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Coatings 2019, 9(3), 159;

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

GE (China) Research and Development Centre, Shanghai 201203, China
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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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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