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Flexible photo-thermal absorption material and preparation method and application thereof

A technology of absorbing materials and light and heat, applied in chemical instruments and methods, metal material coating technology, solar thermal power generation, etc., can solve the problems of reduced efficiency of evaporation system and increased heat loss, and achieve low raw material cost and high light absorption performance , The effect of simple process

Active Publication Date: 2021-09-17
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to Kirchhoff's law, these ultra-black adsorbents exhibit high absorption over a wide range of wavelengths covering the full solar spectrum and the long-wave infrared region, but absorb solar energy while acting as black bodies in the infrared region to dissipate heat through thermal radiation, resulting in increased heat loss and overall evaporation Reduced system efficiency

Method used

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  • Flexible photo-thermal absorption material and preparation method and application thereof
  • Flexible photo-thermal absorption material and preparation method and application thereof
  • Flexible photo-thermal absorption material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of Ag / Zn SSACs-PF flexible photothermal absorber:

[0044] cleaning substrate

[0045] In a digitally controlled ultrasonic cleaner with a frequency of 30kHz, use deionized water, acetone, and ethanol to clean the cloth for 20 minutes, 20 minutes, and 10 minutes in sequence, and then put it into an oven to dry at 40°C.

[0046] Ag / Zn SSACs-PF, a flexible photothermal absorbing material obtained by magnetron sputtering coating:

[0047] First, use the mechanical pump and the molecular pump to pump the vacuum of the sputtering chamber to 9.0×10 -4 Pa, then pass Ar as the sputtering gas, and bombard it for 20 minutes in the Ar plasma atmosphere to remove impurities on the polyester cloth substrate and improve the bonding force between the coating and polyester, wherein the bias voltage is set to 450V, and the air pressure is set to 5Pa.

[0048] Then, continue to adjust the pressure in the vacuum chamber to the required air pressure of 0.6Pa for sputtering, a...

Embodiment 2

[0053] Preparation of Ag / Zn SSACs-PF flexible photothermal absorber:

[0054] cleaning substrate

[0055] In a digitally controlled ultrasonic cleaner with a frequency of 30kHz, use deionized water, acetone, and ethanol to clean the cloth for 20 minutes, 20 minutes, and 10 minutes in sequence, and then put it into an oven to dry at 40°C.

[0056] Ag / Zn SSACs-PF, a flexible photothermal absorbing material obtained by magnetron sputtering coating:

[0057] First, use the mechanical pump and the molecular pump to pump the vacuum of the sputtering chamber to 9.0×10 -4 Pa, then pass Ar as the sputtering gas, and bombard it for 20 minutes in the Ar plasma atmosphere to remove impurities on the polyester cloth substrate and improve the bonding force between the coating and polyester, wherein the bias voltage is set to 450V, and the air pressure is set to 5Pa.

[0058] Then, continue to adjust the pressure in the vacuum chamber to the required air pressure of 0.6Pa for sputtering, a...

Embodiment 3

[0063] Preparation of Ag / Zn SSACs-PF photothermal material:

[0064] cleaning substrate

[0065] In a digitally controlled ultrasonic cleaner with a frequency of 30kHz, use deionized water, acetone, and ethanol to clean the cloth for 20 minutes, 20 minutes, and 10 minutes in sequence, and then put it into an oven to dry at 40°C.

[0066] Ag / Zn SSACs-PF, a flexible photothermal absorbing material obtained by magnetron sputtering coating:

[0067] First, use the mechanical pump and the molecular pump to pump the vacuum of the sputtering chamber to 9.0×10 -4 Pa, then pass Ar as the sputtering gas, and bombard it for 20 minutes in the Ar plasma atmosphere to remove impurities on the polyester cloth substrate and improve the bonding force between the coating and polyester, wherein the bias voltage is set to 450V, and the air pressure is set to 5Pa.

[0068] Then, continue to adjust the pressure in the vacuum chamber to the required air pressure of 0.6Pa for sputtering, and set th...

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Abstract

The invention discloses a flexible photo-thermal absorption material and a preparation method and application thereof, and belongs to the field of photo-thermal materials. The preparation method comprises the following steps that 1) a polymer substrate is cleaned to obtain a clean polymer substrate, Ar is used as sputtering gas, impurities on the clean polymer substrate are removed, pre-sputtering treatment is performed on an Ag target and a Zn target to obtain an Ag target material and a Zn target material of an oxide layer on the surface of a target material are removed; and 2) the Ag target is firstly sputtered on the clean polymer substrate under the condition of a direct-current power supply, and then the Zn target is sputtered under the condition of a radio-frequency power supply to prepare the flexible photo-thermal absorption material. The flexible photo-thermal absorption material prepared by the method has an excellent spectrum selective absorption function, and realizes the synergistic effect of high absorption rate and low thermal radiation, so that the flexible photo-thermal absorption material can be applied to seawater desalination.

Description

technical field [0001] The invention belongs to the field of photothermal materials, and relates to a flexible photothermal absorption material and a preparation method and application thereof. Background technique [0002] With the continuous acceleration of the modern industrialization process, serious water pollution and shortage of water resources follow. So far, the shortage of fresh water resources is still one of the most serious resource problems in the world, which has threatened human production, life and even national strategic security. 97% of the water resources on the earth's surface are concentrated in the ocean. In order to alleviate the shortage of water resources, researchers have turned their attention to the ocean. The purification of fresh water resources from seawater has become the main line of current water resources development. In recent years, the use of solar-driven interfacial steam generation (SISG) to evaporate seawater or brackish water has ...

Claims

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Application Information

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IPC IPC(8): C23C14/20C23C14/16C23C14/02C23C14/35F24S70/25C02F1/14C02F103/08
CPCC23C14/205C23C14/165C23C14/022C23C14/352F24S70/25C02F1/14C02F2103/08Y02A20/212Y02A20/124Y02A20/142Y02E10/40
Inventor 卫丹王成兵
Owner SHAANXI UNIV OF SCI & TECH
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