【作者】 王丽；

【导师】 刘伟良；

【作者基本信息】 山东轻工业学院 ， 高分子化学与物理， 2012， 硕士

【摘要】 本论文首先介绍了超疏水表面的基础理论和最新研究进展，超疏水表面一般通过构造一定的表面粗糙度和用低表面自由能物质修饰而成。以有机物和无机纳米粒子为原料，制备了有机无机纳米复合超疏水材料，这种超疏水材料兼具有机物和无机物的特性，具有良好的超疏水性能。在本论文的第二章，通过筛选不同的配比和实验方案，采用溶胶-凝胶法制备了纳米二氧化钛粒子；着重探讨了反应物的用量、温度及pH值对凝胶化的影响及制备不同大小纳米二氧化钛的方法，这为后面有机无机纳米复合超疏水材料的制备做了很好的铺垫。第三章，用乙烯基三乙氧基硅烷对纳米二氧化钛进行改性，制备了乙烯基三乙氧基硅烷修饰的二氧化钛超疏水薄膜；实验中探讨了乙烯基三乙氧基硅烷的用量和反应时间对所制备的薄膜的超疏水性的影响，得出了最佳反应物用量。第四章是在第三章制备的乙烯基三乙氧基硅烷改性的二氧化钛的基础上，接枝聚苯乙烯，制备了聚苯乙烯接枝的二氧化钛超疏水薄膜；测试结果表明：这种薄膜不仅具有良好的疏水性，而且兼具无机物和有机物的特性，其疏水效果优于只用乙烯基三乙氧基硅烷改性的二氧化钛超疏水薄膜。通过SEM观察了其形貌，发现该表面具有微纳米二级复合结构。另外，还通过FT-IR、DSC、XRD等多种表征手段验证了所制备的材料的组成和结构。第五章中，用简单易行的方法制备了PS/TiO2纳米复合超疏水表面，这种方法操作简单、成本低。整篇文章围绕超疏水材料的制备及其表征进行，用不同的方法制备了超疏水材料，最后通过多种测试手段表征了其结构。更多还原

【Abstract】 The thesis first reviewed the basic theory and recent progress on thesuperhydrophobic surface. It is known that a superhydrophobic surface is fabricated byconstructing a certain surface roughness and low surface free energy material. So, theorganic-inorganic nanocomposite superhydrophobic film possessing the criterionsshould show good superhydrophobic properties, which is made by organic andinorganic nanoparticles.The nano-titania was prepared by changing the reactants and react conditions toobtain virous particle-size. The amount of reactant, temperature, and pH values affectthe gelation remarkly, which could be selected to prepare different organic-inorganicsuperhydrophobic surfaces. The vinyltriethoxysilane modified titanium dioxidesuperhydrophobic films were prepared by add the vinyltriethoxysiloyl onto the danglingbonds of titanium dioxide. The amount of vinyltriethoxysilane and reaction time affectthe superhydrophobicity of the surface, and the optimal amount of reactants wasobtained after a series of failed attempts. The organic-inorganic nanocomposite filmswere fabricated by grafting the polystyrene onto the vinyltriethoxysilane modifiedtitanium oxide nanopowders using free radical polymerization. It shows both organicand inorganic properties, and the wetting performance is better than thevinyltriethoxysilane modified titanium dioxide superhydrophobic films. Themorphology of the films and the structure of the PS grafted titanium oxide wereexamined by Field Emission Scanning Electron Microscope, Fourier transform infraredspectroscopy, Differential Scanning Calorimetry and X-ray diffraction. Then thePS/TiO2nanocomposite superhydrophobic surface was prepared using simple and easymethod with low cost.更多还原