Study On Fabracation And Properties Of Organ/inorganic Super-hydrophobic Nanoparticles

In this paper we first introduce many of the theories used, some of the methods used to generate surfaces and then describe some of the implications of the effect. In addition, we report the fabrication of superhydrophobic surface by combining of the organic and inorganic micro/nano materials. In other words, making superhydrophobic surfaces by a various strategy, i.e., Making an inorganic rough surface first and then modifying it with an organic low surface energy material.In the chapter 2, silica nanoparticles were prepared by sol-gel method, we also research some factors of his reaction, such as catalyst content, reaction time, reaction temperature and so on. Our final goal is by the preparation of the rough surface, to prepare organic and inorganic nanosuperhydrophobic surface. In the chapter 3, Nano-sized SiO₂ was surface modified with silane coupling agent, in order to make it have more Practical application's value, We studied the modifications of it, resin was added into the composition, improving the internal bond(ing) strength with materials, these are of great relevance to applications. In the chapter 4, Polystyrene/silica nanoparticles were prepared by radical polymerization of silica nanoparticles possessing vinyl groups and styrene with benzoylperoxide. The resulting vinyl silica nanoparticles, polystyrene/silica nanoparticles were characterized by means of Fourier transformation infrared spectroscopy, scanning electron microscopy and UV-visible absorption spectroscopy. The results indicated that polystyrene had been successfully grafted onto vinyl silica nanoparticles via covalent bond. The morphological structure of polystyrene/silica nanoparticles film, investigated by scanning electron microscopy, showed a characteristic rough structure. Surface wetting properties of the polystyrene/silica nanoparticles film were evaluated by measuring water contact angle and the sliding angle using a contact angle goniometer, which were measured to be 159o and 2o, respectively. The excellent superhydrophobic property enlarges potential applications of the superhydrophobic surfaces. In the chapter 5, superhydrophobic films of the PS-g-TiO₂ have been prepared, which show good superhydrophobicity and self-cleaning property.