BLACK FINE PARTICULATE NEAR-INFRARED REFLECTIVE MATERIAL, METHOD FOR MANUFACTURING SAME, AND USAGE FOR SAME

摘要

Provided is a black fine particulate near-infrared reflective material having exceptional hiding performance and coloring performance. A black fine particulate near-infrared reflective material which is a perovskite-type complex oxide containing at least an alkaline earth metal element, titanium element, and manganese element, wherein the black fine particulate near-infrared reflective material comprises microparticles in which the BET specific surface area of the powder body is within a range of 3.0-150 m2/g, the black fine particulate near infrared reflective material having exceptional hiding performance and coloring performance. The Hunter L value, as an indicator of blackness, is 30 or less, and the reflectivity at a wavelength of 1200 nm, as an indicator of near-infrared reflective power, is 40% or above. The black fine particular near-infrared reflective material is obtained by mixing an alkaline earth metal compound, a titanium compound, a manganese compound, and other materials in a wet grinding mill and firing the resulting mixture at a temperature of 800-1100° C.

主权项

1. A black fine particulate near-infrared reflective material of a perovskite type composite oxide comprising at least an alkaline earth metal element, a titanium element, and a manganese element, wherein the black fine particulate near-infrared reflective material has a powder BET specific surface area in a range of 3.0 to 150 m2/g, a Hunter L value of 30 or less, and a reflectance of 40% or more at a wavelength of 1200 nm.