| 摘要 |
PURPOSE:To obtain a coating composition of high-efficiency, by decreasing the radiating rate and increasing the absorption rate of solar rays by forming a coating film thinner, by composing the pigment of a mixture of specific oxide or compound oxide mixed with metallic ultrafine powder, in the titled coating composition composed by blending a resin and a pigment with a solvent. CONSTITUTION:In a coating composition of selectively absorbing solar heat, composed of a resin and a pigment mixed with a solvent, the mixture of an oxide or a compound oxide composed of more than one element selected from a group of Fe, Mn, Cu, Cr, Co, and Ni, mixed with metallic ultrafine powder is used as a pigment. By this method, a coating film can be formed thinner, because the covering-up effect of a coating film can be increased, in respects of a solar rays absorbing ability and a transparency to the infrared rays in the oxide or the compound oxide, and also of a scattering effect and the degrees of blackness in the metallic ultrafine powder. By the complex effect of forming the film thinner and the increase of the absorption rate by scattering solar rays to the inside of a coating film and others, the ideal selective absorption characteristics can be obtained in the coating composition. |
