HEXAGONAL-PLATE-SHAPED ZINC OXIDE PARTICLES, PRODUCTION METHOD THEREFOR, AND COSMETIC MATERIAL, HEAT-DISSIPATING FILLER, HEAT-DISSIPATING RESIN COMPOSITION, HEAT-DISSIPATING GREASE, AND HEAT-DISSIPATING COATING COMPOSITION HAVING SAME BLENDED THEREIN

摘要

[Problem] To obtain: hexagonal-plate-shaped zinc oxide particles capable of being used as a raw material for a cosmetic material, a heat-dissipating filler, etc.; a production method therefor; and a cosmetic material, a heat-dissipating filler, a heat-dissipating resin composition, a heat-dissipating grease, and a heat-dissipating coating composition having same blended therein. [Solution] Hexagonal-plate-shaped zinc oxide particles characterized by having: a primary particle diameter of at least 0.01 µm; an aspect ratio of at least 2.5; at least 50% particles among 250 particles in a transmission electron microscopic photograph fulfilling all conditions under (1) and (2); and a hexagonal surface. (1) The particles must have a hexagonal surface. (2) Dmin/Dmax?0.3 (wherein Dmax indicates the length of the longest diagonal line among three diagonal lines in the hexagonal surface of the hexagonal-plate-shaped zinc oxide particles, and Dmin indicates the length of the shortest diagonal line among three diagonal lines in the hexagonal surface of the hexagonal-plate-shaped zinc oxide particles.)