High-voltage insulation organic-inorganic nanocomposites by plasma polymerization

Yan, Wei, Han, Zhao Jun, Phung, B. Toan, Faupel, Franz, & Ostrikov, Kostya (2014) High-voltage insulation organic-inorganic nanocomposites by plasma polymerization. Materials, 7(1), pp. 563-575.

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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.

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ID Code: 73499
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Dielectric constant, Electrical insulation, Organic-inorganic nanocomposites, Plasma polymerization
DOI: 10.3390/ma7010563
ISSN: 1996-1944
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 MDPIAG
Deposited On: 08 Jul 2014 04:29
Last Modified: 09 Jul 2014 04:11

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