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Influence of water absorption on dielectric properties of epoxy SiO2 and BN nanocomposites

Influence of water absorption on dielectric properties of epoxy SiO2 and BN nanocomposites
Influence of water absorption on dielectric properties of epoxy SiO2 and BN nanocomposites
It is well known that epoxy resins would absorb water when left in ambient conditions. A number of hydrophilic nano-particles also absorb water, like nano-SiO2, because of their surface hydroxyl groups resulting from the manufacture process. The water uptake will affect dielectric properties of the nanocomposites. However there was conflict report on the amount of water uptake by the unfilled and nano-filled epoxy resin systems. In the present paper, the epoxy resin was filled with surface treated, as well as, untreated nano-SiO2 and nano-BN. The relative humidity is controlled by the desiccator (dry samples), de-ionized (100% RH) water and climate chamber. The dielectric properties will relate to the hydration of samples. Measurements of dielectric spectroscopy cover the range of frequency from 10-2-105 Hz. Dielectric spectroscopy also showed different capacitance and permittivity at low frequencies, as well as tanδ, which depend on the hydration and temperature. It was observed from the results that permittivity, capacitance and tanδ of pure epoxy were strongly affected by the water absorptions. All these results are used to analyse how different variables, like surface treatment, filler type and filler loading concentration, can influence the water absorption. It will allow us to extract the influence of water absorption on dielectric properties of epoxy nanocomposites.
9781467374989
Qiang, Dayuan
2a64f637-fc33-4722-ab29-4e8fd60895a1
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Qiang, Dayuan
2a64f637-fc33-4722-ab29-4e8fd60895a1
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c

Qiang, Dayuan, Chen, George and Andritsch, Thomas (2015) Influence of water absorption on dielectric properties of epoxy SiO2 and BN nanocomposites. IEEE Conference on Electrical Insulation and Dielectric Phenomena, United States. 18 - 20 Oct 2015. 4 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

It is well known that epoxy resins would absorb water when left in ambient conditions. A number of hydrophilic nano-particles also absorb water, like nano-SiO2, because of their surface hydroxyl groups resulting from the manufacture process. The water uptake will affect dielectric properties of the nanocomposites. However there was conflict report on the amount of water uptake by the unfilled and nano-filled epoxy resin systems. In the present paper, the epoxy resin was filled with surface treated, as well as, untreated nano-SiO2 and nano-BN. The relative humidity is controlled by the desiccator (dry samples), de-ionized (100% RH) water and climate chamber. The dielectric properties will relate to the hydration of samples. Measurements of dielectric spectroscopy cover the range of frequency from 10-2-105 Hz. Dielectric spectroscopy also showed different capacitance and permittivity at low frequencies, as well as tanδ, which depend on the hydration and temperature. It was observed from the results that permittivity, capacitance and tanδ of pure epoxy were strongly affected by the water absorptions. All these results are used to analyse how different variables, like surface treatment, filler type and filler loading concentration, can influence the water absorption. It will allow us to extract the influence of water absorption on dielectric properties of epoxy nanocomposites.

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CEIDP2015-000423.pdf - Accepted Manuscript
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More information

Published date: 18 October 2015
Venue - Dates: IEEE Conference on Electrical Insulation and Dielectric Phenomena, United States, 2015-10-18 - 2015-10-20
Organisations: EEE

Identifiers

Local EPrints ID: 383630
URI: http://eprints.soton.ac.uk/id/eprint/383630
ISBN: 9781467374989
PURE UUID: bc3bdd09-9c99-4265-bee3-b0bddcabe722
ORCID for Thomas Andritsch: ORCID iD orcid.org/0000-0002-3462-022X

Catalogue record

Date deposited: 30 Nov 2015 11:21
Last modified: 29 Oct 2019 01:37

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Contributors

Author: Dayuan Qiang
Author: George Chen
Author: Thomas Andritsch ORCID iD

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