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Coatings 2019, 9(3), 159; https://doi.org/10.3390/coatings9030159

Fluorine-Free Superhydrophobic Coatings Based on Silicone and Functionalized Colloidal Silica

1
GE (China) Research and Development Centre, Shanghai 201203, China
2
Key Laboratory of Advanced Polymer Materials of Shanghai, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
*
Author to whom correspondence should be addressed.
Received: 1 February 2019 / Revised: 15 February 2019 / Accepted: 28 February 2019 / Published: 28 February 2019
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Abstract

Recently, fluorine materials have been a serious cause of environmental concern. In response, a novel fluorine-free superhydrophobic coating is presented in this paper. A superhydrophobic coating based on silicone and surface-modified colloidal silica is explored and exploited. First, a superhydrophobic coating, based on silicone resins and fluorine group-modified colloidal silica, is developed. Then, the fluorine group-modified colloidal silica is replaced by octyl-modified colloidal silica, a superhydrophobic coating based on fluorine-free materials, octyl-functionalized colloidal silica, and epoxy-modified silicone. The hydrophobicity and coating integrity were investigated, and the fluorine-free coating shows good superhydrophobicity and coating integrity. The result demonstrates the feasibility of a fluorine-free superhydrophobic coating, thus providing an effective solution to the environmental problems caused by fluorine chemicals. View Full-Text
Keywords: superhydrophobic coating; colloidal silica; silicon; fluorine-free superhydrophobic coating; colloidal silica; silicon; fluorine-free
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Lei, H.; Xiao, J.; Xiong, M.; Zheng, L.; Zhuang, Q. Fluorine-Free Superhydrophobic Coatings Based on Silicone and Functionalized Colloidal Silica. Coatings 2019, 9, 159.

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