Dielectric properties of epoxy/Al2O3 nanocomposites depending on frequency and temperature

Author

Ahn, Joon Ho ; Park, Jae-Jun

Author_Institution

Hongik Sci. & Technol. Inst., Hongik Univ., Seoul

Volume

1

fYear

2006

fDate

22-25 Oct. 2006

Firstpage

674

Lastpage

675

Abstract

In this study, we investigated dielectric properties that fabricated samples with Al₂O₃ nanoparticles that have excellent thermal stability. And we examined equivalent circuit of nanocomposites through frequency response and could understand structure in Epoxy/Al₂O₃ from equivalent circuit. Also transition temperature was occurred by increasing temperature, investigated that changing permittivity due to phase transition. Al₂O₃ have excellent thermal stability, proper permittivity and Epoxy/Al₂O₃ nanocomposites expressed an equivalent circuit as two series and parallels RC circuit in this study. And we analyzed an equivalent circuit include bulk, grain, grain boundary in Epoxy/Al₂O₃ nanocomposites. As a results of this study, permittivity decreased by increasing frequency, and relaxation phenomenon occurred. Also we understand that epsiv" shows transition temperature about 110degC.

Keywords

equivalent circuits; frequency response; nanocomposites; nanoparticles; permittivity; thermal stability; Epoxy; dielectric properties; equivalent circuit; frequency response; nanocomposites; nanoparticles; permittivity; thermal stability; Circuit analysis; Circuit stability; Dielectrics; Equivalent circuits; Frequency response; Nanocomposites; Nanoparticles; Permittivity; Temperature; Thermal stability; Al2O3; Cole-Cole Plot; Dielectric Property; Equivalent Circuit; Nanocoposites;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE

Conference_Location

Gyeongju

Print_ISBN

978-1-4244-0540-4

Electronic_ISBN

978-1-4244-0541-1

Type

conf

DOI

10.1109/NMDC.2006.4388956

Filename

4388956