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Preparation method of carbon nanotube-ceramic composite membrane
The invention discloses a preparation method of a carbon nanotube-ceramic composite membrane. According to the invention, Joule heat spontaneously generated by electrifying a carbon nanotube film is utilized to rapidly cure polycarbosilane in situ in a mode of consuming skeleton carbon, and the polycarbosilane is used as a precursor of silicon carbide ceramic. And sintering at a higher Joule heat temperature, so that organic groups of the polycarbosilane are removed, the polycarbosilane is converted into silicon carbide, and the carbon nanotube-ceramic composite membrane is prepared. The method is characterized in that Joule heat high temperature generated by electrifying the carbon nanotube film with ultrafast heating and cooling characteristics (gt, 500 DEG C/s) replaces traditional muffle furnace heating. Therefore, the whole treatment process has the characteristics of low energy consumption and short time, and a new method is provided for rapidly preparing the high-performance carbon-based composite material.
本发明公开了一种碳纳米管‑陶瓷复合膜的制备方法。该发明利用碳纳米管薄膜通电自发产生的焦耳热，以消耗骨架碳的方式快速原位固化聚碳硅烷，并作为碳化硅陶瓷的前驱体。在更高的焦耳热温度下烧结，使聚碳硅烷脱去有机基团，转化为碳化硅，制得碳纳米管‑陶瓷复合膜。该发明的特点是：以具有超快升温、降温特性（>500℃/秒）的碳纳米管薄膜自身通电而产生的焦耳热高温代替了传统的马弗炉加热。因此整个处理过程具有能耗低、时间短的特点，为快速制备高性能碳基复合材料提供了一种新的方法。
Preparation method of carbon nanotube-ceramic composite membrane
The invention discloses a preparation method of a carbon nanotube-ceramic composite membrane. According to the invention, Joule heat spontaneously generated by electrifying a carbon nanotube film is utilized to rapidly cure polycarbosilane in situ in a mode of consuming skeleton carbon, and the polycarbosilane is used as a precursor of silicon carbide ceramic. And sintering at a higher Joule heat temperature, so that organic groups of the polycarbosilane are removed, the polycarbosilane is converted into silicon carbide, and the carbon nanotube-ceramic composite membrane is prepared. The method is characterized in that Joule heat high temperature generated by electrifying the carbon nanotube film with ultrafast heating and cooling characteristics (gt, 500 DEG C/s) replaces traditional muffle furnace heating. Therefore, the whole treatment process has the characteristics of low energy consumption and short time, and a new method is provided for rapidly preparing the high-performance carbon-based composite material.
本发明公开了一种碳纳米管‑陶瓷复合膜的制备方法。该发明利用碳纳米管薄膜通电自发产生的焦耳热，以消耗骨架碳的方式快速原位固化聚碳硅烷，并作为碳化硅陶瓷的前驱体。在更高的焦耳热温度下烧结，使聚碳硅烷脱去有机基团，转化为碳化硅，制得碳纳米管‑陶瓷复合膜。该发明的特点是：以具有超快升温、降温特性（>500℃/秒）的碳纳米管薄膜自身通电而产生的焦耳热高温代替了传统的马弗炉加热。因此整个处理过程具有能耗低、时间短的特点，为快速制备高性能碳基复合材料提供了一种新的方法。
Preparation method of carbon nanotube-ceramic composite membrane
一种碳纳米管-陶瓷复合膜的制备方法
MENG FANCHENG (author) / CHEN YUZE (author) / LI QIQI (author) / LI YAO (author) / WU HAITONG (author) / WANG YUANJU (author) / ZHAO YIXIN (author)
2022-05-06
Patent
Electronic Resource
Chinese
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