A kind of self-floating photothermal conversion hydrogel material and preparation method and application thereof

A photothermal conversion and hydrogel technology, which is applied in the fields of polymer materials and chemical materials, can solve the problems of poor mechanical properties of graphene aerogels, brittle materials that cannot be used in large areas, and high preparation costs, and is conducive to storage. and preservation, good flotation and stability, short time-consuming effect

Active Publication Date: 2022-07-15
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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  • A kind of self-floating photothermal conversion hydrogel material and preparation method and application thereof
  • A kind of self-floating photothermal conversion hydrogel material and preparation method and application thereof
  • A kind of self-floating photothermal conversion hydrogel material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0049] (2) 14 g of a 15% polyvinyl alcohol (PVA) aqueous solution was weighed, the silica aerogel (SA) was ground to fine particles, and 0.4 g of the silica aerogel was weighed. Mix the two uniformly to obtain mixture A.

[0050] (3) Weigh 0.1g squid juice, 2g monoacrylamide, 0.03g N.N-methylenebisacrylamide, 0.04g ammonium persulfate, 0.08g polyethylene glycol bismethacrylate (PEGDA), 5.3g Ionized water is uniformly mixed with ultrasonic waves. Then, nitrogen gas was introduced for 5 to 30 minutes to remove the oxygen in the solution to obtain mixed solution B;

[0051] (4) mixing and stirring the mixture A of step (2) and the mixed solution B of step (3), and ultrasonically treating it with a sonicator for 40 min under the conditi...

Embodiment 2

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

[0056] (2) 14 g of a 15% polyvinyl alcohol (PVA) aqueous solution was weighed, the silica aerogel was ground to fine particles, and 0.4 g of the silica aerogel was weighed. Mix the two uniformly to obtain mixture A.

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

[0058] (4) mixing and stirring the mixture A of step (2) and the mixed solution B of step (3), and ultrasonically treating it with a sonicator for 40 min under the condition of...

Embodiment 3

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

[0063] (2) 14 g of a 15% polyvinyl alcohol (PVA) aqueous solution was weighed, the silica aerogel was ground to fine particles, and 0.4 g of the silica aerogel was weighed. Mix the two uniformly to obtain mixture A.

[0064] (3) Weigh 0.3g squid juice, 2g monoacrylamide, 0.03g N.N-methylenebisacrylamide, 0.04g ammonium persulfate, 0.08g polyethylene glycol bismethacrylate (PEGDA), 5.3g Ionized water is uniformly mixed with ultrasonic waves. Then, nitrogen gas was introduced for 5 to 30 minutes to remove the oxygen in the solution to obtain mixed solution B;

[0065] (4) mixing and stirring the mixture A of step (2) and the mixed solution B of step (3), and ultrasonically treating it with a sonicator for 40 min under the condition of...

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Abstract

The invention belongs to the fields of chemical materials, polymer materials and the like, and relates to a self-floating photothermal conversion hydrogel material for improving photothermal conversion efficiency for seawater desalination, and a preparation method and application thereof. The self-floating photothermal conversion hydrogel was successfully prepared by means of physical and chemical double crosslinking. The self-floating photothermal conversion hydrogel was obtained by combining the macromolecules of the hydrogel matrix and the photothermal conversion components. The macromolecules are prepared by blending a hydroxyl-containing hydrophilic polymer aqueous solution in the presence of acrylamide, an initiator, a cross-linking agent and aerogel, and the photothermal conversion component is cuttlefish juice. The self-floating photothermal conversion hydrogel prepared by the invention has good mechanical properties, good sunlight absorption properties and good water surface thermal positioning properties, simple preparation process, low energy consumption, good reusability, and is suitable for practical applications. application. The self-floating photothermal conversion hydrogel of the present invention 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 and the like, and relates to a self-floating photothermal conversion hydrogel material for improving photothermal conversion efficiency for seawater desalination, and a preparation method and application thereof. Background technique [0002] In today's 21st century, the problem of water scarcity is becoming more and more serious. In many areas, not only the quality of human drinking water and domestic water cannot be guaranteed, but even the world's per capita minimum standards for water use cannot be met. Moreover, in terms of the distribution of global water resources, the water resources occupied by different regions are very uneven. Very few countries have a large amount of freshwater resources, while some poor areas are seriously short of water. Such as the United Arab Emirates, Egypt, Jordan, Yemen and other countries. Although my country has a vast territory but a la...

Claims

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Application Information

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Patent Type & Authority Patents(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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