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Potato waste residue/palygorskite/acrylic acid compound water absorption material and preparation method thereof

A water-absorbing material, potato technology, applied in the field of composite materials, can solve the problems of not being well utilized, energy waste, etc.

Active Publication Date: 2012-09-12
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]my country is a big agricultural country, crop straw and its waste residue as a kind of biomass energy have not been well utilized for a long time, except for a small amount of feed and fertilizer , most of them are directly incinerated or discarded, which is a great waste of energy

Method used

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  • Potato waste residue/palygorskite/acrylic acid compound water absorption material and preparation method thereof
  • Potato waste residue/palygorskite/acrylic acid compound water absorption material and preparation method thereof
  • Potato waste residue/palygorskite/acrylic acid compound water absorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Potato waste residue pretreatment

[0049] The fresh potato waste residue is pulverized with a colloid mill.

[0050] (2) Preparation of composite water-absorbing material

[0051] Weigh 1g of pretreated potato residue (dry basis weight) and add it into water to make the mass percentage of potato residue 20%; depressurize to 0.08MP in an oil bath at 75°C, gelatinize for 30min, cool to 60°C, and pour into the system Add 1.5g palygorskite, 0.008g cross-linking agent N,N′-methylenebisacrylamide and 6g acrylic acid (neutralized to 65% with NaOH solution), stir rapidly for 10min, and 2 Add 0.06g initiator potassium persulfate to the reaction system under protection, and react at 65°C until the gel polymer is formed; the gel polymer is washed 3 times with anhydrous methanol, then dried and granulated to obtain potato waste residue / Palygorskite / acrylic composite absorbent material.

[0052] (3) Water absorption performance test of composite water-absorbing materials

...

Embodiment 2

[0055] (1) Potato waste residue pretreatment

[0056] The fresh potato waste residue is pulverized with a colloid mill.

[0057] (2) Preparation of composite water-absorbing material

[0058] Weigh 1g of pretreated potato residue (dry basis weight) and add it to water so that the mass percentage of potato residue is 15%, reduce the pressure to 0.07MP in an oil bath at 65°C, gelatinize for 20min, cool down to 65°C, and pour into the system Add 0.5g palygorskite, 0.005g cross-linking agent N,N′-methylenebisacrylamide and 4g acrylic acid (neutralized to 50% with NaOH solution), stir rapidly for 8min, and 2 Add 0.04g initiator potassium persulfate to the reaction system under protection, and react at 65°C until the gel polymer is formed; the gel polymer is washed 3 times with anhydrous methanol, then dried and granulated to obtain potato waste residue / Palygorskite / acrylic composite absorbent material.

[0059] (3) Water absorption performance test of composite water-absorbing ...

Embodiment 3

[0062] (1) Potato waste residue pretreatment

[0063] The fresh potato waste residue is pulverized with a colloid mill.

[0064] (2) Preparation of composite water-absorbing material

[0065] Weigh 1 g of pretreated potato residue (dry basis weight) and add it to water so that the mass percentage of potato residue is 25%, reduce the pressure to 0.06MP in an oil bath at 70°C, gelatinize for 25 minutes, cool down to 55°C, and pour to Add 1g palygorskite, 0.006g cross-linking agent N,N′-methylenebisacrylamide and 5g acrylic acid (neutralized to 55% with NaOH solution) into the system, stir rapidly for 9min, and 2 Add 0.05g initiator potassium persulfate to the reaction system under protection, and react at 65°C until the gel polymer is formed; the gel polymer is washed 3 times with anhydrous methanol, then dried and granulated to obtain potato waste residue / Palygorskite / acrylic composite absorbent material.

[0066] (3) Water absorption performance test of composite water-abs...

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Abstract

The invention discloses a potato waste residue / palygorskite / acrylic acid compound water absorption material which is obtained by taking potato waste residues, palygorskite clay (attapulgite) and acrylic acid as raw materials through free-radical-initiated polymerization in a water solution. The pattern, the structure and the thermal stability of a compound material with high performance of water absorption are characterized by a scanning electron microscope, an infrared spectrum and thermogravimetric analysis as follows: the surface of the compound material is coarse and porous, and the inside is in a three-dimensional reticular structure; and the test result of the performance of water absorption shows that the potato waste residue / palygorskite / acrylic acid compound water absorption material prepared by the invention has better water absorption rate and water absorption capability and has potential application in the fields of farming, gardening, restoring of an environment with desertification and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a high water-absorbing composite material; in particular, it relates to a potato waste residue / palygorskite / acrylic acid composite water-absorbing material and a preparation method thereof. Background technique [0002] The superabsorbent composite material is a slightly cross-linked hydrophilic polymer with a three-dimensional network structure, and can absorb water equivalent to hundreds to thousands of times its own weight under pressure. Compared with traditional absorbent materials such as cotton, sea surface, pulp, superabsorbent composite materials have been used in baby diapers, personal care products, drug release, agriculture, horticulture, humidity sensors, human body moisture removal systems, artificial muscles and tissues due to their excellent performance It has been applied in many fields such as engineering support. [0003] Today, when the global clima...

Claims

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Application Information

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IPC IPC(8): C08F289/00C08F220/06C08F2/44C08K3/34
Inventor 雷自强沈智张哲李芳红高淑玲杨翠玲崇雅丽王其召
Owner NORTHWEST NORMAL UNIVERSITY