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Construction method of titanium surface micrometre-grade pattern based on ultra-hydrophilic/ultra-hydrophobic characteristic

A super-hydrophobic, micron-scale technology, applied in the field of titanium surface, can solve the problems of practical application limitations, complex preparation process, unstable substrate material, etc., and achieve the effect of simple equipment, simple operation and strong practicability

Inactive Publication Date: 2007-08-15
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the above two methods is too complicated and the substrate material is unstable, so the practical application is greatly limited.

Method used

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  • Construction method of titanium surface micrometre-grade pattern based on ultra-hydrophilic/ultra-hydrophobic characteristic
  • Construction method of titanium surface micrometre-grade pattern based on ultra-hydrophilic/ultra-hydrophobic characteristic

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Effect test

Embodiment 1

[0024] Embodiment 1: The base material is a pure titanium plate with a thickness of 2mm, the surface is mechanically polished to a mirror surface with metallographic sandpaper, and ultrasonically cleaned with absolute ethanol and deionized water, dried for later use; the electrolyte is prepared as 0.5wt% HF, and the voltage is controlled 20V, at room temperature, use platinum as the counter electrode for electrochemical anodization for 20min, that is, a layer of light red ordered titanium dioxide nanotube film layer is obtained on the surface of the titanium substrate (see TiO2 in Figure 1 2 FESEM image of the film layer), the inner diameter of the tube is 80-90nm, and the thickness of the film layer is about 400nm. Figure 2 is the corresponding TiO 2 FESEM (JSM-6700F, JEOL, Japan) image of the side of the nanotube array. It can be seen that TiO 2 The upper and lower dimensions of the nanopore or tube are basically the same, the upper end is open and the bottom is closed. T...

Embodiment 2

[0030] Embodiment 2: Adopt 400 order photomasks, other preparation conditions are the same as embodiment 1, can be on titanium surface TiO 2 The surface of the nanostructure array film layer is prepared to form a square array of circular superhydrophobic regions with a diameter of 50 μm and a center interval of 65 μm, and a superphilic / superhydrophobic pattern formed by other superhydrophilic regions.

Embodiment 3

[0031] Embodiment 3: with titanium alloy as base material, adopt 300 purpose photomasks, other preparation conditions are the same as embodiment 1, can be on the titanium alloy surface TiO 2 A hexagonal array formed by circular superhydrophobic regions with a diameter of 55 μm and a center interval of 90 μm was prepared on the nanostructure array film layer, and a superphilic / superhydrophobic pattern formed by other superhydrophilic regions.

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Abstract

The invention discloses a construction method of titanium surface micron-size picture based on super hydrophilic / super hydrophobic peculiarity, which comprises the following steps: pre-processing the surface of base material; allocating electrolytic solution; controlling voltage and temperature; proceeding electro chemical anodic oxidation; getting titanium oxide nanometer structure array film layer; proceeding heat treatment; getting example; soaking in fluorine silicane methanol solution at 10-240 min; getting out; drying at 120-160 deg.c; getting super hydrophobic TiO2 nanometer structure array film layer; covering photomask; irradiating with ultraviolet light; getting the final picture.

Description

technical field [0001] The invention relates to a titanium surface, in particular to a new method for preparing micron-scale super-hydrophobic-super-hydrophilic patterns based on the construction and modification of titanium dioxide nanostructure film layers on the surface of titanium or titanium alloys. Background technique [0002] Titanium dioxide is a semiconductor material with broad application prospects. Its excellent physical and chemical properties make it have attractive application prospects in solar cells, photocatalytic degradation of pollutants, sensors, and glass anti-fog. It has become a research topic at home and abroad. a hot spot. The current preparation methods of titanium dioxide film layer include hydrothermal method, plasma spraying, electrodeposition, electrochemical anodic oxidation method, sol-gel method and so on. Among them, electrochemical anodic oxidation (anodic oxidation) is a surface treatment method with low cost, simple operation and stron...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 林昌健赖跃坤
Owner XIAMEN UNIV
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