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HomeKey Engineering MaterialsKey Engineering Materials Vol. 871Fabrication and Investigation on the...

Fabrication and Investigation on the Polyimide/Al₂O₃ Composite Films via Ion Exchange Technology

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Abstract:

Polyimide/Al₂O₃ films were prepared by the surface modification with different hydrolysis time, ion exchange technique and heat treatment using polyimide films as the substrates and aluminum chloride as the precursor of Al₂O₃. The morphology, thermal properties and electrical properties of the composite films were characterized and tested. The results indicated the alumina distributed in certain thickness on the surface of the films and there was a clear interface layer between the alumina layer and the substrate. The breakdown strength of the composite films maintains the excellent properties of the pristine film while the thermal and corona-resistant time properties of composite films were better than the pristine film due to introducing aluminum oxide. The composite film which used KOH to treat for 90 min has the longest corona-resistant time (101.2 min), which was almost 10 times longer than the pristine film.

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Periodical:

Key Engineering Materials (Volume 871)

Pages:

264-270

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.871.264

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Online since:

January 2021

Authors:

Ming Yu Zhang*, Ya Wang, Li Zhu Liu, Wei Song, Chun Qi Zhang

Keywords:

Composite Film, Corona-Resistant, Ion Exchange, Polyimide

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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