| 摘要: |
| 以 Na2HPO4·12H2O 溶液作电解液对纯钛表面先进行阳极氧化,再用氟硅烷做表面修饰,在纯钛表面制备出超疏水性着色膜。 结果表明,钛基体的前处理工艺,阳极氧化电流、电压和时间是影响超疏水性着色膜的重要参数。 相比化学抛光,机械抛光的前处理能获得更加光亮的彩色膜。 电压一定时,随时间延长,着色膜的颜色饱和度下降,但水接触角提高;时间一定时,随电压升高,颜色饱和度下降,水接触角呈升高趋势。 总体来看,当阳极氧化电压为 30 V,阳极氧化时间为 6 h 时,可以获得膜厚约为 3~ 4 μm 蓝色膜,并具有较好的超疏水性(水接触角可达(156. 1±1. 3)°)和耐磨性,具有“花瓣状”的粗糙微纳结构,既微米级的花瓣状凸起和纳米级的薄片,这有利于膜的超疏水性。 耐污试验进一步表明,上述工艺制备的超疏水性着色膜具有优异的自清洁和耐污染能力。 |
| 关键词: 纯钛 阳极氧化 着色膜 超疏水性 |
| DOI：10.11933/j.issn.1007-9289.20191223001 |
| 分类号:TG174 |
| 文章编号:1007-9289(2020)03-0061-10 |
| 文献标识码:A |
| 基金项目:广东省科技计划项目(2015A010105006) |
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| Preparation and Properties of Superhydrophobic Colored Film on Surface of Pure Titanium |
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Zheng Zhijun1, He Rui1, Chen Junhuan1, Gao Yan2, Li Hao3
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1.South China University of Technology, School of Mechanical & Automotive Engineering, Guangzhou 510641 , China;2.South China University of Technology, School of Materials Science & Engineering, Guangzhou 510641 , China;3.Guangdong Inspection and Quarantine Technology Center, Guangzhou 510623 , China
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| Abstract: |
| The superhydrophobic colored films were successfully prepared on the pure titanium using a composite process inclu- ding the optimized anodizing process in Na2HPO4·12H2O solution and subsequently low surface energy modification with fluo- rosilane. The study found that the pretreatment process of titanium substrate, anodizing current, voltage and time are the impor- tant parameters affecting the superhydrophobic colored films. Compared with the chemical polishing, the mechanical polishing can obtain the brighter colored film. As the anodizing time increases, the color saturation of the colored film decreases but the wa- ter contact angle increases under the constant anodizing voltage; as the voltage increases, the color saturation decreases and the wa- ter contact angle generally increases when the time is constant. Overall, when the anodizing voltage is 30 V and the anodizing time is 6 h, a blue film with the good superhydrophobicity (water contact angle (156. 1±1. 3)°) and wear resistance can be obtained. The film thickness is about 3-4 μm. The " petal-like" rough micro-nano structure in this film consisting of both micron-sized petal protrusions and nano-scale flakes contributes to the superhydrophobic property. The anti-pollution experiment indicated that the su- perhydrophobic colored film prepared by the above process has the excellent self-cleaning and anti-pollution ability. |
| Key words: pure titanium anodizing colored film superhydrophobic |
