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High-thermal-conductivity carbide or nitride spherical powder with core-shell structure and preparation method of high-thermal-conductivity carbide or nitride spherical powder
The invention discloses high-thermal-conductivity carbide or nitride spherical powder with a core-shell structure and a preparation method of the high-thermal-conductivity carbide or nitride spherical powder, the inner core of the spherical powder is a compact carbide or nitride high-thermal-conductivity material sintered at high temperature, and the outer shell of the spherical powder is a plasma spheroidized oxide material. The internal carbide or nitride with high thermal conductivity is subjected to the processes of granulation, isostatic cool pressing, pre-sintering, crushing and screening, decarburization, secondary sintering and the like, the density of the core material is improved, the thermal conduction effect of the core material is ensured, the external oxide material can be quickly melted after plasma spheroidizing treatment, and the thermal conductivity of the core material is improved. And under the action of surface tension, the internal high-heat-conductivity material is coated into a perfect sphere, so that the filling amount of the finally prepared powder in the resin is greatly increased, and the heat conductivity of the heat-conducting resin material is remarkably improved.
本发明公开了一种具有核壳结构的高导热碳化物或氮化物球形粉体及其制备方法，所述球形粉体的内核是经高温烧结的致密碳化物或氮化物高导热材料，外壳是等离子体球化的氧化物材料，制备过程中，内部高导热的碳化物或氮化物经过了造粒、冷等静压、预烧结、破碎及筛分、脱碳和二次烧结等工艺，提高了内核材料的致密度，保证了内核材料的导热效果，外部的氧化物材料经过等离子球化处理可以迅速熔化，并在表面张力作用下将内部的高导热材料包覆成完美的球形，使得最终制得的粉体在树脂中的填充量得到大幅度提升，显著提升导热树脂材料的热导率。
High-thermal-conductivity carbide or nitride spherical powder with core-shell structure and preparation method of high-thermal-conductivity carbide or nitride spherical powder
The invention discloses high-thermal-conductivity carbide or nitride spherical powder with a core-shell structure and a preparation method of the high-thermal-conductivity carbide or nitride spherical powder, the inner core of the spherical powder is a compact carbide or nitride high-thermal-conductivity material sintered at high temperature, and the outer shell of the spherical powder is a plasma spheroidized oxide material. The internal carbide or nitride with high thermal conductivity is subjected to the processes of granulation, isostatic cool pressing, pre-sintering, crushing and screening, decarburization, secondary sintering and the like, the density of the core material is improved, the thermal conduction effect of the core material is ensured, the external oxide material can be quickly melted after plasma spheroidizing treatment, and the thermal conductivity of the core material is improved. And under the action of surface tension, the internal high-heat-conductivity material is coated into a perfect sphere, so that the filling amount of the finally prepared powder in the resin is greatly increased, and the heat conductivity of the heat-conducting resin material is remarkably improved.
本发明公开了一种具有核壳结构的高导热碳化物或氮化物球形粉体及其制备方法，所述球形粉体的内核是经高温烧结的致密碳化物或氮化物高导热材料，外壳是等离子体球化的氧化物材料，制备过程中，内部高导热的碳化物或氮化物经过了造粒、冷等静压、预烧结、破碎及筛分、脱碳和二次烧结等工艺，提高了内核材料的致密度，保证了内核材料的导热效果，外部的氧化物材料经过等离子球化处理可以迅速熔化，并在表面张力作用下将内部的高导热材料包覆成完美的球形，使得最终制得的粉体在树脂中的填充量得到大幅度提升，显著提升导热树脂材料的热导率。
High-thermal-conductivity carbide or nitride spherical powder with core-shell structure and preparation method of high-thermal-conductivity carbide or nitride spherical powder
具有核壳结构的高导热碳化物或氮化物球形粉体及其制备方法
ZHOU YAN (author) / XU ZHUANGZHI (author) / ABDELBIEK TANGUER (author) / YANG YONGZHI (author)
2024-01-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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