Abstract
Different hybrid Ceramic-Polymeric coatings were prepared, from a suspension consisting of a mixture of tetraethyl orthosilicate (TEOS) as a silicon dioxide precursor, polyvinyl acetate (PVA) and colorant to obtain sol-gel SiO2-PVA thin films. The films were prepared using Sol-Gel technology, applied by dip-coating technique. In order to determine the optimal formulation, different samples varying the proportion of PVA were prepared and evaluated. Both optical and mechanical properties were tested, finding an optimal value of 30 percent of PVA for the mechanical properties, and a value of 50 percent for the optimal optical properties. In both cases, the coatings made can be considered as a reasonable alternative for use as a Solar Absorber for Low-Mid range temperature, with a smaller thickness than the comparable commercial coating but with similar performance and lower cost.
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Chávez-Urbiola, E.A., Pérez-Robles, J.F. Thin Film Hybrid Ceramic-Polymeric Low Cost Solar Absorber. MRS Online Proceedings Library 1534, 165–170 (2013). https://doi.org/10.1557/opl.2013.315
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DOI: https://doi.org/10.1557/opl.2013.315