超疏水陽極氧化鋁膜之製備與其耐蝕性研究

The preparation of the superhydrophobic anodic aluminum film and the study of its anti-corrosion property

陳威廷(Wei-ting Chen)

指導教授 ： 施幸祥

大同大學/工程學院/化學工程學系所/碩士(2011年)

摘要

先使用陽極氧化法與化學腐蝕法在鋁表面製造粗糙結構，再經表面自組裝矽氧烷後，得到超疏水自清潔表面。氧化鋁膜在粗糙度為316nm ~ 364nm之間，可獲得超疏水表面，其接觸角在150°以上，而最佳操作條件為3M陽極處理濃度及20min蝕刻時間的程序，其疏水角高達157.58°，與液體接觸面積只有10.94%，剩餘89.06%是接觸在343nm粗糙結構上的氣體，致使耐腐蝕性最高。在不同的表面微觀結構及其疏水性進行了研究，分析膜厚和粗糙度對疏水性的影響。對該塗層的表面結構及超疏水性能進行的分析，說明表面粗糙化與低表面能物質的協同作用，獲得了最佳的疏水效果。

關鍵字

超疏水性 ； 陽極氧化鋁

並列摘要

Using the two methods of anodic oxidation and chemical etching to make a rough surface structure on aluminum, then the super-hydrophobic self-cleaning surfaces are obtained through the procedure of self-assembled surface from the siloxane. The roughness of aluminum film is between 316nm and 364nm, the contact angle is above to 150 °, it is required to make a super-hydrophobic surface. And the best operating conditions to obtain the super-hydrophobic surface are: 3M sulfuric acid in the anodizing step and 20min etching time, the contact angle with water droplets will up to 157.58°, and the wetting area will be 10.94%, and the remaining area of 89.06% is the 343nm rough structure on which the gas is contacted, that resulting in the highest corrosion resistance . After the different microstructure and hydrophobicity of the surface were studied, the effects of film thickness and roughness on the hydrophobic properties were analyzed. The structure of the coating surface and the super-hydrophobic properties were also investigated. It indicates that the surface roughness and low surface energy material are the two key points of the super-hydrophobic effect.

並列關鍵字

superhydrophobic ； anodic aluminum oxide

參考文獻

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