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Fabrication and characterization of polyimide/Al2O3 composite films via surface modification and ion exchange technique

M.Y. Zhang (School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, People’s Republic of China)
L.Z. Liu (School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, People’s Republic of China AND Key Laboratory of Engineering Dielectric and Its Application, College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Ministry of Education, Harbin, People’s Republic of China)
L. Weng (School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, People’s Republic of China)
W.W. Cui (School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, People’s Republic of China)
K.S. Hui (Department of Mechanical Convergence Engineering, Hanyang University, Seoul, Republic of Korea.)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 4 January 2016

366

Abstract

Purpose

The aim of this study was to fabricate polyimide (PI)/Al2O3 composite films via surface modification and ion exchange techniques, and examine their properties.

Design/methodology/approach

The method involves hydrolyzing the PI film double surface layers in an aqueous potassium hydroxide (KOH) solution and incorporating aluminium ions (Al3+) into the hydrolyzed layers of the PI film via subsequent ion exchange, followed by a treatment of the Al3+-loaded PI films with an aqueous ammonia solution, which leads to the formation of Al(OH)3 in the surface-modified layers. After a final thermal annealing treatment in ambient air, the Al(OH)3 decomposes to Al2O3, and forms composite layers on both surfaces of the re-imidized PI film.

Findings

The PI/Al2O3 composite film obtained with a 6 hours of KOH treatment exhibited excellent thermal stability, good mechanical properties and better electric breakdown strength and corona-resistance properties than the pristine PI film.

Practical implications

The method for obtaining the composite films in this paper is worth consideration, but additional research will be needed. Furthermore, this method is of general importance for the fabrication of composite PI films with tailored properties.

Originality/value

This study showed that surface modification and ion-exchange techniques are powerful methodologies for the fabrication of PI/Al2O3 composite films.

Keywords

Acknowledgements

This work was in part supported by the National Natural Science Foundation of China (50137010, 51177030), the Natural Science Major Foundation of Heilongjiang Province of China (ZD201004), the key Science and Technology project of Heilongjiang Provincial Education Department (12511z007), the Science and Technology project of Heilongjiang Provincial Education Department (12511074) and the Research Fund of Hanyang University (HY-2013 year), to which the authors are deeply indebted.

Citation

Zhang, M.Y., Liu, L.Z., Weng, L., Cui, W.W. and Hui, K.S. (2016), "Fabrication and characterization of polyimide/Al2O3 composite films via surface modification and ion exchange technique", Pigment & Resin Technology, Vol. 45 No. 1, pp. 30-37. https://doi.org/10.1108/PRT-01-2015-0009

Publisher

:

Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited

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