超疏水自清洁涂料制备及应用研究

Study on the preparation and application of superhydrophobic self-cleaning coating

构建表面微/纳米微观结构和降低表面能是制备超疏水自清洁表面的基本方法,但现有的表面超疏水化处理技术存在污染大、基底材料局限和费用高昂等缺点。为克服上述缺点,文章采用氟硅烷修饰二氧化钛纳米颗粒来制备可用于各种基底材料的超疏水涂料。该涂料可通过喷、刷、浸润等方式覆盖在各种材料表面(如玻璃、金属、织物、海绵等),从而使基底材料获得超疏水自清洁功能。该涂层在大厦外墙玻璃自清洁、大面积海面溢油回收等领域的应用价值较大。

Fabricating micro/nanometer structures and reducing surface energy are the basic ways to prepare superhydrophobic self- cleaning surfaces. However, there are a few defects of the present superhydrophobic modification method including severe pollution, substrate material limitation and high expense. In order to overcome these drawbacks, in this paper, superhydrophobic self-cleaning coating is prepared via modifying titanium dioxide nanoparticles with fluoroalkylsilane, which can be applied to various substrate material. The coating can be covered on various material （such as glass, metal, fabric, and sponge）by means of spraying, brushing, and immersing, resulting in the superhydrophobic property of substrate material. The coating has great application value in the field of self- cleaning of exterior wall glass and widespread spilled oil collection.