Preparation and characterization of superhydrophobic coatings with silica/polyvinylsilsesquioxane

被引：0

作者：

Yang H. ^{[1
]}

Gao H. ^{[1
]}

机构：

[1] School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng | / 11卷 / 130-134期

关键词：

Polyvinylsilsesquioxane; SiO[!sub]2[!/sub; Superhydrophobic coatings; Vinyltrimethoxysilane;

D O I：

10.16865/j.cnki.1000-7555.2016.11.025

中图分类号：

学科分类号：

摘要：

In ethanol solution, silica particles was modified with vinyltrimethoxy-silane (VTMOS), and the functional alcosol was used to prepare hydrophobic coating by coating methods. The surface morphologies, structures and composes of as-prepared SiO2, PVSQ, composite SiO2-PVSQ were investigated by SEM, FT-IR, and XRD respectively. The results show that VTMOS not only modifies the silica changing from hydrophilia into hydrophobicity, but also produces a series of highly monodisperse spherical polyvinylsilsesquioxane (PVSQ) by hydrolysis and condensation reaction with the catalyst of ammonia. The smaller silica particles are adhered to the surface of bigger PVSQ spherical particles, which reduce reuniting of the silica particles and form a rough hierarchical micro-structure resulted in more air to be captured. Compared with the surface of pure SiO2, the obtained composte surface capturing more air makes the water the contact angle (WCA) increase from 143° to 167° and the sliding angle(SA) decrease from 25° to 3°, achieving a real superhydrophobic surface. © 2016, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：130 / 134

页数：4

共 12 条

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