使用低密度聚乙烯、聚甲基丙烯酸甲酯和疏水性SiO2为原料,通过简单的共混涂膜方法在玻璃基底上制得了具有超疏水性能的聚乙烯/疏水性SiO2和聚甲基丙烯酸甲酯/疏水性SiO2复合涂层;用接触角测量仪、扫描电子显微镜、X-射线光电子能谱仪等分析手段对涂层的润湿性能、微观结构以及表面化学成分等进行了表征.结果表明,所制备的两种聚合物/疏水性SiO2复合涂层的静态水接触角都超过150°,滚动角低至3.0°.聚合物和疏水性SiO2共混涂膜后形成了类似于荷叶的微纳米二元结构,是其表面具有优异超疏水性能的主要原因.
Using low density polyethylene (PE),polymethyl methacrylate (PMMA) and hydrophobic SiO2 as the raw materials,PE/hydrophobic SiO2 and PMMA/hydrophobic SiO2 composite coatings with superhydrophobicity were fabricated on the glass substrate by a simple one-step casting method.Several analysis equipments,such as contact angle meter,scanning electron microscope and X-ray photoelectron spectroscopy instrument,were used to characterize and analyse the wettability,morphology,and surface chemical properties of the as-prepared coatings,respectively.The results show that the static water contact angles of the two coatings are higher than 150° and the sliding angles are lower than 3.0°.It is also found that the micro-nano-binary structure,similar to lotus leaves,is essential for achieving an excellent superhydrophobic surface.
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