Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Boron nitride spherical powder as well as preparation process and production equipment thereof
According to the boron nitride spherical powder and the preparation method and production equipment thereof, flaky boron nitride powder is introduced into high-temperature plasma, the boron nitride powder is molten at high temperature to form liquid drops, the liquid drops are collided and agglomerated to form particles, and the particles are cooled to form the boron nitride spherical powder. The boron nitride spherical powder disclosed by the invention is composed of fine hexagonal flaky boron nitride, and the fine boron nitride flaky bodies are tightly communicated through high-temperature density increase, so that heat conduction channels in all directions are ensured to be of a flaky structure. The spherical powder is of a hexagonal two-dimensional structure microcosmically and also shows a three-dimensional heat conduction path structure macroscopically, so that the filling rate of the boron nitride spherical powder is increased. The invention provides a preparation method of boron nitride spherical powder, which comprises the following steps: introducing flaky boron nitride powder into high-temperature plasma, and melting flaky hexagonal boron nitride to form a sphere, so that on one hand, the boron nitride powder is densified, and on the other hand, various flaky structures are mixed together to form a heat conduction path in multiple directions; and other heat-conducting fillers do not need to be added.
本发明提出了一种氮化硼球形粉体及其制备方法、生产设备，将片状氮化硼粉体通入到高温等离子体中，在高温下氮化硼的粉体熔融形成液滴，碰撞团聚后成为颗粒，经冷却形成氮化硼球形粉体。本发明氮化硼球形粉体由细小的六方体片状氮化硼构成，经过高温致密度增加，细小的氮化硼片状体紧密联通，从而保证了各个方向的导热通路均为片状结构。球形粉微观上为六方二维结构，宏观上又显示出三维导热通路结构，从而增加了氮化硼球形粉填充率。本发明提供了一种氮化硼球形粉体的制备方法，将片状氮化硼粉体通入到高温等离子体中，将片状的六方氮化硼熔融形成球形，一方面致密化了氮化硼粉体，另一方面多种片状结构夹杂在一起，构成了多个方向的导热通路，而不需要添加其他导热填料。
Boron nitride spherical powder as well as preparation process and production equipment thereof
According to the boron nitride spherical powder and the preparation method and production equipment thereof, flaky boron nitride powder is introduced into high-temperature plasma, the boron nitride powder is molten at high temperature to form liquid drops, the liquid drops are collided and agglomerated to form particles, and the particles are cooled to form the boron nitride spherical powder. The boron nitride spherical powder disclosed by the invention is composed of fine hexagonal flaky boron nitride, and the fine boron nitride flaky bodies are tightly communicated through high-temperature density increase, so that heat conduction channels in all directions are ensured to be of a flaky structure. The spherical powder is of a hexagonal two-dimensional structure microcosmically and also shows a three-dimensional heat conduction path structure macroscopically, so that the filling rate of the boron nitride spherical powder is increased. The invention provides a preparation method of boron nitride spherical powder, which comprises the following steps: introducing flaky boron nitride powder into high-temperature plasma, and melting flaky hexagonal boron nitride to form a sphere, so that on one hand, the boron nitride powder is densified, and on the other hand, various flaky structures are mixed together to form a heat conduction path in multiple directions; and other heat-conducting fillers do not need to be added.
本发明提出了一种氮化硼球形粉体及其制备方法、生产设备，将片状氮化硼粉体通入到高温等离子体中，在高温下氮化硼的粉体熔融形成液滴，碰撞团聚后成为颗粒，经冷却形成氮化硼球形粉体。本发明氮化硼球形粉体由细小的六方体片状氮化硼构成，经过高温致密度增加，细小的氮化硼片状体紧密联通，从而保证了各个方向的导热通路均为片状结构。球形粉微观上为六方二维结构，宏观上又显示出三维导热通路结构，从而增加了氮化硼球形粉填充率。本发明提供了一种氮化硼球形粉体的制备方法，将片状氮化硼粉体通入到高温等离子体中，将片状的六方氮化硼熔融形成球形，一方面致密化了氮化硼粉体，另一方面多种片状结构夹杂在一起，构成了多个方向的导热通路，而不需要添加其他导热填料。
Boron nitride spherical powder as well as preparation process and production equipment thereof
一种氮化硼球形粉体及其制备工艺、生产设备
LI YONGSHENG (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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