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Method for applying material with regular bulge array and sliding surface to water mist collection

A regular and array technology, applied in the field of materials, can solve the problems of fluorine-containing materials, low practicability, complicated preparation steps, etc., and achieve the effect of easy-to-obtain raw materials, low cost, and reduce energy consumption

Active Publication Date: 2020-12-18
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the problems of complicated preparation steps of water-collecting materials, toxic substances such as fluorine in the prepared materials, and low practicability

Method used

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  • Method for applying material with regular bulge array and sliding surface to water mist collection
  • Method for applying material with regular bulge array and sliding surface to water mist collection
  • Method for applying material with regular bulge array and sliding surface to water mist collection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Use the template to prepare regular protrusions on the zinc sheet: first, cut the zinc sheet into 2*3cm 2 slices. Choose a formwork with 4*6 small steel balls, the diameter of the small steel balls is 1.2mm, and the distance between the steel balls is 0.5cm. Under the pressure of 13MPa, regular protrusions are pressed on the zinc sheet, and 0.2mm holes appear on the top of the protrusions. In order to remove pollutants on the surface of the zinc flakes, ultrasonically clean them with acetone, ethanol, and deionized water for 3 min, and then dry them under nitrogen flow.

[0033] 2. Prepare the surface with ZnO nanorods by chemical etching: put the zinc sheet with regular protrusions pressed by the template into the aqueous solution of formamide with a volume fraction of 3%, and keep it at 65°C for 24h. After the reaction, Take it out and wash it with ethanol, and put it into a vacuum drying oven to dry for 10 minutes.

[0034] 3. Preparation of zinc flakes with a r...

Embodiment 2

[0038] 1. Use the template to prepare regular protrusions on the zinc sheet: first, cut the zinc sheet into 2*3cm 2 slices. Choose a formwork with 4*6 small steel balls, the diameter of the small steel balls is 1.2mm, and the distance between the steel balls is 0.5cm. Under the pressure of 13MPa, regular protrusions are pressed on the zinc sheet, and 0.2mm holes appear on the top of the protrusions. In order to remove pollutants on the surface of the zinc flakes, ultrasonically clean them with acetone, ethanol, and deionized water for 3 min, and then dry them under nitrogen flow.

[0039] 2. Prepare the surface with ZnO nanorods by chemical etching: put the zinc sheet with regular protrusions pressed by the template into the aqueous solution of formamide with a volume fraction of 3%, and keep it at 65°C for 24h. After the reaction, Take it out and wash it with ethanol, and put it into a vacuum drying oven to dry for 10 minutes.

[0040] 3. Preparation of zinc flakes with a r...

Embodiment 3

[0044] 1. Use the template to prepare regular protrusions on the zinc sheet: first, cut the zinc sheet into 2*3cm 2 slices. Choose a formwork with 4*6 small steel balls, the diameter of the small steel balls is 1.2mm, and the distance between the steel balls is 0.5cm. Under the pressure of 13MPa, regular protrusions are pressed on the zinc sheet, and 0.2mm holes appear on the top of the protrusions. In order to remove pollutants on the surface of the zinc flakes, ultrasonically clean them with acetone, ethanol, and deionized water for 3 min, and then dry them under nitrogen flow.

[0045] 2. Prepare the surface with ZnO nanorods by chemical etching: put the zinc sheet with regular protrusions pressed by the template into the aqueous solution of formamide with a volume fraction of 3%, and keep it at 65°C for 24h. After the reaction, Take it out and wash it with ethanol, and put it into a vacuum drying oven to dry for 10 minutes.

[0046] 3. Preparation of zinc flakes with a r...

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Abstract

The invention provides a method for applying a material with a regular bulge array and a sliding surface to water mist collection. The method comprises the steps of preparing zinc oxide nanorods and copper hydroxide nanowires, grafting polydimethylsiloxane (PDMS) and the like. The material with the regular bulge array and the sliding surface not only has excellent weather resistance, but also hasbetter oil locking capacity after the surface of the material is coated with silicone oil, and still has stable sliding capacity after being placed for a long time; in addition, unique droplet directional pumping is shown on the sliding surface, the droplets no longer rely on additional energy input, droplet coagulation or merging, and directional transportation of tiny droplets is achieved; and super-hydrophilic conical copper needles are vertically inserted into the centers of protrusions, condensation and transportation of liquid drops at the tops of the protrusions are promoted, and the overall process of mist collection is improved. Therefore, based on the stable and efficient water mist collecting capacity and the long-term stable wettability of the material surface, and the water mist collecting combination can be popularized on a large scale.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to two types of weather-resistant materials with regular protrusion arrays and sliding surfaces, a superhydrophilic conical copper needle and a preparation method for a water mist collecting device thereof. Background technique [0002] Materials with water-harvesting properties have received more and more attention in recent years, and the water mist collection process can be divided into three parts: water droplet capture, water droplet supply (condensation), and water droplet transport collection. However, many studies now focus on a certain process of water mist collection. Most of the existing wettable surfaces can only transport droplets in one direction and perform a single function, and cannot realize multidirectional manipulation of droplets and perform multiple tasks at the same time. Some approaches that rely on droplet coalescence or condensation growth to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/68C23C22/63C23C22/78E03B3/28
CPCC23C22/68C23C22/63C23C22/78E03B3/28
Inventor 郭志光周慧
Owner HUBEI UNIV
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