| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat ray shielding material excellent in the reflectance for infrared rays such as near infrared rays and in the transmittance for visible rays. <P>SOLUTION: The heat ray shielding material comprises: a substrate; and a metal particle-containing layer containing at least one kind of metal particles on the substrate. The metal particles contain metal planar particles having an approximately hexagonal or disk shape by 60% by number or more, and shows a coefficient of variation of at most 20% in the distribution of distances between centers of adjoining metal planar particles. An area ratio [(B/A)×100], which is a proportion of the total B of areas of the metal planar particles with respect to the area A of the substrate when the heat-ray shielding material is observed from above, is preferably 20% or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
