PURPOSE: To improve the selective absorbency of solar heat and the stability of a coated film by coating the surface of a heat collecting plate with special paints and heating and curing the film at a specific stoving temperature.
CONSTITUTION: Paints manufactured by adding a disperser to a mixture of one kind or more of oxides, multiple oxides and metallic superfines selected from a group of Fe, Mn, Cu, Cr, Co and Ni in a base polymer (a resin) and a pigment and mixing them together with a solvent are applied onto the metallic substrate 6 of the heat collecting plate. The film is heated and cured at the stoving temperature of 50°C or more, higher than a curing temperature of the single base polymer (the resin). Accordingly, the solar-heat selective absorption film 5 at an extremely high level can be formed.
MAKI MASAO
FUKUDA YUU
| JPS5749762A | 1982-03-23 |