화학공학소재연구정보센터
Solar Energy Materials and Solar Cells, Vol.57, No.3, 291-301, 1999
Characterisation of high-temperature-resistant spectrally selective paints for solar absorbers
The spectrally selective paint coatings were prepared from organically modified siloxane resin and inorganic pigment (FeMnCuOx-P320). To optimise the low-emittance properties, different thicknesses of paints were applied on high-reflecting Al foil by a draw bar coater. For all paints, optical and thermal properties were determined as well as their adhesion resistance. Pigment to volume concentration ratio was 20% and for thicknesses of about 1.7-2.0 g/m(2), the solar absorptance for these samples were a(s) = 0.90-0.92 with corresponding thermal emittance of e(r) = 0.20-0.25. Temperature stability of these samples was followed by FT-IR spectroscopy at 300 degrees C. The obtained results indicated good temperature stability of prepared paint coatings.