The University of Southampton
University of Southampton Institutional Repository

Dielectric properties of epoxy/POSS and PE/POSS systems

Dielectric properties of epoxy/POSS and PE/POSS systems
Dielectric properties of epoxy/POSS and PE/POSS systems
In many applications in electronic power, and high-voltage engineering, there is a need to improve the electrical properties of existing insulation systems and/or to develop novel insulation materials with properties more suitable with the changing requirements, particularly in the electrotechnical area. During the last few decades, a considerable attention has been given to the possible use of polymeric nanocomposites systems, usually a nonconductive polymer containing nanometric inorganic fillers, as a replacement to the neat polymers offering better electrical and thermal properties. There is almost, nowadays, a consensus among the scientific community that such property enhancements can only be achieved when the nano-fillers present a reasonably good size dispersion and spatial distribution within the host polymer. However, due to nano-fillers’ strong tendency to agglomerate and their generally poor compatibility with commonly used polymers, to reach optimal dispersions has been found challenging in most cases. In order to improve the polymer/particles’ compatibility and therefore to avoid agglomeration and poor-dispersion problems, polyhedral oligomeric silsesquioxanes (POSS) appear to be a filler of choice since they are by nature nanoscaled molecules bearing built-in functionalities which can be selected according to the chemical nature of the host polymer. This chapter summarizes the investigations that were reported so far on the electrical properties of epoxy/POSS, PE/POSS, and PP/POSS systems. The general conclusion is that in the case of polyolefin/POSS composites, nanoscale dispersion was found to be hard to reach despite the selection alkyl-type POSS and the dielectric properties were not found to be strongly improved while in the case of epoxy/POSS systems, the selection of appropriate POSS compounds and a carefully chosen resin/additive/hardener ratio allow nanoscale dispersion accompanied with noticeable improvements of the dielectric properties.
Springer International Publishing
David, Eric
d210f179-06d4-438e-b4ad-a43aa6ffcf7e
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Kalia, Susheel
Pielichowski, Kryzysztof
David, Eric
d210f179-06d4-438e-b4ad-a43aa6ffcf7e
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Kalia, Susheel
Pielichowski, Kryzysztof

David, Eric and Andritsch, Thomas (2019) Dielectric properties of epoxy/POSS and PE/POSS systems. In, Kalia, Susheel and Pielichowski, Kryzysztof (eds.) Polymer/POSS Nanocomposites and Hybrid Materials: Preparation, Properties, Applications. (Springer Series on Polymer and Composite Materials) 1 ed. Springer International Publishing.

Record type: Book Section

Abstract

In many applications in electronic power, and high-voltage engineering, there is a need to improve the electrical properties of existing insulation systems and/or to develop novel insulation materials with properties more suitable with the changing requirements, particularly in the electrotechnical area. During the last few decades, a considerable attention has been given to the possible use of polymeric nanocomposites systems, usually a nonconductive polymer containing nanometric inorganic fillers, as a replacement to the neat polymers offering better electrical and thermal properties. There is almost, nowadays, a consensus among the scientific community that such property enhancements can only be achieved when the nano-fillers present a reasonably good size dispersion and spatial distribution within the host polymer. However, due to nano-fillers’ strong tendency to agglomerate and their generally poor compatibility with commonly used polymers, to reach optimal dispersions has been found challenging in most cases. In order to improve the polymer/particles’ compatibility and therefore to avoid agglomeration and poor-dispersion problems, polyhedral oligomeric silsesquioxanes (POSS) appear to be a filler of choice since they are by nature nanoscaled molecules bearing built-in functionalities which can be selected according to the chemical nature of the host polymer. This chapter summarizes the investigations that were reported so far on the electrical properties of epoxy/POSS, PE/POSS, and PP/POSS systems. The general conclusion is that in the case of polyolefin/POSS composites, nanoscale dispersion was found to be hard to reach despite the selection alkyl-type POSS and the dielectric properties were not found to be strongly improved while in the case of epoxy/POSS systems, the selection of appropriate POSS compounds and a carefully chosen resin/additive/hardener ratio allow nanoscale dispersion accompanied with noticeable improvements of the dielectric properties.

Text
Chapter_submitted - Accepted Manuscript
Restricted to Repository staff only until 19 February 2020.
Available under License Other.
Request a copy
Text
Chapter7_proof - Accepted Manuscript
Restricted to Repository staff only
Request a copy

More information

Submitted date: 2018
e-pub ahead of print date: 14 February 2019
Published date: 2019

Identifiers

Local EPrints ID: 425748
URI: https://eprints.soton.ac.uk/id/eprint/425748
PURE UUID: b251b725-cb4f-43f1-9bba-2e1827541d06
ORCID for Thomas Andritsch: ORCID iD orcid.org/0000-0002-3462-022X

Catalogue record

Date deposited: 02 Nov 2018 17:30
Last modified: 14 Mar 2019 01:34

Export record

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 https://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.

×