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A processing method for superhydrophobic slanted column arrays of droplet lateral pie bouncing

A processing method and super-hydrophobic technology, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of limited preparation materials, expensive lithography equipment, complicated preparation process, etc., and achieve controllable inclination angle and processing range. Wide, high processing efficiency

Active Publication Date: 2022-02-15
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In summary, although the above-mentioned processing methods can produce slanted column arrays, their methods generally have disadvantages such as complex preparation process, expensive lithography equipment, or limited preparation materials.

Method used

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  • A processing method for superhydrophobic slanted column arrays of droplet lateral pie bouncing
  • A processing method for superhydrophobic slanted column arrays of droplet lateral pie bouncing
  • A processing method for superhydrophobic slanted column arrays of droplet lateral pie bouncing

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Effect test

Embodiment

[0029] Using nanosecond laser processing droplet lateral cake-shaped bouncing superhydrophobic slanted pillar array, such as figure 1 As shown, the specific method is as follows:

[0030] In the first step, the nanosecond laser processes the slanted column array:

[0031] 1.1) Polish the 1060 aluminum plate (thickness 3mm) with 800# and 1500# sandpaper in order, and then ultrasonically clean it with deionized water to remove surface oil and dust;

[0032] 1.2) Nanosecond laser processing aluminum plate to construct micro / nano structure, processing power is 21W, scanning speed is 700mm / s, scanning frequency is 20kHz, filling line spacing is 50μm, scanning times is 1;

[0033] 1.3) Draw the scanning trajectory of the nanosecond laser: draw a rectangle with a width of 0.5mm and a length of 9mm, draw a 20×1 circular array with a gap of 200μm inside and a diameter of 250μm, the circular area is not filled, and the outer area of ​​the circle is drawn Filling, the filling line spac...

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Abstract

The invention provides a method for processing liquid droplets transverse cake-shaped bouncing super-hydrophobic oblique column arrays, which belongs to the technical field of micro-special processing. The processing method is as follows: setting nano-laser processing parameters, pre-processing the micro / nano structure on the top of the inclined column array on the metal substrate; fixing the processed workpiece on the X-axis rotatable electric control platform, setting the electric control platform The rotation angle of the X-axis, using the line-by-line feed processing method to manufacture a slanted column array on the metal substrate, and modify the obtained slanted column array with fluorosilane or stearic acid solution to obtain a superhydrophobic slanted column array . The method of the present invention has the advantages of simple operation, low cost, controllable structural size and inclination angle of the manufactured superhydrophobic slanted column array, wide processing range and stable superhydrophobic performance. The superhydrophobic slanted column prepared by the present invention The array can reduce the liquid-solid contact time by 84%, and can effectively realize the horizontal cake-like bounce of liquid droplets to prevent the occurrence of icing.

Description

technical field [0001] The invention belongs to the technical field of micro-special processing, and relates to a processing method for liquid drop transverse pie-shaped bouncing super-hydrophobic slanted column arrays. Background technique [0002] Freezing rain is a common disastrous weather in early winter or late winter and early spring. It is easy to adhere to the surface of wires, wings, iron towers, etc. and form thicker and thicker ice layers, which has a great impact on human production and life. . Existing studies have found that when water droplets hit the surface of a superhydrophobic columnar structure, a "cake-like bouncing" phenomenon can occur, thereby greatly shortening the solid-liquid contact time, and the significantly shortened solid-liquid contact time can effectively avoid the formation of ice layers. The water droplets that hit the surface of the superhydrophobic columnar structure vertically will spread first, then rebound and finally break away fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/352B23K26/60
CPCB23K26/355B23K26/60
Inventor 宋金龙吴松潘维浩黄柳
Owner DALIAN UNIV OF TECH
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