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Boron nitride coated spherical aluminum nitride composite material and preparation method thereof
The invention discloses a boron nitride-coated spherical aluminum nitride composite material and a preparation method thereof, and belongs to the field of preparation of boron nitride-spherical aluminum nitride composites.The preparation method is characterized in that a compact hexagonal boron nitride layer is sintered on the surface of spherical aluminum nitride, composite particles of the compact boron nitride layer are obtained through the oxidation reaction of hexagonal boron nitride, and the boron nitride-coated spherical aluminum nitride composite material is obtained. The problems that in the prior art, spherical aluminum nitride powder is seriously hydrated, so that the thermal conductivity of spherical aluminum nitride becomes poor, the sphericity degree of a spherical core is reduced, finally, the thermal conductivity of core-shell structure composite particles is reduced, and a composite material containing an organic coating layer can only be used for a specific filling system are solved. The method is mainly applied to production of the boron nitride-spherical aluminum nitride composite material.
本发明公开了一种氮化硼包覆球形氮化铝的复合材料及其制备方法，属于氮化硼‑球形氮化铝复合材料制备领域，其特征在于，在球形氮化铝表面烧结一层致密的六方氮化硼层，利用六方氮化硼的氧化反应，获得致密氮化硼层的复合颗粒，解决了现有技术使球形氮化铝粉严重水化，导致球形氮化铝导热变差及球形内核球形度下降，最终导致核壳结构复合颗粒导热率降低及含有机包覆层的复合材料只能用于特定填充体系的问题，主要应用于生产氮化硼‑球形氮化铝复合材料方面。
Boron nitride coated spherical aluminum nitride composite material and preparation method thereof
The invention discloses a boron nitride-coated spherical aluminum nitride composite material and a preparation method thereof, and belongs to the field of preparation of boron nitride-spherical aluminum nitride composites.The preparation method is characterized in that a compact hexagonal boron nitride layer is sintered on the surface of spherical aluminum nitride, composite particles of the compact boron nitride layer are obtained through the oxidation reaction of hexagonal boron nitride, and the boron nitride-coated spherical aluminum nitride composite material is obtained. The problems that in the prior art, spherical aluminum nitride powder is seriously hydrated, so that the thermal conductivity of spherical aluminum nitride becomes poor, the sphericity degree of a spherical core is reduced, finally, the thermal conductivity of core-shell structure composite particles is reduced, and a composite material containing an organic coating layer can only be used for a specific filling system are solved. The method is mainly applied to production of the boron nitride-spherical aluminum nitride composite material.
本发明公开了一种氮化硼包覆球形氮化铝的复合材料及其制备方法，属于氮化硼‑球形氮化铝复合材料制备领域，其特征在于，在球形氮化铝表面烧结一层致密的六方氮化硼层，利用六方氮化硼的氧化反应，获得致密氮化硼层的复合颗粒，解决了现有技术使球形氮化铝粉严重水化，导致球形氮化铝导热变差及球形内核球形度下降，最终导致核壳结构复合颗粒导热率降低及含有机包覆层的复合材料只能用于特定填充体系的问题，主要应用于生产氮化硼‑球形氮化铝复合材料方面。
Boron nitride coated spherical aluminum nitride composite material and preparation method thereof
一种氮化硼包覆球形氮化铝的复合材料及其制备方法
YU XINGQIANG (author) / LI XIAODONG (author) / CAO JIAKAI (author) / ZHANG JIANPING (author)
2024-09-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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