Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (10): 20-24,30.doi: 10.3969/j.issn.1000-565X.2014.10.004

• Materials Science & Technology • Previous Articles     Next Articles

Fabrication and Performance of SiO2/FSiPA Hybrid Superhydrophobic Coating

Xiao Xin-yan  Shi Ying-long  Liu Jian-feng   

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2014-05-06 Revised:2014-06-17 Online:2014-10-25 Published:2014-10-01
  • Contact: 肖新颜(1964-)，男,教授,博士生导师,主要从事功能涂层材料等研究. E-mail:cexyxiao@scut.edu.cn
  • About author:肖新颜(1964-)，男,教授,博士生导师,主要从事功能涂层材料等研究.
  • Supported by:

    国家自然科学基金资助项目（21076092）

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Abstract:

First, with tetraethoxysilane (TEOS) as precursor and methyltriethoxysilane (MTES) as modifier, hydrophobic silica nano-particles were synthesized in polyacrylate emulsion containing siloxane and fluorine (FSiPA) by means of the sol-gel method. Next, superhydrophobic coatings were fabricated by spraying the SiO2/FSiPA hybrid emulsion on clean glass substrates. Then, the authors analyzed the effects of the FSiPA emulsion dosage and the mole ratio of MTES to TEOS (M/T) on the coating performance were analyzed and explored the effect of M/T on the coating micro-morphology was explored. Finally, the formation mechanism of the hybrid coating was discussed, and the self-cleaning properties of the superhydrophobic and hydrophobic coating tilting at the same angle were also compared. The results show that, when the FSiPA emulsion content iswas 15% and the M/T iswas 5, the coating possesses good film-forming property and self-cleaning property with a water contact angle of about 154.0°, and the hydrophobic silica particles can form rough micro/nanostructure on the coating surface.

Key words: sol-gel method, silica nanoparticle, hybrid coating, superhydrophobicity, static contact angle

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