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access icon openaccess Effects of interaction between filler and resin on the glass transition and dielectric properties of epoxy resin nanocomposites

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 16/12/2018, Accepted 01/04/2019, Revised 25/03/2019, Published 03/04/2019

Polymer nanocomposites are known to exhibit superior insulation performance. As a reason for this, interactions at the filler/polymer interfaces are widely believed. To obtain information on this, the glass transition temperature (T g), complex permittivity (ε*), and conductivity (σ) were measured in various epoxy resin nanocomposites. As a result, all the parameters (T g, ε*, and σ) decrease when the filler is MgO, whereas T g decreases and ε* and σ increase when the filler is TiO2. This fact clearly indicates that the filler exerts significant influences on various properties such as molecular motions in the host epoxy resin, and that these influences differ profoundly depending on the filler material.

Inspec keywords: titanium compounds; magnesium compounds; filled polymers; nanocomposites; resins; glass transition; electrical conductivity; permittivity

Other keywords: MgO; polymer nanocomposites; electrical conductivity; complex permittivity; filler material; TiO2; dielectric properties; filler-polymer interfaces; epoxy resin nanocomposites; host epoxy resin; insulation performance; glass transition temperature

Subjects: Electrical properties of composite materials (thin films, low-dimensional and nanoscale structures); Glass transitions; Dielectric permittivity

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