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.
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Acknowledgement
The work was supported by the Program for Specialized Research Fund for the Doctoral Program of Higher Education (200803580008), the Program for Science and Technology of Suzhou (SG-0841), the Opening Project of State Key Laboratory of Environmental Adaptability for Industrial Product, and the Program for the graduate innovation fund in University of Science and Technology of China.
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Wang, X., Hu, Y., Song, L. et al. UV-curable waterborne polyurethane acrylate modified with octavinyl POSS for weatherable coating applications. J Polym Res 18, 721–729 (2011). https://doi.org/10.1007/s10965-010-9468-3
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DOI: https://doi.org/10.1007/s10965-010-9468-3