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Effects of nanoparticle and stoichiometry on properties of an epoxy system

Effects of nanoparticle and stoichiometry on properties of an epoxy system
Effects of nanoparticle and stoichiometry on properties of an epoxy system
Epoxy-based systems are used widely as dielectrics in electrical applications, especially under high temperature conditions. The chosen stoichiometry is important in determining the nature of the network that forms and hence the physical properties of the final system; a stoichiometric formulation with the optimal chemical balance between reactants will introduce good performances. However, addition of nanoparticles with large interfacial areas into epoxy systems may introduce additional chemical reactions between moieties on nanoparticle surfaces and reactants which may lead to chemical unbalance, and thus deteriorate the performance of the final nanocomposite system. This study set out to investigate the effects of stoichiometry and the introduction of nano-silica (Nanopox) on the thermal and electrical properties of an epoxy system, based on a diglycidyl ether of bisphenol-A (DGEBA) type resin, which was cured using an anhydride-based hardener and coupled with a tertiary amine accelerator. The properties considered include the glass transition temperature (Tg), electric breakdown and dielectric response. Based on investigations of the effects of fillers and stoichiometry, adjustments to the ratio of resin to hardener to accelerator have been conducted in an effort to achieve an appropriate compensation for the system.
Nguyen, Van
56e06d13-02c8-4b86-9343-e19a8f2a37ef
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Krivda, Andrej
89ec5ea3-3beb-429e-9d01-a6e6e1ba11a7
Nguyen, Van
56e06d13-02c8-4b86-9343-e19a8f2a37ef
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Krivda, Andrej
89ec5ea3-3beb-429e-9d01-a6e6e1ba11a7

Nguyen, Van, Vaughan, Alun, Lewin, Paul and Krivda, Andrej (2011) Effects of nanoparticle and stoichiometry on properties of an epoxy system. Dielectrics 2011, The University of Kent, Canterbury, United Kingdom. 12 - 14 Apr 2011.

Record type: Conference or Workshop Item (Poster)

Abstract

Epoxy-based systems are used widely as dielectrics in electrical applications, especially under high temperature conditions. The chosen stoichiometry is important in determining the nature of the network that forms and hence the physical properties of the final system; a stoichiometric formulation with the optimal chemical balance between reactants will introduce good performances. However, addition of nanoparticles with large interfacial areas into epoxy systems may introduce additional chemical reactions between moieties on nanoparticle surfaces and reactants which may lead to chemical unbalance, and thus deteriorate the performance of the final nanocomposite system. This study set out to investigate the effects of stoichiometry and the introduction of nano-silica (Nanopox) on the thermal and electrical properties of an epoxy system, based on a diglycidyl ether of bisphenol-A (DGEBA) type resin, which was cured using an anhydride-based hardener and coupled with a tertiary amine accelerator. The properties considered include the glass transition temperature (Tg), electric breakdown and dielectric response. Based on investigations of the effects of fillers and stoichiometry, adjustments to the ratio of resin to hardener to accelerator have been conducted in an effort to achieve an appropriate compensation for the system.

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D2011Van.ppt - Other
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More information

Published date: 13 April 2011
Additional Information: Event Dates: 13 - 15 April 2011
Venue - Dates: Dielectrics 2011, The University of Kent, Canterbury, United Kingdom, 2011-04-12 - 2011-04-14
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272188
URI: http://eprints.soton.ac.uk/id/eprint/272188
PURE UUID: 5ac61864-1893-4351-a73c-a3a675774ad0
ORCID for Alun Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

Catalogue record

Date deposited: 15 Apr 2011 11:13
Last modified: 21 Nov 2021 02:49

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Contributors

Author: Van Nguyen
Author: Alun Vaughan ORCID iD
Author: Paul Lewin
Author: Andrej Krivda

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