HEXABORIDE FINE PARTICLE AGGREGATE, HEXABORIDE FINE PARTICLE DISPERSION LIQUID, HEXABORIDE FINE PARTICLE DISPERSION BODY, HEXABORIDE FINE PARTICLE DISPERSION BODY-LAMINATED TRANSPARENT SUBSTRATE, INFRARED ABSORPTION FILM, AND INFRARED ABSORPTION GLASS

摘要

PROBLEM TO BE SOLVED: To provide a hexaboride fine particle aggregate, a hexaboride fine particle dispersion liquid, a hexaboride fine particle dispersion body, and the like, which have controlled selectivity for absorption wavelength of light and sufficient characteristics as a solar radiation shielding material that shields sunlight.SOLUTION: Provided is an aggregate of hexaboride fine particles, where a ratio of number of fine particles, in which, when the particle shape of the hexaboride fine particles contained in the aggregate is assumed to be oval and axial lengths of the oval is denoted by a, b, and c (where a≥b≥c), (a+c)≥2b and a value of aspect ratio [(longer axis length]/[shorter axis length)=a/c] is 1.2 or more and 5.0 or less, among the particles contained in the aggregate is 60% (number of particles) or more and 100% (number of particles) or less. Also provided are a hexaboride fine particle dispersion liquid, a hexaboride fine particle dispersion body, and the like by using the hexaboride fine particle aggregate.SELECTED DRAWING: None