Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Boron nitride full-ceramic particle as well as preparation method and application thereof
The invention provides a boron nitride full-ceramic particle and a preparation method and application thereof, and the preparation method comprises the following steps: providing a two-dimensional boron nitride dispersion liquid which comprises a two-dimensional boron nitride nanosheet and an organic solvent. Adding an organic binder into the two-dimensional boron nitride dispersion liquid to obtain a mixed liquid; granulating the mixed solution by spray drying to obtain a precursor; pre-sintering the precursor in an oxygen-containing atmosphere to remove the organic binder in the precursor so as to obtain an intermediate; and sintering the intermediate in inert gas by Joule heat to obtain the boron nitride full-ceramic particles. According to the boron nitride all-ceramic particle provided by the invention, the two-dimensional boron nitride nanosheets are wrapped and assembled layer by layer to form a compact sphere, and the two-dimensional boron nitride nanosheets in the spherical particle are mutually sintered and bonded, so that the boron nitride all-ceramic particle has excellent mechanical structure stability and thermal conductivity.
本申请提供了一种氮化硼全陶瓷颗粒、其制备方法及应用，包括：提供二维氮化硼分散液，所述二维氮化硼分散液包括二维氮化硼纳米片和有机溶剂。在所述二维氮化硼分散液中加入有机粘结剂，得到混合液；采用喷雾干燥对所述混合液造粒，得到前驱体；在含氧气氛中，对所述前驱体进行预烧结，以除去所述前驱体中的所述有机粘结剂，得到中间体；在惰性气体中，采用焦耳热烧结所述中间体，得到氮化硼全陶瓷颗粒。本申请提供的氮化硼全陶瓷颗粒中二维氮化纳米片经过层层包裹组装形成致密的球体，球形颗粒中二维氮化硼纳米片之间相互烧结键合，使得氮化硼全陶瓷颗粒具有优异的机械结构稳定性和导热性。
Boron nitride full-ceramic particle as well as preparation method and application thereof
The invention provides a boron nitride full-ceramic particle and a preparation method and application thereof, and the preparation method comprises the following steps: providing a two-dimensional boron nitride dispersion liquid which comprises a two-dimensional boron nitride nanosheet and an organic solvent. Adding an organic binder into the two-dimensional boron nitride dispersion liquid to obtain a mixed liquid; granulating the mixed solution by spray drying to obtain a precursor; pre-sintering the precursor in an oxygen-containing atmosphere to remove the organic binder in the precursor so as to obtain an intermediate; and sintering the intermediate in inert gas by Joule heat to obtain the boron nitride full-ceramic particles. According to the boron nitride all-ceramic particle provided by the invention, the two-dimensional boron nitride nanosheets are wrapped and assembled layer by layer to form a compact sphere, and the two-dimensional boron nitride nanosheets in the spherical particle are mutually sintered and bonded, so that the boron nitride all-ceramic particle has excellent mechanical structure stability and thermal conductivity.
本申请提供了一种氮化硼全陶瓷颗粒、其制备方法及应用，包括：提供二维氮化硼分散液，所述二维氮化硼分散液包括二维氮化硼纳米片和有机溶剂。在所述二维氮化硼分散液中加入有机粘结剂，得到混合液；采用喷雾干燥对所述混合液造粒，得到前驱体；在含氧气氛中，对所述前驱体进行预烧结，以除去所述前驱体中的所述有机粘结剂，得到中间体；在惰性气体中，采用焦耳热烧结所述中间体，得到氮化硼全陶瓷颗粒。本申请提供的氮化硼全陶瓷颗粒中二维氮化纳米片经过层层包裹组装形成致密的球体，球形颗粒中二维氮化硼纳米片之间相互烧结键合，使得氮化硼全陶瓷颗粒具有优异的机械结构稳定性和导热性。
Boron nitride full-ceramic particle as well as preparation method and application thereof
氮化硼全陶瓷颗粒、其制备方法及应用
QIU LING (Autor:in) / CHENG HUIMING (Autor:in) / DING SIYUAN (Autor:in) / LIU MINSU (Autor:in)
29.03.2024
Patent
Elektronische Ressource
Chinesisch
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