Thermal Characteristics of DGEBA/ESBO/Microsilica Composites for Application to Heavy Electric Power Distribution Equipment

In order to apply bio-epoxy resin as an insulating material for eco-friendly high-voltage heavy electric equipment, petrochemical epoxy resin (bisphenol A type diglycidyl ether (DGEBA)) and epoxidized soybean oil (ESBO), which epoxidizes the double bonds of fatty acids, were used. Ten types of samples mixed based on stoichiometry were prepared. And to apply to heavy electric equipment for distribution, DGEBA:ESBO Mixture Contents Ratio (100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70, 20: 80, 10phr:90phr) and Micro Silica (M10_65wt%) were mixed to produce 10 types of epoxy/micro silica composites.<br/>The content ratio of bioepoxy that can be used in heavy electrical equipment and the thermal temperature characteristics of the mixture according to temperature changes were analyzed and reviewed through three evaluations, DSC, DMA, and TMA measurements. In general, the possibility was confirmed in the petrochemical epoxy DGEBA:ESBO/Micro silica_65wt% composite with a DGEBA:ESBO content ratio of 70phr:30phr.