Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rapid preparation method of large-area hexagonal boron nitride film
The invention discloses a rapid preparation method of a large-area hexagonal boron nitride film, which comprises the following steps: step 1, spraying a hexagonal boron nitride nanosheet aqueous dispersion onto first carbon paper, drying, and forming a physically connected loose film on the first carbon paper by boron nitride nanosheets; 2, the first carbon paper dried in the step 1 is placed in an argon atmosphere, pulse current is applied to the first carbon paper through an excitation power source, when the current passes through the first carbon paper, the first carbon paper is instantly heated to 2400-3000 K and then reaches a plasma state, and the boron nitride nanosheets are heated to a molten state; and when the current is interrupted, the temperature returns to the normal temperature, annealing is completed, and after the periodic heating and annealing process is completed, the boron nitride nanosheets are welded to form a chemically connected compact film on the first carbon paper. The preparation method is high in production efficiency, and the prepared film is better in quality and free of particles and cracks; and a large-area hexagonal boron nitride film can be prepared.
本发明公开了一种大面积六方氮化硼薄膜的快速制备方法，包括以下步骤：步骤一：将六方氮化硼纳米片水分散液喷涂至第一碳纸上，烘干，氮化硼纳米片在第一碳纸上形成物理连接的松散薄膜；步骤二：将步骤一烘干后的第一碳纸置于氩气氛围内，通过激励电源对第一碳纸施加脉冲电流，电流通过时，第一碳纸瞬间升温至2400K‑3000K后达到等离子体态，将氮化硼纳米片加热至熔融状态；电流中断时，温度回到常温，完成退火，周期性的升温和退火过程结束后，氮化硼纳米片被焊接后在第一碳纸上形成化学连接的紧密薄膜。本发明的制备方法生产效率高，制备得到的薄膜质量更好，无颗粒和龟裂；能够制备大面积的六方氮化硼薄膜。
Rapid preparation method of large-area hexagonal boron nitride film
The invention discloses a rapid preparation method of a large-area hexagonal boron nitride film, which comprises the following steps: step 1, spraying a hexagonal boron nitride nanosheet aqueous dispersion onto first carbon paper, drying, and forming a physically connected loose film on the first carbon paper by boron nitride nanosheets; 2, the first carbon paper dried in the step 1 is placed in an argon atmosphere, pulse current is applied to the first carbon paper through an excitation power source, when the current passes through the first carbon paper, the first carbon paper is instantly heated to 2400-3000 K and then reaches a plasma state, and the boron nitride nanosheets are heated to a molten state; and when the current is interrupted, the temperature returns to the normal temperature, annealing is completed, and after the periodic heating and annealing process is completed, the boron nitride nanosheets are welded to form a chemically connected compact film on the first carbon paper. The preparation method is high in production efficiency, and the prepared film is better in quality and free of particles and cracks; and a large-area hexagonal boron nitride film can be prepared.
本发明公开了一种大面积六方氮化硼薄膜的快速制备方法，包括以下步骤：步骤一：将六方氮化硼纳米片水分散液喷涂至第一碳纸上，烘干，氮化硼纳米片在第一碳纸上形成物理连接的松散薄膜；步骤二：将步骤一烘干后的第一碳纸置于氩气氛围内，通过激励电源对第一碳纸施加脉冲电流，电流通过时，第一碳纸瞬间升温至2400K‑3000K后达到等离子体态，将氮化硼纳米片加热至熔融状态；电流中断时，温度回到常温，完成退火，周期性的升温和退火过程结束后，氮化硼纳米片被焊接后在第一碳纸上形成化学连接的紧密薄膜。本发明的制备方法生产效率高，制备得到的薄膜质量更好，无颗粒和龟裂；能够制备大面积的六方氮化硼薄膜。
Rapid preparation method of large-area hexagonal boron nitride film
一种大面积六方氮化硼薄膜的快速制备方法
HUANG JIALIANG (Autor:in) / YU WEICHENG (Autor:in) / GUO LIANG (Autor:in) / ZHU YU (Autor:in) / GUO SHIJIA (Autor:in) / LIU FENG (Autor:in) / FANG ZHI (Autor:in)
07.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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