The University of Southampton
University of Southampton Institutional Repository

Dielectric properties and effect of electrical aging on space charge accumulation in polyimide/TiO2 nanocomposite films

Record type: Article

In situ polymerized polyimide/TiO2 ?PI/TiO2? nanocomposite films with good electrical aging resistance are studied. Space charge distribution in the PI/TiO2 nanocomposite films are measured using the pulsed electroacoustic method. Dielectric properties of the films are measured in the frequency range of 102 Hz–106 Hz by an impedance analyzer ?Agilent 4294A? at room temperature. These nanocomposite films are also characterized by Fourier transform infrared spectroscopy and scanning electron microscopy ?SEM?. It is demonstrated that the nano-TiO2 particles strongly affect dielectric breakdown, lifetime and space charge distribution, and increase the voltage endurance of the nanocomposite films significantly. SEM analyses show that the nanocomposite films are destroyed after corona aging. The relation of space charge distribution with the concentration of the nano-TiO2 particles and the aging time is explored. Results show that an increase in dielectric permittivity of the nanocomposite films is observed with increasing filler concentration. However, the accumulation of space charge decreases with increasing nano-TiO2 particles concentration for the same corona aging time, and depends on the dielectric permittivity of the nanocomposite films.

PDF PI_TiO2_Nanocomposite_Chen.pdf - Other
Restricted to Registered users only
Download (801kB)

Citation

Zha, Jun-Wei, Dang, Zhi-Min, Song, Hon-Tao, Yin, Yi and Chen, George (2010) Dielectric properties and effect of electrical aging on space charge accumulation in polyimide/TiO2 nanocomposite films Journal of Applied Physics, 108, p. 94113.

More information

Published date: November 2010
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 271767
URI: http://eprints.soton.ac.uk/id/eprint/271767
ISSN: 0021-8979
PURE UUID: 9e410aa8-b46b-4385-aa80-79027e9f430a

Catalogue record

Date deposited: 09 Dec 2010 13:55
Last modified: 18 Jul 2017 06:39

Export record

Contributors

Author: Jun-Wei Zha
Author: Zhi-Min Dang
Author: Hon-Tao Song
Author: Yi Yin
Author: George Chen

University divisions


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×