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Ultra-thick polyimide-based graphite film and preparation method thereof
The preparation method comprises the following steps: alternately compounding a polymer layer formed by casting a polyamide acid solution containing graphene oxide into a film and a fabric layer formed by a porous fabric, and carrying out drying, stretching and thermal imidization on the obtained composite film to obtain a super-thick polyimide film; and carbonizing and graphitizing the super-thick polyimide film in sequence to obtain the super-thick polyimide-based graphite film. The prepared ultra-thick polyimide-based graphite film has the characteristics of uniform foaming, fine appearance and high thermal conductivity, the thermal conductivity can reach 1350W/m.k or above, and the development requirement of the microelectronic field can be met.
本发明公开了一种超厚聚酰亚胺基石墨膜及其制备方法，先将含氧化石墨烯的聚酰胺酸溶液流延成膜形成的聚合物层和多孔织物形成的织物层进行交替复合，将得到的复合膜进行干燥、拉伸、热亚胺化，得到超厚聚酰亚胺薄膜，再将超厚聚酰亚胺薄膜依次经过碳化、石墨化，得到超厚聚酰亚胺基石墨膜。本发明制备的超厚聚酰亚胺基石墨膜具有发泡均匀、表观细腻、导热率高的特点，导热率可达1350W/m·k以上能够满足微电子领域的发展需求。
Ultra-thick polyimide-based graphite film and preparation method thereof
The preparation method comprises the following steps: alternately compounding a polymer layer formed by casting a polyamide acid solution containing graphene oxide into a film and a fabric layer formed by a porous fabric, and carrying out drying, stretching and thermal imidization on the obtained composite film to obtain a super-thick polyimide film; and carbonizing and graphitizing the super-thick polyimide film in sequence to obtain the super-thick polyimide-based graphite film. The prepared ultra-thick polyimide-based graphite film has the characteristics of uniform foaming, fine appearance and high thermal conductivity, the thermal conductivity can reach 1350W/m.k or above, and the development requirement of the microelectronic field can be met.
本发明公开了一种超厚聚酰亚胺基石墨膜及其制备方法，先将含氧化石墨烯的聚酰胺酸溶液流延成膜形成的聚合物层和多孔织物形成的织物层进行交替复合，将得到的复合膜进行干燥、拉伸、热亚胺化，得到超厚聚酰亚胺薄膜，再将超厚聚酰亚胺薄膜依次经过碳化、石墨化，得到超厚聚酰亚胺基石墨膜。本发明制备的超厚聚酰亚胺基石墨膜具有发泡均匀、表观细腻、导热率高的特点，导热率可达1350W/m·k以上能够满足微电子领域的发展需求。
Ultra-thick polyimide-based graphite film and preparation method thereof
一种超厚聚酰亚胺基石墨膜及其制备方法
SUN SHANWEI (author) / HU CHENGPENG (author) / PAN CHENG (author) / FANG CHAO (author) / MEI YAPING (author)
2023-07-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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