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    • 6. 发明专利
    • SELECTIVE ABSORBING SURFACE FOR SOLAR HEAT
    • JPS57204751A
    • 1982-12-15
    • JP8904881
    • 1981-06-10
    • MATSUSHITA ELECTRIC IND CO LTD
    • FUKUDA YUUMAKI MASAOSANO SEIICHI
    • F24J2/48B32B27/30C09D5/32
    • PURPOSE:To obtain a solar heat selective absorbing surface which is practical and has a more high-performance, by a method wherein a film is formed as a first layer on a supporter with a paint with significance to film physical properties and is prepared through mixture of a pigment and resin, and a film is formed as a second layer with a paint with significance to a selection absorptiveness and is prepared through mixture of less amount of resin. CONSTITUTION:A titled selective absorbing surface for solar heat is constituted such that a paint, which is prepared in the ratio of an inorganic black pigment to acryl series resin being 45/100-65/100, is coated as a first layer on a supporter made of, for example, stainless steel to form a film. said constitution enables to stably obtain a selective absorbing surface having a solar heat absorptivity alpha of 0.95 or more and an infrared radiation factor epsilon of 0.40 or less, and the supporter may be made of copper, Al or the like in addition to stainless steel, and the use of the materials permits to obtain a more excellent selective absorbing surface.