1. UV-curable waterborne polyurethane acrylate modified with octavinyl POSS for weatherable coating applications.
- Author
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Wang, Xin, Hu, Yuan, Song, Lei, Xing, Weiyi, Lu, Hongdian, Lv, Pin, and Jie, Ganxin
- Subjects
ACRYLATES ,X-ray photoelectron spectroscopy ,SURFACE coatings ,THERMAL properties of polymers ,THERMOGRAVIMETRY ,TRANSMISSION electron microscopy ,PHOTOPOLYMERIZATION ,X-ray diffraction - Abstract
UV-curable waterborne polyurethane acrylate (WPUA) modified with octavinyl polyhedral oligomeric silsesquioxane (OVPOSS) was prepared via photopolymerization between OVPOSS and WPUA. Structural and morphological features of WPUA/OVPOSS coatings were assessed using Fourier transform infrared spectroscopy, transmission electron microscopy and X-ray diffraction. Thermal properties of the WPUA/OVPOSS hybride coatings have been improved over the pure waterborne polyurethane acrylate analyzed by thermal gravimetric analysis. Performance of the coatings was also evaluated using water absorption, hardness, contact angle, X-ray photoelectron spectroscopy (XPS). The data showed that the WPUA/OVPOSS coatings possessed better water resistance and thermal oxidative stability in comparison with pure WPUA. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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