| Title |
AC Electrical and Mechanical Properties of Epoxy-Nano-Microsilica Mixed Composites for Eco-Friendly GIS Spacer |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.9.1181 |
| Keywords |
GIS spacer ; Epoxy nano composites ; Epoxy/Nano/Micro mixed composites ; Electrical breakdown strength ; Mechanical tensile strength |
| Abstract |
In order to develop new insulating materials for GIS Spacer using environmentally friendly insulating gas, three kinds of dispersed liquid nano composites of solid epoxy /nano layered silicate filled material were prepared. And the epoxy/nano/micro silica composite was prepared by mixing epoxy/nano 3 phr dispersion/4 kinds of filler contents(40,50 ,60, 70wt%). The electrical insulation breakdown strengths of the nano and nano/micro mixed composites were evaluated by using 8 kinds of samples including the original epoxy. The mechanical tensile strength of the epoxy / nano / micro silica composite were evaluated, also. The TEM was measured to evaluate the internal structure of nano/micro composites. As a result, it was confirmed that the layered silicate nano particles was exfoliated through the process of inserting epoxy resin between silicate layers and the layers. In addition, dispersion of nano / micro silica resulted in improvement of electrical insulation breakdown strength with increase of filling amount of dense tissue with nanoparticles inserted between microparticles. In addition, the tensile strength showed a similar tendency, and as the content of microsilica filler increased, the mechanical improvement was further increased |