Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3394011
Keywords
dielectric losses; electric breakdown; filled polymers; nanocomposites; nanofabrication; nanoparticles; titanium compounds
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Funding
- U.S. Department of Energy, Office of Electricity Delivery, and Energy Reliability, Advance Cables and Conductors [DE-AC05-00OR22725]
- Scientific User Facilities Division, Office of Basic Energy Sciences, and U.S. Department of Energy
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Physical properties of a nanodielectric composed of in situ synthesized titanium dioxide (TiO(2)) nanoparticles (< 5 nm in diameter) and a cryogenic resin are reported. The dielectric losses were reduced by a factor of 2 in the nanocomposite, indicating that the presence of small TiO(2) nanoparticles restricted the mobility of the polymer chains. Dielectric breakdown data of the nanodielectric was distributed over a narrower range than that of the unfilled resin. The nanodielectric had 1.56 times higher 1% breakdown probability than the resin, yielding 0.64 times thinner insulation thickness for the same voltage level, which is beneficial in high voltage engineering.
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