The formation of a protective layer from (3-mercaptopropyl)trimethoxysilane (MPTMS) on commercial Sunselect, was studied by non-electrochemical (29Si NMR, IR RA, XPS) and electrochemical (CV and PD) techniques. By simple dip coating of the Sunselect substrate in the MPTMS sol a protective layer was formed, imparting corrosion stability to Sunselect in a salt spray chamber for at least 20 days, outperforming any other sol–gel coating used so far. The most important ?nding was the observation that the applied MPTMS layer did not affect the spectral selectivity.
COBISS.SI-ID: 4211226
Polyurethane based thickness insensitive spectrally selective (TISS) paint coatings deposited on copper substrates were investigated to obtain information about their service lifetime. The activation energy for the degradation process was derived from vibrational band changes recorded in the infrared hemispherical reflectance spectra of TISS paint coatings exposed to different thermal loads. An accelerated test procedure confirmed that TISS coatings could be safely used in solar collectors for at least 45 years.
COBISS.SI-ID: 4117018