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Journal of Coatings Technology and Research
Erschienen in: Journal of Coatings Technology and Research 5/2020

08.04.2020

Hydrophilic nano-SiO2/PVA-based coating with durable antifogging properties

verfasst von: Guoqiang Wu, Yuling Yang, Yongtong Lei, Dapeng Fu, Yuchao Li, Yanhu Zhan, Jinming Zhen, Mouyong Teng

Erschienen in: Journal of Coatings Technology and Research | Ausgabe 5/2020

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Abstract

Hydrophilic SiO2/poly(vinyl alcohol) (PVA) coating prepared by solution blended method showed high light transmittance and durable antifogging performance. The effects of SiO2 content and pH value of SiO2 suspension on the morphology and properties of hydrophilic coating were studied by Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, contact angle test, ultraviolet visible light spectrophotometer, and antifogging test. Results showed that the PVA had good compatibility with nano-SiO2 because of the formation of Si–O–C chemical bond at the interface between nano-SiO2 and PVA. When prepared at pH = 7, SiO2/PVA coatings (SiO2/PVA mass ratio of 0.8) were hydrophilic, with a water contact angle of 22.9°, and exhibited papilla-like surface features (RMS = 7.6 nm). Polyethylene (PE) samples coated with this SiO2/PVA film exhibited a light transmittance of up to 90%, between 560 and 700 nm, and remained fog-free for more than 1 month after exposure to water at 60°C (QB/T 4475-2013 standard). Water-resisting and wear-resisting tests revealed that antifogging coatings demonstrated excellent mechanical properties.
Vorheriger Artikel Emulsifying ionic apolar polymer in water: understanding the process
Nächster Artikel Stretchable strain sensors based on conductive coating cracks with improved interfacial adhesion by wet phase separation treatment

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Metadaten
Titel
Hydrophilic nano-SiO2/PVA-based coating with durable antifogging properties
verfasst von
Guoqiang Wu
Yuling Yang
Yongtong Lei
Dapeng Fu
Yuchao Li
Yanhu Zhan
Jinming Zhen
Mouyong Teng
Publikationsdatum
08.04.2020
Verlag
Springer US
Erschienen in
Journal of Coatings Technology and Research / Ausgabe 5/2020
Print ISSN: 1547-0091
Elektronische ISSN: 1935-3804
DOI
https://doi.org/10.1007/s11998-020-00338-z

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