Synthesis and Characterization of Superhydrophobic-Superoleophobic and Anti-Corrosion Coatings via Sol-Gel Process

• 作者: Maryam Hosseini-Zori Mohammad Reza Heshmati Sahar Amiri
• 来源期刊: 有机高分子材料期刊(英文)
• 学科: 工学
• 关键词: SUPER-HYDROPHOBIC Super-Oleophobic SOL-GEL PERFLUOROALKYL POLYMER (1H 1H 2H 2H)-Perfluorooctyltriethoxysilane Contact ANGLE
• 年，卷（期）: yjgfzclqkyw_2020,（1）
• 页码范围: 1-15
• 页数: 15页
• 分类号: TG1

摘要

Superoleophobic nanocomposite coatings with improved hydrophobic properties were obtained by incorporation of a perfluoroalkyl polymer in hybrid sol-gel matrix containing silica and titania nanoparticles. SiO2 and TiO2 nanoparticles were synthesized based on sol-gel precursors utilizing tetraethyl orthosilicate, 3-glycidoxypropyl trimethoxysilane, and tetra (n-butyl orthotitanate). SEM and EDX images of the coating demonstrated that a Silica nanosphere had been aggregated in superporous structure. The analysis results show that nano-sized inorganic particles (10 - 20 nm) have a uniform distribution and dispersion. By increasing the PFOTES, the oleophobicity of coatings increased due to lowering of surface energy in the presence of fluoropolymer. Results of EIS measurement show that PFOTES and TiO2 nanoparticles increased anti-corrosion property of hybrid coatings. This method introduces a simple way to produce water- and oil-repellent self-cleaning coatings on large areas of different substrates like glass, ceramic, metal and composites.