Self-floating photothermal conversion hydrogel material as well as preparation method and application thereof

A photothermal conversion and hydrogel technology, applied in the fields of polymer materials and chemical materials, can solve the problems of high preparation cost, brittle material texture and inability to be used in a large area, poor mechanical properties of graphene aerogels, etc., which is time-consuming. Short, good buoyancy and stability, good for storage and preservation

Active Publication Date: 2020-02-14
赵沐辰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of graphene airgel are poor, the texture of the material is brittle and cannot be used in a large area, and the preparation cost is high

Method used

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  • Self-floating photothermal conversion hydrogel material as well as preparation method and application thereof
  • Self-floating photothermal conversion hydrogel material as well as preparation method and application thereof
  • Self-floating photothermal conversion hydrogel material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Take 15g of polyvinyl alcohol (PVA), pour it into a three-necked flask, add 85ml of distilled water, take a constant temperature water bath at 100°C for 2 hours, stir at high speed to dissolve the PVA, and obtain a 15% aqueous solution of PVA;

[0049] (2) Weigh 14g of 15% polyvinyl alcohol (PVA) aqueous solution, grind the silica airgel (SA) until the particles are fine, and weigh 0.4g of the silica airgel. The two were uniformly mixed to obtain mixture A.

[0050] (3) Weigh 0.1g cuttlefish juice, 2g monoacrylamide, 0.03g N.N-methylene bisacrylamide, 0.04g ammonium persulfate, 0.08g polyethylene glycol dimethacrylate (PEGDA), 5.3g to Ionized water is uniformly mixed by ultrasonic waves. Then pass through nitrogen for 5 to 30 minutes to remove oxygen in the solution to obtain mixed solution B;

[0051] (4) Mix and stir the mixture A of step (2) and the mixed solution B of step (3), and use an ultrasonic instrument to sonicate for 40 minutes under the condition of ...

Embodiment 2

[0055] (1) Take 15g of polyvinyl alcohol (PVA), pour it into a three-necked flask, add 85ml of distilled water, take a constant temperature water bath at 100°C for 2 hours, stir at high speed to dissolve the PVA, and obtain a 15% aqueous solution of PVA;

[0056] (2) Weigh 14g of 15% polyvinyl alcohol (PVA) aqueous solution, grind the silica airgel to fine particles, and weigh 0.4g of silica airgel. The two were uniformly mixed to obtain mixture A.

[0057] (3) Weigh 0.2g cuttlefish juice, 2g monoacrylamide, 0.03g N.N-methylenebisacrylamide, 0.04g ammonium persulfate, 0.08g polyethylene glycol dimethacrylate (PEGDA), 5.3g to Ionized water is uniformly mixed by ultrasonic waves. Then pass through nitrogen for 5 to 30 minutes to remove oxygen in the solution to obtain mixed solution B;

[0058] (4) Mix and stir the mixture A of step (2) and the mixed solution B of step (3), and use an ultrasonic instrument to sonicate for 40 minutes under the condition of 45HZ to obtain a gel ...

Embodiment 3

[0062] (1) Take 15g of polyvinyl alcohol (PVA), pour it into a three-necked flask, add 85ml of distilled water, take a constant temperature water bath at 100°C for 2 hours, stir at high speed to dissolve the PVA, and obtain a 15% aqueous solution of PVA;

[0063] (2) Weigh 14g of 15% polyvinyl alcohol (PVA) aqueous solution, grind the silica airgel to fine particles, and weigh 0.4g of silica airgel. The two were uniformly mixed to obtain mixture A.

[0064] (3) Weigh 0.3g cuttlefish juice, 2g monoacrylamide, 0.03g N.N-methylene bisacrylamide, 0.04g ammonium persulfate, 0.08g polyethylene glycol dimethacrylate (PEGDA), 5.3g to Ionized water is uniformly mixed by ultrasonic waves. Then pass through nitrogen for 5 to 30 minutes to remove oxygen in the solution to obtain mixed solution B;

[0065] (4) Mix and stir the mixture A of step (2) and the mixed solution B of step (3), and use an ultrasonic instrument to sonicate for 40 minutes under the condition of 45HZ to obtain a gel...

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Abstract

The invention belongs to the fields of chemical materials, high polymer materials and the like, and relates to a self-floating photothermal conversion hydrogel material with improved photothermal conversion efficiencyfor seawater desalination as well as a preparation method and application of the self-floating photothermal conversion hydrogel material. The self-floating photothermal conversion hydrogel is successfully prepared in a physicochemical double-crosslinking mode by combining hydrogel matrix macromolecules and a photothermal conversion component, wherein the hydrogel matrix macromolecules are prepared by blending a hydroxyl-containing hydrophilic polymer aqueous solution in the presence of acrylamide, an initiator, a crosslinking agent and aerogel, and the photothermal conversioncomponent refers to cuttlefish juice. The prepared self-floating photothermal conversion hydrogel has good mechanical properties, good sunlight absorption performance and good water surface thermal positioning performance, the preparation process is simple, the energy consumption is low, and the self-floating photothermal conversion hydrogel has good reusability, is suitable for practical application and is an ideal choice for seawater desalination and water purification.

Description

technical field [0001] The invention belongs to the fields of chemical materials, polymer materials, etc., and relates to a self-floating photothermal conversion hydrogel material for seawater desalination with improved photothermal conversion efficiency and a preparation method and application thereof. Background technique [0002] In today's twenty-first century, the problem of lack of water resources is becoming more and more serious. In many areas, not only the quality of drinking water and domestic water cannot be guaranteed, but even the lowest standard of water per capita in the world cannot be reached. Moreover, as far as the distribution of global water resources is concerned, the water resources occupied by different regions are very uneven. Very few countries have a large amount of fresh water resources, while some poor areas are seriously short of water. Such as UAE, Egypt, Jordan, Yemen and other countries. Although our country has a vast territory but a large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/08C08F220/56C08F222/38C08F2/44C08K7/26C08K5/00C02F1/04C02F103/08
CPCC08F261/04C08F283/065C08F251/00C08F2/44C08K7/26C08K5/0008C02F1/04C02F2103/08C08F220/56C08F222/385Y02A20/124
Inventor 赵沐辰李尧赵丽媛
Owner 赵沐辰
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