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首页> 外文期刊>Journal of coatings technology and research >Facile fabrication of water repellent coatings from vinyl functionalized SiO_2 spheres
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Facile fabrication of water repellent coatings from vinyl functionalized SiO_2 spheres

机译：用乙烯基官能化的SiO_2球体轻松制造疏水涂层

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摘要

Water repellent SiO_2 particulate coatings were prepared by a one-step introduction of vinyl groups on the coating surface. Rough surface structure and low surface energy could be directly obtained. Vinyl functionalized SiO_2 (vinyl-SiO_2) spheres with average diameter of 500 nm were first synthesized by a sol-gel method in aqueous solution using vinyltriethoxysilane as the precursor. The multilayer SiO_2 coating fabricated by dip-coating method was highly hydrophobic with a water contact angle of 145.7° ± 2.3°. The superhydrophobic SiO_2 coating with a water contact angle up to 158° ± 1.7° was prepared by spraying an alcohol mixture suspension of the vinyl-SiO_2 spheres on the glass substrate. In addition, the superhydrophobic SiO_2 coating demonstrated good stability under the acidic condition. However, it lost its hydrophobicity above 200°C because of the oxidation and degradation of vinyl groups.
机译：通过在涂层表面上一步引入乙烯基来制备疏水性SiO_2微粒涂层。可以直接获得粗糙的表面结构和低的表面能。首先使用乙烯基三乙氧基硅烷作为前体，在水溶液中通过溶胶-凝胶法合成了平均直径为500 nm的乙烯基官能化SiO_2（乙烯基-SiO_2）球。通过浸涂法制备的多层SiO_2涂层是高度疏水的，水接触角为145.7°±2.3°。通过将乙烯基-SiO 2球的醇混合物悬浮液喷涂在玻璃基板上，制备了水接触角高达158°±1.7°的超疏水性SiO 2涂层。此外，超疏水性SiO_2涂层在酸性条件下表现出良好的稳定性。然而，由于乙烯基的氧化和降解，它在200℃以上失去了疏水性。

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  • 来源
    《Journal of coatings technology and research》 |2013年第4期|465-473|共9页
  • 作者

    Qianqian Shang; Mengyu Wang; Hu Liu; Lijing Gao; Guomin Xiao;

  • 作者单位

    School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China;

    School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China;

    School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China;

    School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China;

    School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sol-gel; SiO_2 spheres; Superhydrophobic; Contact angle;

    机译：溶胶凝胶SiO_2球超疏水;接触角;

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