SPHERICAL ALUMINA PARTICLE MIXTURE, METHOD FOR PRODUCING THE SAME, RESIN COMPOSITE COMPOSITION CONTAINING THE SPHERICAL ALUMINA PARTICLE MIXTURE, AND RESIN COMPOSITE

• Main Authors: YAGI KATSUMASA, TANAKA MUTSUTO, NUMAO RYUTARO, AOYAMA YASUHIRO, AE MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 31.10.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To provide a spherical alumina particle mixture capable of improving thermal conductivity of a resin composition formed when mixed with a resin and suppressing viscosity, and to provide a method for producing the same.SOLUTION: Provided is a spherical alumina particle mixture having 0.04 wt.% or less of particles of 180 μm or more in a particle size distribution measured by a wet particle size test method, an α ratio of 45% or more, a specific surface area of 0.3 to 1.0 m2/g, and a circularity of 0.85 or more. Also provided is a method for producing the same.SELECTED DRAWING: None 【課題】樹脂と混錬した際にできる樹脂組成物の熱伝導率を向上させ、且つ粘性を抑えることができる球状アルミナ粒子混合物とその製造方法の提供を課題とする。【解決手段】湿式粒度試験法によって測定された粒度分布において、１８０μｍ以上の粒子が０．０４重量％以下であること、α化率が４５％以上であること、比表面積が０．３～１．０ｍ２／ｇであること、及び、円形度が０．８５以上であること、を特徴とする、球状アルミナ粒子混合物、およびその製造方法。【選択図】なし