Functional interface for capturing and self-driven directional collection of mist droplets

A self-driven, interface technology, applied in construction, drinking water installations, water supply installations, etc., can solve the problem of wasteful large-scale application, and achieve the effects of strong material selectivity, simple production process and obvious effect.

Inactive Publication Date: 2019-12-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of interface that does not have the function of spontaneously collecting mist and preventing the re-evaporation of the collected mist will not be able to be put into large-scale applications due to it

Method used

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  • Functional interface for capturing and self-driven directional collection of mist droplets
  • Functional interface for capturing and self-driven directional collection of mist droplets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Apply a 3cm×3cm×0.5cm super-hydrophilic sponge or filter paper, cotton, cardboard, or a one-to-one solution of tannic acid and A200 to form a super-hydrophilic substrate, and spread on one side with an interval of 0.5mm and a width of 0.5mm The superhydrophobic strips form a strip-like superhydrophilic region 1 and superhydrophobic region 2 extending in the same direction in the length direction and alternately arranged in the width direction, and are inserted equidistantly in the superhydrophilic region 1 by about 2.3mm The above steel needles (or copper needles, aluminum needles) are used as fog accumulating needles 3 to make a functional interface for catching and self-driven directional collection of mist droplets. A hose is connected to the back, and the rest is sealed. The other end of the hose uses a graduated cylinder to receive the liquid. Under the condition of blowing mist, the mist can collide with the needle tip to condense into water droplets. When the wate...

Embodiment 2

[0036] The whole copper is machined and cast into a metal plate of 3cm×3cm×0.5cm by micromachining, with steel needles above equidistant (2.3mm) as the fog accumulation needle 3 . A square copper sheet with a thickness of 0.05 mm is used as the super-hydrophilic substrate, which is polished and soaked in a mixed solution of 2.5 mol / L sodium hydroxide and 0.13 mol / L ammonium bisulfite for 24 hours. Copper sheet, wash off the surface alkaline solution, dry to obtain the substrate of super-hydrophilic copper sheet, place the substrate of the original super-hydrophilic copper sheet in a vacuum container, the vacuum degree is 0.09Mpa, add 0.5ml fluorine Silane, after standing at room temperature for 24 hours, take it out. Afterwards, the superhydrophobic surface was ground away at a distance of 0.5 mm by micromachining, and it was processed into strip-shaped superhydrophilic regions 1 and 1 that extended in the same direction in the length direction and alternately arranged in the ...

Embodiment 3

[0038] Super-hydrophobic strips of 0.5 mm in width and 0.5 mm in width are spread on the surface of the super-hydrophilic cylindrical sponge along the generatrix to form strip-like super-hydrophilic regions extending in the same direction in the length direction and arranged alternately in the width direction. 1 and the super-hydrophobic area 2, and in the super-hydrophilic area 1 equidistantly insert about 2mm steel needles as the mist accumulating needle 3, and insert a hose under it to make it capable of capturing droplets in the mist at 360° The accumulating droplets are self-driven directional droplet collectors. Because it is cylindrical, it can collect mist from all directions in nature, which greatly improves the collection capacity. After experiments, it collects about 4-5ml of liquid in ten minutes.

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Abstract

The invention belongs to the technical field of functional materials, and discloses a functional interface for capturing and self-driven directional collection of mist droplets. The functional interface for capturing and self-driven directional collection of mist droplets includes an interface body whose surface is divided into super-hydrophilic regions and super-hydrophobic regions; the super-hydrophilic regions and the super-hydrophobic regions are banded; the super-hydrophilic regions and the super-hydrophobic regions extend in the same direction in the length direction and are alternatelyarranged in the width direction; a plurality of mist accumulation needles are provided in the super-hydrophilic regions; and each mist accumulation needle protrudes from the surface of the interface body. The invention combines the super-hydrophilic regions and the super-hydrophobic regions, and inserts the mist accumulation needles in the super-hydrophilic regions, which uses the release of the surface energy of small liquid droplets as a driving force to realize the spontaneous and directional mist collection process, so as to form the functional interface for autonomously collecting mist and self-transporting.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a novel functional interface for collecting and transporting tiny mist droplets. Background technique [0002] Fog water harvesting is considered to be an effective way to solve the problem of water access in arid but foggy areas. At present, the interfaces with fog accumulating function include mesh, tube, and bionic surfaces with specific patterns, etc. These fog accumulating interfaces have attracted widespread attention because of their relatively efficient fog collection capabilities and considerable water droplet suspension. But these interfaces all rely on gravity to drive the water apart. There will be many disadvantages in this way, which is reflected in the fact that the storage of liquid droplets may be seriously affected by re-evaporation during the process of being blown by the wind, which greatly reduces the efficiency of mist collection. ...

Claims

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Application Information

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IPC IPC(8): E03B3/28
CPCE03B3/28
Inventor 曹墨源白浩宇
Owner TIANJIN UNIV
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