Super hydrophobic surface possessing dual microtexture and preparation method
A superhydrophobic surface, microstructure technology, applied in microstructure devices, manufacturing microstructure devices, microstructure technology, etc., can solve problems such as insufficient improvement of fluid flow performance, achieve environmental protection, and reduce the use of detergents , the effect of reducing air resistance
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Embodiment 1
[0029] Embodiment 1 A method for making a super-hydrophobic surface with a double microstructure, comprising the following steps
[0030] (1) Select a piece of aluminum sheet with a purity of 99.999%, with an area of 50mm × 50mm and a thickness of 0.5mm, and adopt a common laser processing method to obtain a micron-scale array 3 on the aluminum sheet, and the length a of the microcolumn in the micron-scale array 3 , width b, and height c are all 10 μm, and the spacing d between each microcolumn is 10 μm, as shown in Figure 3;
[0031] (2) The surface of the aluminum sheet with the micron-scale array 3 is used as the anode, and the nickel sheet is used as the cathode, and the porous aluminum oxide nanohole array 4 is produced by the usual anodic oxidation method. The depth e of the holes in the nanohole array 4 is 10 nm, and the aperture f is 10nm, the distance g between the holes is 10nm, the electrolyte for anodic oxidation is 0.3mol / L oxalic acid solution, the applied volt...
Embodiment 2
[0034] Embodiment 2 A method of making a super-hydrophobic surface with a double microstructure, comprising the following steps
[0035] (1) Select a piece of aluminum sheet with a purity of 99.99%, the area is 50mm * 50mm, and the thickness is 0.5mm. Adopt the usual ion etching method to obtain the micron-scale array 3 on the aluminum sheet, and the length of the microcolumn in the micron-scale array 3 a, width b, and height c are all 50 μm, and the distance d between each microcolumn is 60 μm;
[0036] (2) The surface of the aluminum sheet with the micron-scale array 3 is used as the anode, and the nickel sheet is used as the cathode, and the porous aluminum oxide nanohole array 4 is produced by the usual anodic oxidation method. The depth e of the holes in the nanohole array 4 is 25 nm, and the aperture f is 20nm, the distance g between the holes is 15nm, the electrolyte for anodic oxidation is 0.5mol / L oxalic acid solution, the applied voltage is 40V, the temperature is 2°...
Embodiment 3
[0039] Embodiment 3 A method of making a superhydrophobic surface with a double microstructure, comprising the following steps
[0040] (1) Select a piece of aluminum sheet with a purity of 99.999%, with an area of 50mm × 50mm and a thickness of 0.5mm, and adopt a common wet etching method to obtain a micron-scale array 3 on the aluminum sheet, and the length of the microcolumn in the micron-scale array 3 a, width b, and height c are all 100 μm, and the distance d between each microcolumn is 100 μm;
[0041] (2) The surface of the aluminum sheet with the micron-scale array 3 is used as the anode, and the nickel sheet is used as the cathode, and the porous aluminum oxide nanohole array 4 is produced by the usual anodic oxidation method. The depth e of the holes in the nanohole array 4 is 50nm, and the aperture f is 30nm, the distance g between the holes is 40nm, the electrolyte for anodic oxidation is 0.5mol / L sulfuric acid solution, the applied voltage is 30V, the temperatur...
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