Open AccessEffect of Mixing Ratio of Spherical Silica on the Electrical Insulation Breakdown Strength in Epoxy Composites
Author(s) -
JaeJun Park
Publication year - 2013
Publication title -
transactions on electrical and electronic materials/transactions on electrical and electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.201
H-Index - 18
eISSN - 2092-7592
pISSN - 1229-7607
DOI - 10.4313/teem.2013.14.2.101
Subject(s) - materials science , composite material , epoxy , scanning electron microscope , mixing (physics) , dispersion (optics) , composite number , mixing ratio , optics , physics , atmospheric sciences , quantum mechanics , geology
The effect of the mixing ratio of spherical silica on the electrical insulation breakdown strength in an epoxy/silicacomposite was studied. Spherical silicas with two average particle sizes of 5 μm and 20 μm were mixed in differentmixing ratios, and their total filling content was fixed at 60 wt%. In order to observe the dispersion of the silicasand the interfacial morphology between silica and epoxy matrix, scanning electron microscopy (SEM) was used.The electrical insulation breakdown strength was estimated in sphere-sphere electrodes with different insulationthicknesses of 1, 2, and 3 mm. Electrical insulation breakdown strength decreased with increasing mixing ratio of 5/20μm and the thickness dependence of the breakdown strength was also observed