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Method for enabling condensed liquid drops to be spontaneously expelled in horizontal direction

A horizontal direction, condensate technology, applied in the direction of coating, etc., can solve the problem of poor droplet repelling effect

Active Publication Date: 2020-07-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for spontaneously driving away condensed liquid droplets in the horizontal direction, which can effectively solve the current problem of poor liquid droplet driving effect

Method used

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  • Method for enabling condensed liquid drops to be spontaneously expelled in horizontal direction
  • Method for enabling condensed liquid drops to be spontaneously expelled in horizontal direction
  • Method for enabling condensed liquid drops to be spontaneously expelled in horizontal direction

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for spontaneously dispelling condensate droplets in a horizontal direction, comprising the steps of:

[0032] (1) Place a glass sheet with an area of ​​27*5mm on a candle flame for 30 seconds, then place the glass sheet, 4ml tetraethyl orthosilicate and 4ml ammonia solution in a dry container, vacuum and let it stand for 20 hours ;

[0033] (2) annealing the glass sheet treated in step (1) at 500° C. for 1.5 h;

[0034] (3) Use O 2 The glass sheet after the annealing in the plasma treatment step (2), the treatment time is 10min, wherein, O 2 The proportion is 70%, and the rest is Ar. Then place the glass sheet and 100 μl perfluorooctyltrichlorosilane in a dry container, vacuumize and let stand for 1 hour to obtain the base layer;

[0035] (4) Charge the base layer in step (3) for 1 min at a voltage of 8kV to inject a gradient electric field into the base layer, and then place the base layer horizontally in a condensation environment to achieve the effect of ...

Embodiment 2

[0037] A method for spontaneously dispelling condensate droplets in a horizontal direction, comprising the steps of:

[0038] (1) Place a glass sheet with an area of ​​27*5mm on a candle flame for 30 seconds, then place the glass sheet, 4ml tetraethyl orthosilicate and 4ml ammonia solution in a dry container, vacuum and let it stand for 26 hours ;

[0039] (2) annealing the glass sheet treated in step (1) at 600° C. for 3 hours;

[0040] (3) Use O 2 The glass sheet after the annealing in the plasma treatment step (2), the treatment time is 10min, wherein, O 2 The proportion is 80%, and the rest is Ar, then place the glass sheet and 100 μl perfluorooctyltrichlorosilane in a dry container, vacuumize and let stand for 3 hours to obtain the base layer;

[0041] (4) Charge the base layer in step (3) for 3 minutes at a voltage of 12kV to inject a gradient electric field into the base layer, and then place the base layer horizontally in a condensation environment to achieve the ef...

Embodiment 3

[0043] A method for spontaneously dispelling condensate droplets in a horizontal direction, comprising the steps of:

[0044] (1) Place the glass sheet with an area of ​​27*5mm on the candle flame for 30s, then place the glass sheet, 4ml tetraethyl orthosilicate and 4ml ammonia solution in a dry container, vacuumize and let stand for 24h ;

[0045] (2) annealing the glass sheet treated in step (1) at 550° C. for 2 hours;

[0046] (3) Use O 2 The glass sheet after the annealing in the plasma treatment step (2), the treatment time is 10min, wherein, O 2The proportion is 75%, and the rest is Ar. Then place the glass sheet and 100 μl perfluorooctyltrichlorosilane in a dry container, vacuumize and let stand for 2 hours to obtain the base layer;

[0047] (4) Charge the base layer in step (3) for 1.5 minutes under the condition of 10kV voltage, inject a gradient electric field into the base layer, and then place the base layer horizontally in a condensation environment to achieve ...

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Abstract

The invention discloses a method for enabling condensed liquid drops to be spontaneously expelled in the horizontal direction, which comprises the following steps: putting a glass sheet on flame to besmoked, then respectively putting the glass sheet, tetraethyl orthosilicate and an ammonia water solution into a drying container, vacuumizing, standing for 20-26 hours, then annealing the glass sheet for 1.5 to 3h under the condition of 500 DEG C to 600 DEG C, processing the annealed glass sheet by utilizing O2 plasma to obtain a substrate layer, respectively putting the substrate layer and perfluorooctyltrichlorosilane into a drying container, vacuumizing, standing for 1 to 3h, injecting a gradient electric field into the substrate layer by using an 8-12KV high-voltage power supply througha corona polarization method, and horizontally putting the substrate layer with the gradient electric field into a condensation environment, thereby achieving an effect of expelling condensed liquid drops. The method can effectively solve the problem that an existing expelling method is poor in condensate drop expelling effect.

Description

technical field [0001] The invention relates to the technical field of enhancing condensation heat transfer, in particular to a method for spontaneously driving condensed liquid droplets away in a horizontal direction. Background technique [0002] Condensation is a very common phenomenon in nature, daily life and industrial production. The dewdrops that condense on plants in the early morning, the condensate droplets produced on indoor window glass in winter, and the water film covering the surface of various condensers are all caused by condensation. There are two ways to condense droplets, film condensation on a hydrophilic surface and drop condensation on a hydrophobic surface. The heat dissipation efficiency of drop condensation is more than ten times greater than that of film condensation. At the same time, due to the The droplet has a small viscosity on the hydrophobic surface, so it is easier to remove, so that the droplet condensation can continue, so droplet conde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/42
CPCC03C17/42C03C2217/213C03C2218/151C03C2218/31C03C2218/32
Inventor 邓旭张城林王德辉
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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