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Graphite films prepared from carbonized polyimide films

✍ Scribed by Yoshihiro Hishiyama; Akira Yoshida; Yutaka Kaburagi; Michio Inagaki

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
798 KB
Volume
30
Category
Article
ISSN
0008-6223

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✦ Synopsis

Graphitizability of various carbonized polyimide films heat treated at 2950Β°C was studied by X-ray and magnetoresistance measurements and SEM observation. The films used were commercially available polyimide films, Kapton and Upilex, and two kinds of laboratory-prepared polyimide films.

Results obtained show experimental evidence that there are three conditions involved in obtaining highly graphitizable carbon films; (1) flatness of original organic molecules, (2) high degree of their orientation and (3) simple release of non-carbon atoms during carbonization.

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