ALUMINUM NITRIDE POWDER NOT CONTAINING COARSE PARTICLES

Provided is an aluminum nitride powder having few coarse particles. Also provided is an aluminum nitride powder that makes it possible to obtain a resin composition having high resin affinity and highmoisture resistance. The aluminum nitride powder has a volume-average particle size D50 of 0.5-7.0 u...

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Bibliographische Detailangaben
Hauptverfasser: INAKI YOSHITAKA, IMOTO YASUSHI, HIMENO MASATAKA, YAMAMOTO YASUYUKI
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:Provided is an aluminum nitride powder having few coarse particles. Also provided is an aluminum nitride powder that makes it possible to obtain a resin composition having high resin affinity and highmoisture resistance. The aluminum nitride powder has a volume-average particle size D50 of 0.5-7.0 um in a particle size distribution as measured by a laser diffraction scattering-type particle sizedistribution meter, a D90/D50 ratio of 1.3-3.5, and a BET specific surface area of 0.4-6.0 m2/g. The aluminum nitride powder is obtained by classifying and removing coarse particles having a particlesize exceeding five times the D90. When a resin paste obtained from this nitride aluminum powder and a resin is measured using a grind gauge, an upper limit particle size at which streaks occur is five times the D90 or less. As a result of additionally performing surface modification of the classified aluminum nitride powder, the present invention makes it possible to obtain an aluminum nitride powder that has high resin fi