Dielectric performance of polymer nanocomposites synthesized by atmospheric-pressure plasma-treated silica nanoparticles

Yan, W., Phung, B. T., Han, Z. J., & Ostrikov, K. (2012) Dielectric performance of polymer nanocomposites synthesized by atmospheric-pressure plasma-treated silica nanoparticles. In Nanotechnology 2012 : Advanced Materials, CNTs, Particles, Films and Composites, Nano Science and Technology Institute, Santa Clara, CA, United States, pp. 539-542.

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In this study, atmospheric-pressure plasmas were applied to modify the surface of silane-coated silica nanoparticles. Subsequently nanocomposites were synthesized by incorporating plasma-treated nanoparticles into an epoxy resin matrix. Electrical testing showed that such novel dielectric materials obtained high partial discharge resistance, high dielectric breakdown strength, and enhanced endurance under highly stressed electric field. Through spectroscopic and microscopic analysis, we found surface groups of nanoparticles were activated and radicals were created after the plasma treatment. Moreover, a uniform dispersion of nanoparticles in nanocomposites was observed. It was expected that the improved dielectric performance of the nanocomposites can attribute to stronger chemical bonds formed between surface groups of plasma-treated nanoparticles and molecules in the matrix. This simple yet effective and environmentally friendly approach aims to synthesize the next generation of high-performance nanocomposite dielectric insulation materials for applications in high-voltage power systems.

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25 citations in Web of Science®
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ID Code: 73569
Item Type: Conference Paper
Refereed: No
Keywords: Atmospheric-pressure plasma, Dielectric breakdown, Nanocomposite, Partial discharge
ISSN: 9781466562745
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 09 Jul 2014 02:03
Last Modified: 21 Jun 2017 21:01

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