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Preparation of transparent ultrahydrophobic silica film by sol-gel process

机译：溶胶-凝胶法制备透明的超疏水二氧化硅薄膜

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摘要

Transparent ultrahydrophobic films were synthesized by sol-gel process with organic silicones modified into silica sol and cured under UV irradiation. The effects of hydrolysis temperature, hydrolysis time, molar ratio of organic silicone to silica sol, and surface morphology on the hydrophobicity of the films were discussed in detail using FTIR spectroscopy, scanning electron microscopy (SEM), AFM, optical transmission, and contact angle measurement, respectively. The AFM and SEM images indicated that the surface roughness enhanced the hydrophobicity of the films. The results revealed that methyl-trimethoxysilane (MTMS)-modified silica film prepared at 50℃ for 2 h with an MTMS/silica sol molar ratio of 1:10 had a very high contact angle (130°). However, the higher hydrolysis temperature and longer reaction time might have accelerated the self-condensation of silanol and decreased the contact angle of the films.
机译：透明的超疏水薄膜是通过溶胶-凝胶法合成的，有机硅被改性为硅溶胶并在紫外线照射下固化。使用FTIR光谱，扫描电子显微镜（SEM），AFM，光学透射率和接触角详细讨论了水解温度，水解时间，有机硅与硅溶胶的摩尔比以及表面形态对薄膜疏水性的影响。测量。 AFM和SEM图像表明表面粗糙度增强了膜的疏水性。结果表明，MTMS /硅溶胶摩尔比为1:10，在50℃下制备2小时的甲基三甲氧基硅烷（MTMS）改性二氧化硅膜具有很高的接触角（130°）。然而，较高的水解温度和较长的反应时间可能加速了硅烷醇的自缩合并降低了膜的接触角。

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  • 来源
    《JCT》 |2011年第1期|p.53-60|共8页
  • 作者

    Guojian Wang; Jiayun Yang; Quan Shi;

  • 作者单位

    Key Laboratory of Advanced Civil Engineering Materials,Ministry of Education, Shanghai 200092, China,School of Materials Science and Engineering,Tongji University, Shanghai 200092, China;

    School of Materials Science and Engineering,Tongji University, Shanghai 200092, China;

    School of Materials Science and Engineering,Tongji University, Shanghai 200092, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ultrahydrophobic film; transparency; silica sol; organic silicone; sol-gel process; contact angle;

    机译：超疏水膜透明度;硅溶胶有机硅;溶胶-凝胶法接触角;

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