Impact of particle thermal treatment on dielectric properties of core-shell filled epoxy nano-composites
Impact of particle thermal treatment on dielectric properties of core-shell filled epoxy nano-composites
This paper presents the effect of Silica-Titania (SiO2@TiO2) core-shell nano-particles added into amine-cured epoxy composites, under three different particle treatment conditions: untreated, calcined at 250 ∘C and 450 ∘C , on the dielectric and structural properties of the bulk composite. Characterization was conducted using a range of methods Transmission Electron Microscopy (TEM), Fourier Transform Infra-Red Spectroscopy (FTIR), Raman Spectroscopy, Differential Scanning Calorimetry (DSC) and Broadband Dielectric Spectroscopy (BDS). TEM confirmed the synthesis of the core-shell architecture with denser shells at higher calcination temperatures. Raman spectroscopy showed an increase in the Ti-O-Ti network formation and orderliness with elevated temperature treatment. Incorporating untreated filler into epoxy reduces the bulk real permittivity, while the inclusion of calcined fillers leads to an increase. An additional ω relaxation was observed in imaginary permittivity spectra of nano-composites pointing towards altered molecular dynamics within the epoxy due to nano-particle addition. These findings highlight the role of core-shell nano-particles in modifying the dielectric properties of epoxy composites, whilst differentiating them from conventional nano-particles.
core-shell nano-particles, dielectric relaxations, epoxy nano-composites
Chaudhary, S.
25f0d213-03ef-4909-8cfc-29a8498aa28f
Vryonis, O.
4affde05-88f2-436f-b036-dceedf31ea9c
Andritsch, T.
8681e640-e584-424e-a1f1-0d8b713de01c
12 August 2024
Chaudhary, S.
25f0d213-03ef-4909-8cfc-29a8498aa28f
Vryonis, O.
4affde05-88f2-436f-b036-dceedf31ea9c
Andritsch, T.
8681e640-e584-424e-a1f1-0d8b713de01c
Chaudhary, S., Vryonis, O. and Andritsch, T.
(2024)
Impact of particle thermal treatment on dielectric properties of core-shell filled epoxy nano-composites.
In 2024 IEEE 5th International Conference on Dielectrics (ICD).
IEEE.
4 pp
.
(doi:10.1109/ICD59037.2024.10613284).
Record type:
Conference or Workshop Item
(Paper)
Abstract
This paper presents the effect of Silica-Titania (SiO2@TiO2) core-shell nano-particles added into amine-cured epoxy composites, under three different particle treatment conditions: untreated, calcined at 250 ∘C and 450 ∘C , on the dielectric and structural properties of the bulk composite. Characterization was conducted using a range of methods Transmission Electron Microscopy (TEM), Fourier Transform Infra-Red Spectroscopy (FTIR), Raman Spectroscopy, Differential Scanning Calorimetry (DSC) and Broadband Dielectric Spectroscopy (BDS). TEM confirmed the synthesis of the core-shell architecture with denser shells at higher calcination temperatures. Raman spectroscopy showed an increase in the Ti-O-Ti network formation and orderliness with elevated temperature treatment. Incorporating untreated filler into epoxy reduces the bulk real permittivity, while the inclusion of calcined fillers leads to an increase. An additional ω relaxation was observed in imaginary permittivity spectra of nano-composites pointing towards altered molecular dynamics within the epoxy due to nano-particle addition. These findings highlight the role of core-shell nano-particles in modifying the dielectric properties of epoxy composites, whilst differentiating them from conventional nano-particles.
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Published date: 12 August 2024
Venue - Dates:
2024 IEEE 5th International Conference on Dielectrics (ICD), , Toulouse, France, 2024-06-30 - 2024-07-04
Keywords:
core-shell nano-particles, dielectric relaxations, epoxy nano-composites
Identifiers
Local EPrints ID: 493539
URI: http://eprints.soton.ac.uk/id/eprint/493539
PURE UUID: 2eb08259-5c9c-4c01-9a4e-50905c231977
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Date deposited: 05 Sep 2024 17:09
Last modified: 12 Oct 2024 02:52
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Contributors
Author:
S. Chaudhary
Author:
O. Vryonis
Author:
T. Andritsch
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