《超疏水表面水润滑摩擦学特性研究》》-毕业论文.doc

┊┊┊┊┊┊┊装 ┊┊┊┊┊┊┊装┊┊┊┊┊┊┊订┊┊┊┊┊┊┊线┊┊┊┊┊┊┊ 毕 业 论 文 二○一二年六月 超疏水表面水润滑摩擦学特性研究 专业班级：机械设计制造及其自动化1班 姓 名： 庞鹏鹏 指导老师： 连峰 交通运输装备与海洋工程学院 Ⅰ 摘 要 超疏水表面因其优异的性能在高科技领域和日常生活等方面有广泛的应用,同样在摩擦学领域中也越来越显示出独特的作用，超疏水应用于减磨、减阻是最近十几年才出现的一种新兴的减阻技术，但已成为国内外关注的热点。 目前通过对荷叶表面微纳结构的仿生制造，已经可以实现在亲水材料上制备超疏水表面。然而,超疏水表面现有的制备方法一般都工艺复杂和费用高昂,同时其超疏水性与其他材料性能很难相容,限制了其实际应用。对此,特别需要深入理论研究,优化设计表面微纳结构。本实验通过复合法构建微米结构和纳米结构来获得超疏水表面，首先是激光加工得到微米结构，然后将环氧树脂溶液涂在表面上，再涂上纳米二氧化硅分散液，就获得了其纳米结构，最后再用地表面能修饰液进行修饰，即得到超疏水表面，操作简单易行，成本也不高，是制备超疏水表面的一个很好的方法，也是未来超疏水表面的制备一个重要研究方向。本实验利用接触角测量仪测试表面的水接触角和表面能，利用多功能摩擦磨损实验机测试表面摩擦学特性，利用扫描电子显微镜对摩擦后的表面进行表征分析，通过对超疏水表面摩擦磨损实验的研究以及对摩擦磨损后的SEM形貌图的观察，进一步讨论超疏水表面的摩擦磨损性能。 实验得到如下结论：通过构建材料表面的微米结构和纳米结构，可以获得超疏水表面，而且，在一定范围内随着纳米二氧化硅浓度的增大，获得的超疏水表面的接触角越大，滚动角越小，超疏水效果越明显，表面摩擦系数越低。超疏水表面能够明显的降低摩擦系数，减小摩擦。 关键词：超疏水表面；接触角；微纳米结构；减阻 Ⅱ Abstract Superhydrophobic surfaces are promising for potential applications in the high-technology field and daily life because of their excellent properties, and also has increasingly shown a unique role in the field of tribology , Superhydrophobic applied to wear reduction, drag reduction is in recent years as a new technology of drag reduction, but has become the focus of attention at home and abroad. At present, by mimicking the micro-nano structures of lotus leaves, it is available to fabricate superhydrophobic surfaces based on hydrophilicmaterials, which can almost becom-mercially applicable. However, the fabrication techniques for superhydrophobic surfaces are not only complicated but also expensive, and superhydrophobicity can not be compatible with other materials properties, limiting their practical applications. To solve these issues and to explore the possible initial applications in the high-technology field, it is necessary to employ the advanced theories to design the optimalmicro-nano structures. This experiment obtains super- hydrophobic surface by composite method to construct micro-structures and nano –structure, The first is a laser