Effect of Nanofiller at Low Frequency behavior of Dielectric Insulator
In electrical and communication systems, thermosets are considered one of the most important classes of dielectric materials. The addition of nanofiller to such materials enhances the electrical properties. Nano-filler additions to thermoset polymers restrict the chain movement in the frequency range of 10-1 to 102 Hz. The measurement in such cases is done using low frequency dielectric spectroscopy. This paper presents the low frequency behavior of nano-sized alumina filled epoxy composites in terms of capacitance and tan δ measurements. The results indicate that the tan δ, real and imaginary capacitance values decrease with increase in the frequency. A theoretical model for capacitance has been developed for comparison. It is found that a good correlation exists in respect of capacitance value measured with that of the theoretical ones.
Nanoalumina real and imaginary dielectric constant ε tan δ Dielectric Spectroscopy
M.G.Veena N.M.Renukappa S.Seetharamu P.Sampathkumaran
Department of Electronics and Communication, Sri Jayachamarajendra College of Engineering, Mysore-57 Materials Technology Division, Central Power Research Institute, Bengaluru-560080,India
国际会议
哈尔滨
英文
745-748
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）