurities, and then Put it into 0.03mol / L NaOH solution and ultrasonically neutralize it for...

Embodiment 2

[0022] A method for preparing a large-scale three-dimensional network water-absorbing material, the experimental steps are:

[0023]a) Ultrasonic treatment of polyester nonwoven fabric with a size of 16cm×16cm×0.2cm with ethanol to remove the oil on the surface, and use after drying; b) 16mL acrylic acid, 0.48g ammonium persulfate and 0.16g N,N Dissolve '-methylenebisacrylamide in 200mL distilled water to form a mixed reaction solution, pour it into a polypropylene bag containing the polyester nonwoven fabric treated in a), and blow nitrogen for 10 minutes; c) make the polyester nonwoven fabric After fully soaking, pour out the excess reaction liquid, arrange the polypropylene bag together with the polyester non-woven in the ultraviolet irradiation device, irradiate each side for 20 minutes, and then use distilled water to remove unreacted monomers, homopolymers and impurities. Then put it into 0.03mol / L NaOH solution for ultrasonic neutralization for 20 minutes, and after dry...

Embodiment 3

[0025] A method for preparing a large-scale three-dimensional network water-absorbing material, the experimental steps are:

[0026] a) Ultrasonic treatment of polyester nonwoven fabric with a size of 32cm×32cm×0.2cm with ethanol for 20min to remove the oil on the surface and dry it for later use; b) 64mL acrylic acid, 1.92g ammonium persulfate and 0.64g N, Dissolve '-methylenebisacrylamide in 800mL distilled water to form a mixed reaction solution, pour it into a polypropylene bag containing the polyester nonwoven fabric treated in a) and blow nitrogen for 10 minutes; c) make the polyester nonwoven fabric After fully soaking, pour out the excess reaction liquid, arrange the polypropylene bag together with the polyester nonwoven in the ultraviolet irradiation device, irradiate each side for 30 minutes, and then use distilled water to remove unreacted monomers, homopolymers and impurities. Then put it into 0.1mol / L NaOH solution for ultrasonic neutralization for 10 minutes, and...

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Abstract

The invention relates to a preparation method of a large-size three-dimensional network water absorbing material. According to the method, an ultraviolet radiation initiation manner is adopted to aggregate water-absorbent resin with a microcosmic three-dimensional net structure onto the surface of a polyester nonwoven fiber with a macroscopic three-dimensional net structure, so as to form the large-size three-dimensional network water absorbing material. The preparation method provided by the invention has the advantages that the resource of raw materials is wide, the operation is simple and easy, the macroscopic size of the prepared water absorbing material is adjustable, the water-retaining property and the reusability under natural conditions are good, and better structural completeness is retained even after absorbing water.

Description

technical field [0001] The invention belongs to the field of water-absorbing materials, and in particular relates to a preparation method of a large-scale three-dimensional network water-absorbing material. Background technique [0002] For a long time, humans have discovered many water-absorbing and hygroscopic materials in the preservation and utilization of water, such as absorbent cotton, sponge, gelatin, calcium chloride, activated carbon, and sulfuric acid. Although these materials have a wide range of sources and are cheap and easy to obtain, their water absorption capacity is relatively weak. Generally, they can only absorb water several times to dozens of times their own weight, and their water retention capacity is poor. With the continuous development of society, these water-absorbing materials are far from meeting the needs of human production and life, so it is necessary to develop materials with better water-absorbing and water-retaining properties. [0003] S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/32C08F283/02C08F220/06C08F220/54
Inventor 魏俊富罗先建赵孔银
Owner TIANJIN POLYTECHNIC UNIV
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