Study on Dielectric Characteristics of Nano-Al2O3 Composite Polyimide Film

Author

Peihong, Zhang ; Lingyun, Gai ; Gang, Li ; Qingquan, Lei

Author_Institution

Coll. of Electr. & Electron. Eng., Harbin Univ. of Sci. & Technol.

fYear

2006

fDate

38869

Firstpage

759

Lastpage

762

Abstract

The dielectric characteristics of nano-Al2O3 composite polyimide film with Al2O3 content of 5%, 10%, 12.5%, 15% and 20% in weight ratio were measured, respectively. The permittivity, dissipation factor and TSC peak temperature increase with increasing of the inorganic content. A percolation threshold corresponding to the content between 12.5% and 15% was discovered. With increasing the Al2O3 content, breakdown strength decrease and conductivity increases. The active energy of composite films with different inorganic content, ranging from 0.58 to 0.89, was calculated by auto-separating technology.

Keywords

alumina; composite insulating materials; dielectric thin films; electric breakdown; electric strength; nanocomposites; permittivity; polymer films; thermally stimulated currents; TSC; autoseparating technology; breakdown strength; dielectric characteristics; dissipation factor; electrical conductivity; insulation materials; nanoalumina composite polyimide film; permittivity; thermally stimulated current; Dielectric measurements; Dielectrics and electrical insulation; Electric breakdown; Electric variables measurement; Frequency measurement; Permittivity measurement; Polyimides; Polymers; Temperature dependence; Thermal conductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and applications of Dielectric Materials, 2006. 8th International Conference on

Conference_Location

Bali, Indonesia

Print_ISBN

1-4244-0189-5

Electronic_ISBN

1-4244-0190-9

Type

conf

DOI

10.1109/ICPADM.2006.284289

Filename

4062778