Title :
Permittivity and loss tangent of copper filled epoxy
Author :
Frost, N.E. ; McGrath, P.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clarkson Univ., Potsdam, NY, USA
Abstract :
The influence of filler particle size and shape on the permittivity and loss tangent of an epoxy composite was investigated. Three types of copper filler were used: large sphere, small sphere, and small flake. The amount of filler was varied from 0 to 15 volume percent and the dielectric properties were investigated at 1 kHz. It was found that the samples with the small flake filler showed the highest permittivity and loss of the three materials for any given filler level. Comparisons were made with theoretical predictions using the Wagner formula and effective medium theory
Keywords :
cable insulation; composite insulating materials; copper; dielectric losses; epoxy insulation; filled polymers; particle size; permittivity; 1 kHz; Cu; Cu filled epoxy; Wagner formula; dielectric properties; effective medium theory; epoxy composite; filler particle shape; filler particle size; loss tangent; permittivity; Composite materials; Conducting materials; Copper; Dielectric materials; Heating; Numerical analysis; Permittivity; Powders; Shape; Testing;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564687
