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Dielectric Response of Nano Aluminium Tri-hydrate Filled Silicone Rubber

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journal contribution
posted on 20.04.2018, 09:18 by Leonard A. Dissado, Nikola Mihaylov Chalashkanov, Stephen J. Dodd, et al.
The dielectric response of a nano-ATH (Aluminium Tri-hydrate) filled silicone rubber is investigated over the frequency range 10−4 to 103 Hz and compared with that of the micro-ATH composite. An equivalent circuit has been used to decompose the dielectric response into: a loss peak process, a quasi-dc (Q-DC) process, a dc-conductance and constant high frequency capacitance. It was found that the Q-DC and loss peak were a result of the ATH filler with the loss peak more clearly resolved in the nano-ATH filled material than in the micro-ATH material where it is weaker and partly obscured by the Q-DC process. In contrast to the micro-ATH material the characteristic frequencies of all the dielectric responses in the nano-ATH filled samples have the same activation energy. The physical mechanisms of the Q-DC process and loss peak are discussed in terms of long range transport between nano-ATH clusters and the dipolar behaviour of isolated clusters respectively.

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Citation

Composites Science and Technology, Volume 163, 28 July 2018, Pages 56-62

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Engineering

Version

AM (Accepted Manuscript)

Published in

Composites Science and Technology

Publisher

Elsevier

issn

0266-3538

eissn

1879-1050

Acceptance date

02/04/2018

Copyright date

2018

Available date

03/04/2020

Notes

The file associated with this record is under embargo until 24 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.

Language

en

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