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Effect of water on the breakdown and dielectric response of polypropylene/nano aluminium nitride composites

Effect of water on the breakdown and dielectric response of polypropylene/nano aluminium nitride composites
Effect of water on the breakdown and dielectric response of polypropylene/nano aluminium nitride composites
The influence of water immersion and silane treatment on the AC breakdown and the complex dielectric response of polypropylene/nano-aluminium nitride (PP/nano-AlN) composites has been investigated. The as-received filler was examined to have a nanoscale particle distribution with a hexagonal shape and slight hydrolysation. Grafting the aluminium nitride with an octyl silane reduces the weight increase in samples filled with 10 wt% of aluminium nitride during water immersion by 3, from 0.29 to 0.09%. The results suggest that the AC breakdown strength and complex permittivity of “wet” composite samples are related to the silane treatment of the nanofiller. The AC breakdown strength of octyl silane-treated samples after 9 days of water immersion shows comparable results to the dry samples, while a reduction can be seen on non-treated samples. Although silane-treated samples still show an increased dielectric loss at low frequency after water immersion, a significant reduction in low-frequency dispersion of real and imaginary permittivity can be seen when compared to the non-treated composites. This indicates that significant gains can be obtained for PP/nano-AlN composites by suitable silane treatments.
0022-2461
8900-8916
Wang, Xinyu
b0de6d39-87db-4bda-a097-a8ec50804a4a
Qiang, Dayuan
4f531e47-dd5c-48ea-be89-9cee7cfa42d8
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Zhu, Yanqiu
b37b025c-7f30-4e52-81a4-de9b8ffc08d6
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Wang, Xinyu
b0de6d39-87db-4bda-a097-a8ec50804a4a
Qiang, Dayuan
4f531e47-dd5c-48ea-be89-9cee7cfa42d8
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Zhu, Yanqiu
b37b025c-7f30-4e52-81a4-de9b8ffc08d6
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c

Wang, Xinyu, Qiang, Dayuan, Hosier, Ian, Zhu, Yanqiu, Chen, George and Andritsch, Thomas (2020) Effect of water on the breakdown and dielectric response of polypropylene/nano aluminium nitride composites. Journal of Materials Science, 55 (21), 8900-8916. (doi:10.1007/s10853-020-04635-1).

Record type: Article

Abstract

The influence of water immersion and silane treatment on the AC breakdown and the complex dielectric response of polypropylene/nano-aluminium nitride (PP/nano-AlN) composites has been investigated. The as-received filler was examined to have a nanoscale particle distribution with a hexagonal shape and slight hydrolysation. Grafting the aluminium nitride with an octyl silane reduces the weight increase in samples filled with 10 wt% of aluminium nitride during water immersion by 3, from 0.29 to 0.09%. The results suggest that the AC breakdown strength and complex permittivity of “wet” composite samples are related to the silane treatment of the nanofiller. The AC breakdown strength of octyl silane-treated samples after 9 days of water immersion shows comparable results to the dry samples, while a reduction can be seen on non-treated samples. Although silane-treated samples still show an increased dielectric loss at low frequency after water immersion, a significant reduction in low-frequency dispersion of real and imaginary permittivity can be seen when compared to the non-treated composites. This indicates that significant gains can be obtained for PP/nano-AlN composites by suitable silane treatments.

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More information

Accepted/In Press date: 31 March 2020
e-pub ahead of print date: 16 April 2020
Published date: 16 April 2020

Identifiers

Local EPrints ID: 439517
URI: http://eprints.soton.ac.uk/id/eprint/439517
ISSN: 0022-2461
PURE UUID: ea740747-5949-4e57-a8e1-4dcb6db4d8ef
ORCID for Xinyu Wang: ORCID iD orcid.org/0000-0001-9434-2906
ORCID for Ian Hosier: ORCID iD orcid.org/0000-0003-4365-9385
ORCID for Thomas Andritsch: ORCID iD orcid.org/0000-0002-3462-022X

Catalogue record

Date deposited: 24 Apr 2020 16:44
Last modified: 15 Sep 2021 02:13

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Contributors

Author: Xinyu Wang ORCID iD
Author: Dayuan Qiang
Author: Ian Hosier ORCID iD
Author: Yanqiu Zhu
Author: George Chen
Author: Thomas Andritsch ORCID iD

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