Preparation and Characterization of Water Absorbing and Anti-Fogging Coatings

Abstract:

Anti-fogging functional coatings have a broad application prospective in the fields of construction and transportation vehicles. In this study, superior water absorbing and anti-fogging coatings were prepared by a cure reaction using epoxy resins as water absorbent resins, hydroxyethyl ethylenediamine as a curing agent, γ-ammonia propyl triethoxy silane as a coupling agent, organic silicon sol as filler. The impact of additional polyethylene glycol (PEG) on the properties of water absorbing and antifogging coating has also been studied. The anti-fogging experiments were conducted in a 40 °C water steam bath, and the result shows that the sample with additional 4.0 % PEG has an anti-fogging time of 315 seconds (s), which is better than that without PEG (the anti-fogging time being 240s). Infrared spectroscopy and scanning electron microscope structure characterization indicate that the sample with additional PEG has an obvious three-dimensional network structure with hydroxyl groups, which leads to a great saturated water quantity and a superior anti-fogging performance.

• Periodical: Materials Science Forum (Volume 848)
• Pages: 722-725
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.848.722
• Online since: March 2016
• Authors: Kai Wang, Min Huang, Yue Huang, Zhong Hua Zhou, Shirley Shen
• Keywords: 3-D Network Structure, Anti-Fogging Film, PEG, Water Absorbing

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