氟硅树脂基超疏水涂层的组成设计及性能评价

doi:10.11896/cldb.21090111

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Abstract The superhydrophobic coating has attracted increasing attention due to excellent water resistance, self-cleaning and corrosion resistance. However, the simple and efficient preparation method of superhydrophobic coating with high stability is a major challenge. In this study, fluorine-silicone (F-Si) resin, hydrophobic fumed silica (Hy-SiO₂) and KH-550 were uniformly dispersed according to the established process using ethyl acetate as solvent medium to improve their matching effect. The optimum ratio of superhydrophobic coatings was determined by an orthogonal test with water contact angle (WCA), rolling angle (RA) and friction loss rate (FL) as parameters. On this basis, the effect of superhydrophobic coatings on different substrates, its stain resistance, thermal stability and moisture resistance were studied. The results show that the coating has a WCA of 154.3°, RA of 1.7°, FL of 8.8%, and excellent stability when m(F-Si resin)∶m(Hy-SiO₂)∶m(ethyl acetate)=1:0.2:15. Different substrate types have great influence on the superhydrophobicity of the coating, but the performance was the best on the cement substrate. Through SEM analysis, it is found that the surface of the cement substrate has micron-level roughness, which co-constructs with the nano-particles in the superhydrophobic coating, forming the micro-nano-rough structure of the superhydrophobic surface. In addition, the coating still has the superhydrophobicity, better stain resistance and heat resistance after being heated at 300 ℃ for 1 h and placed at 40% relative humidity for 6 d.

Key words： superhydrophobic water contact angle (WCA) fluorine-silicone (F-Si) resin hydrophobic fumed silica (Hy-SiO₂) orthogonal design

Published: 10 May 2023 Online: 2023-05-04

CLC number:

TQ638

Fund:National Key Research and Development Program of China (2018YFD1101003-06), National Natural Science Foundation of China (U1806222, 52172021), and Natural Science Foundation of Shandong Province (ZR2021ME123).

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	Articles by authors
	LI Quanwei
	LIU Lele
	ZHAO Piqi
	YU Youliang
	SHAO Mingjun
	LU Lingchao

Cite this article:

LI Quanwei,LIU Lele,ZHAO Piqi, et al. Composition Design and Performance Assessment of Superhydrophobic Coating Based on Fluorine-Silicone Resin[J]. Materials Reports, 2023, 37(9): 21090111-7.

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http://www.mater-rep.com/EN/10.11896/cldb.21090111 OR http://www.mater-rep.com/EN/Y2023/V37/I9/21090111

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