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High-Voltage Insulation Organic-Inorganic Nanocomposites by Plasma Polymerization

School of Electrical Engineering and Telecommunications, The University of New South Wales, Kensington, NSW 2052, Australia
CSIRO Materials Science and Engineering, Lindfield, NSW 2070, Australia
Institute for Materials Science, Synthesis and Real Structure, Faculty of Engineering, Christian-Albrechts-University (CAU) Kiel, Kiel 24118, Germany
School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
Author to whom correspondence should be addressed.
Materials 2014, 7(1), 563-575;
Received: 13 December 2013 / Revised: 10 January 2014 / Accepted: 16 January 2014 / Published: 20 January 2014
(This article belongs to the Special Issue Nanocomposites of Polymers and Inorganic Particles 2013)
PDF [1030 KB, uploaded 20 January 2014]


In organic-inorganic nanocomposites, interfacial regions are primarily influenced by the dispersion uniformity of nanoparticles and the strength of interfacial bonds between the nanoparticles and the polymer matrix. The insulating performance of organic-inorganic dielectric nanocomposites is highly influenced by the characteristics of interfacial regions. In this study, we prepare polyethylene oxide (PEO)-like functional layers on silica nanoparticles through plasma polymerization. Epoxy resin/silica nanocomposites are subsequently synthesized with these plasma-polymerized nanoparticles. It is found that plasma at a low power (i.e., 10 W) can significantly increase the concentration of C–O bonds on the surface of silica nanoparticles. This plasma polymerized thin layer can not only improve the dispersion uniformity by increasing the hydrophilicity of the nanoparticles, but also provide anchoring sites to enable the formation of covalent bonds between the organic and inorganic phases. Furthermore, electrical tests reveal improved electrical treeing resistance and decreased dielectric constant of the synthesized nanocomposites, while the dielectric loss of the nanocomposites remains unchanged as compared to the pure epoxy resin. View Full-Text
Keywords: organic-inorganic nanocomposites; plasma polymerization; electrical insulation; dielectric constant organic-inorganic nanocomposites; plasma polymerization; electrical insulation; dielectric constant

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Yan, W.; Han, Z.J.; Phung, B.T.; Faupel, F.; Ostrikov, K. High-Voltage Insulation Organic-Inorganic Nanocomposites by Plasma Polymerization. Materials 2014, 7, 563-575.

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