TSC properties of epoxy composites cured with acid-anhydride

Author

Wang, Jong-Bae ; Park, Geon-ho ; Jung, II-Hyung ; Shin, Cheol-Gi ; Lee, Joon-Ung

Author_Institution

Dept. of Electr. Eng., Kwangwoon Univ., Seoul, South Korea

fYear

1994

fDate

7-9 Sep 1994

Firstpage

552

Lastpage

557

Abstract

The TSC spectroscopy was applied to investigate an influence of structural change and interfacial state on the electrical properties of epoxy composites cured with acid-anhydride. A addition of over abundant hardener and inorganic filler separated a β peak near 10[°C] into two peaks of β₁(10°C) and β₂(20°C) and increased magnitude of TSC spectra between α and β peak, which would be closely related with the process of thermal oxidation and separation of hardener´s phenyl group according to an introduction of interfacial deformation, an expansion of free volume and a reduction of structural packing density. And the treatment of silane coupling agents on filler improved interfacial deformation to decrease the amplitude of TSC spectra

Keywords

composite insulating materials; composite material interfaces; dielectric relaxation; electrets; epoxy insulation; interface states; interface structure; oxidation; thermally stimulated currents; 10 C; 20 C; TSC spectroscopy; electrical properties; epoxy composites cured with acid-anhydride; free volume expansion; inorganic filler; interfacial deformation; interfacial state; phenyl group; silane coupling agents; structural change; structural packing density reduction; thermal oxidation; Curing; Epoxy resins; Oxidation; Performance evaluation; Polarization; Silicon compounds; Spectroscopy; Temperature dependence; Temperature distribution; Thermal expansion;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.514829

Filename

514829