The subject of this invention is a sol-gel procedure for the preparation of anticorrosion coatings for solar collectors, prepared from cermets applied on metals. Core of this invention are processes for the preparation of ultra thin coatings, i.e. from 0.5 to 500 nm, which do not deteriorate optical properties of solar selective surfaces. The coatings were prepared with mixing of at least one mercapto silane with, another silane in organic solvent with water and acid. So protected absobers haveb excellent anticorrosion stability, that is more than 20 days in slat spray chamber.
F.33 Slovenian patent
COBISS.SI-ID: 4235290Black and coloured (red, green, blue) paints were prepared for use as thickness insensitive spectrally selective (TISS) paint coatings for solar facade absorbers on the basis of polyurethane binder. A low emittance of the paints was achieved by using low-emittance aluminium flake pigments, while black pigment was added to adjust solar absorptance. TISS paint coatings combine the advantages of paints (longevity and chemical resistance, variety of colours and simple application) with their spectral selectivity.
F.33 Slovenian patent
COBISS.SI-ID: 2892314