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Highly graphitized polyimide-based graphite thick film and preparation method thereof
The invention discloses a highly graphitized polyimide-based graphite thick film and a preparation method thereof. The preparation method comprises the following steps: preparing a carbon nanotube doped polyimide thick film, then placing the carbon nanotube doped polyimide thick film in a carbonization furnace, carrying out high-temperature carbonization in an argon atmosphere, and finally transferring the carbon nanotube doped polyimide thick film to a graphite furnace for high-temperature graphitization to obtain a highly graphitized graphite thick film. The method is simple in technologicaloperation, free of spraying in the preparation process, mild in conditions, high in practicability and capable of saving energy and easily achieving industrial production, and has industrial prospects. The prepared graphite thick film maintains the advantages of light weight, high use temperature and the like of the graphite film; by introducing the carbon nanotubes, the graphitization degree ofthe polyimide thick film can be improved, the surface and the interior of the polyimide thick film have high graphitization degrees, and the problems of low film forming rate of a finished product andincomplete graphitization of the interior of the finished product are solved, so that the heat-conducting property of the finished product is improved, and the application range of the finished product is widened.
本发明公开了一种高石墨化聚酰亚胺基石墨厚膜及其制备方法，其包括以下步骤：制备碳纳米管掺杂聚酰亚胺厚薄膜，然后放置在碳化炉中，在氩气氛围下高温碳化，最后转移至石墨炉中高温石墨化，即得到高石墨化的石墨厚膜。本发明工艺操作简单，制备过程中不需要喷涂，条件温和，实用性强，节约能源，易于实现工业化生产，具有工业化前景。采用本发明方法制备的石墨厚膜除了保持了石墨膜重量轻、使用温度高等优点外，通过碳纳米管的引入有助于提高聚酰亚胺厚膜的石墨化程度，表面及内部均具有高石墨化程度，解决了成品成膜率不高以及内部石墨化不完全的问题，从而提高成品的导热性能，拓宽了其应用范围。
Highly graphitized polyimide-based graphite thick film and preparation method thereof
The invention discloses a highly graphitized polyimide-based graphite thick film and a preparation method thereof. The preparation method comprises the following steps: preparing a carbon nanotube doped polyimide thick film, then placing the carbon nanotube doped polyimide thick film in a carbonization furnace, carrying out high-temperature carbonization in an argon atmosphere, and finally transferring the carbon nanotube doped polyimide thick film to a graphite furnace for high-temperature graphitization to obtain a highly graphitized graphite thick film. The method is simple in technologicaloperation, free of spraying in the preparation process, mild in conditions, high in practicability and capable of saving energy and easily achieving industrial production, and has industrial prospects. The prepared graphite thick film maintains the advantages of light weight, high use temperature and the like of the graphite film; by introducing the carbon nanotubes, the graphitization degree ofthe polyimide thick film can be improved, the surface and the interior of the polyimide thick film have high graphitization degrees, and the problems of low film forming rate of a finished product andincomplete graphitization of the interior of the finished product are solved, so that the heat-conducting property of the finished product is improved, and the application range of the finished product is widened.
本发明公开了一种高石墨化聚酰亚胺基石墨厚膜及其制备方法，其包括以下步骤：制备碳纳米管掺杂聚酰亚胺厚薄膜，然后放置在碳化炉中，在氩气氛围下高温碳化，最后转移至石墨炉中高温石墨化，即得到高石墨化的石墨厚膜。本发明工艺操作简单，制备过程中不需要喷涂，条件温和，实用性强，节约能源，易于实现工业化生产，具有工业化前景。采用本发明方法制备的石墨厚膜除了保持了石墨膜重量轻、使用温度高等优点外，通过碳纳米管的引入有助于提高聚酰亚胺厚膜的石墨化程度，表面及内部均具有高石墨化程度，解决了成品成膜率不高以及内部石墨化不完全的问题，从而提高成品的导热性能，拓宽了其应用范围。
Highly graphitized polyimide-based graphite thick film and preparation method thereof
一种高石墨化聚酰亚胺基石墨厚膜及其制备方法
ZHANG YI (author) / LI SHUAIZHEN (author) / ZHENG ZHIBO (author) / JIANG XING (author) / CHI ZHENGUO (author) / LIU SIWEI (author) / XU JIARUI (author)
2020-07-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08J
Verarbeitung
,
WORKING-UP
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
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