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一些疏水性表面材料的制备及表征

Fabrication and Characterization of Several Kinds of Hydrophobic Surface Materials

【作者】 裴奔

【导师】 杨武; 高锦章;

【作者基本信息】 西北师范大学 , 分析化学, 2011, 硕士

【摘要】 表面润湿性是固体表面的重要特征之一。具有自清洁能力的超疏水表面的研究具有重要的理论意义和良好的应用前景。另外,表面润湿性动态可控的超疏水/超亲水性可逆转换材料因为具有可以对外部刺激做出精确的改变和调控的特性,在自清洁表面、变焦镜头、液体微球操纵器等方面具有巨大的应用潜能。目前虽然已有许多相关报道,但具有实用性或表面润湿性多种因素动态可控的超疏水表面仍然非常少。本论文研究工作通过多种方法在不同材料基底表面(金属,塑料等)构筑了多种新颖的微纳米结构,并在此基础上提出了多种简单的超疏水表面以及实用化的表面制备方法,并对表面润湿性动态可控的超疏水/超亲水性可逆转换材料进行探索。具有潜在的应用价值。本论文中,我们主要报道了如下结果:(1)通过长链有机弱酸的醇溶液浸泡,在铁、锌、铜锌合金的表面进行氧化还原自组装反应,形成了微纳米结合的粗糙表面结构,无需低表面能修饰便形成了超疏水表面,为金属材料的表面修饰与防护提供了一种新的简便途径。(2)首次合成了一种具有双重刺激响应效果的新型咪唑类离子液体1-(N-异丙基-3-丙酰胺基-)-3-乙烯基咪唑六氟磷酸盐,通过核磁共振对此离子液体的结构进行了表征。(3)聚乙烯具有耐腐蚀性,电绝缘性(尤其高频绝缘性),广泛应用于制作耐腐蚀零件和绝缘零件及薄膜。本章利用溶剂挥发法制备了疏水性聚乙烯塑料薄膜,方法简单,成本低廉。

【Abstract】 Wettability is one of the most important properties of the solid surface. Super- hydrophobic surfaces with self-cleaning ability are very important in foundamental research, with many potential applications in wide industrial and agriculture production and everday life. And due to the correlation with a surface tension gradient, wettability control provides a more flexible and efficient way for wide applications such as self-cleanness, tunable optical lenses or discrete liquid droplet manipulators. Although many reports have been focused on their preparation, practical superhydrophobic surfaces are still very rare, which can be dynamically and simutaneously controled by several factor. In this thesis, some superhydrophobic surfaces were constructed by some very simple methods.(1) An double responsive ionic liquid monomer 1-(N- isopropyl -3- propionylamino -)-3- vinylimidazole hexafluorophosphate, to the temperature and to anion exchange, was successful synthesized and characterized by proton nuclear magnetic resonances.(2) Micro/nanoscale composite structural rough surfaces with super hydrophobic properties are prepared with a redox self-assembly by simply immersing them in alcohol solution of 12-hydroxy stearic acid respectively on the iron, zinc and macht metal surfaces and characterized by XPS, contact angle measurement, IR spectra and SEM. The forming mechanism of superhydrophobic films are also discussed. The result shows that static water contact angles on the three films are higher than 160°.(3) Polyethylene has corrosion resistance, electrical insulation (especially high frequency insulation), and is widely used in making corrosion resistant parts and insulation parts and film. In this chapter, hydrophobic surface was fabricated by a simpe solvent volatilization procedure with a low cost on polyethylene plastic substrate.

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