阅读说明：本技术 六方氮化硼粉末及其生产方法和使用其的组合物和散热材料 (Hexagonal boron nitride powder, method for producing same, and composition and heat dissipating material using same ) 是由 深泽贤 大冢雄树 于 2018-11-07 设计创作，主要内容包括：提供了当用作绝缘散热材料的填料时可提高树脂的热导率和耐受电压的h-BN粉末及其生产方法,和使用h-BN粉末的组合物和散热材料。使用如下所述的h-BN粉末：其中平均初级颗粒直径、D<Sub>50</Sub>、BET比表面积和堆积密度在预定范围内,并且对于在颗粒度分布曲线中在大于等于1.0μm且小于20.0μm的颗粒直径范围内的峰A和在大于等于20.0μm且小于200.0μm的颗粒直径范围内的峰B,当在预定条件下处理h-BN粉末时峰高比在预定范围内。(Provided are an h-BN powder which can improve the thermal conductivity and withstand voltage of a resin when used as a filler for an insulating heat dissipating material, a method for producing the same, and a composition and a heat dissipating material using the h-BN powder. The following h-BN powders were used: wherein the average primary particle diameter, D 50 BET specific surface area and bulk density are in predetermined ranges, and for a peak A in a particle diameter range of 1.0 μm or more and less than 20.0 μm and a peak B in a particle diameter range of 20.0 μm or more and less than 200.0 μm in a particle size distribution curve, whenThe peak height ratio is within a predetermined range when the h-BN powder is processed under predetermined conditions.)