Research Progress of the Polyurethane-nTiO₂ Self-Cleaning Coating

Abstract:

Self-cleaning coatings are getting tremendous attention from both the academic interest and industrial communities. Among the two kinks of self-cleaning coatings, which are super-hydrophobic and super-hydrophilic coatings, the super-hydrophilic self-cleaning coating comprised of TiO₂/doped-TiO₂ has four unique features when exposed to ultraviolet (UV) light or sunlight, which are self-cleaning property, anti-bacterial properties, environmental friendly, and visible-light photocatalysts and indoor usage. And PU-TiO₂ self-cleaning coating produced by “grafting” method, which can accomplish stable chemical attachment between the nTiO₂ and the PU substrates, may potentially show an increase of the thermal properties, an increase of the amount of active sites for photo-catalysis, and a decrease in the self-degradation of the resulting polymer nanocomposite than the traditional mechanical shear method. There is a tremendous scope for the application of polyurethane-nTiO₂ self-cleaning coatings in industrial, health care and consumer sectors.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 261-265
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.261
• Online since: September 2014
• Authors: Lin Wang, Yi Shang, Xia Xiao, Bo Mu, Guang Wen Zhang
• Keywords: Coating, Nanocomposite, nanoTiO₂, Polyurethane, Self-Cleaning

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