Effect of Silicone-modified Microsilica Content on Electrical and Mechanical Properties of Cycloaliphatic Epoxy/Microsilica System

The effect of microsilica content modified with silicone-modified epoxy on electrical and mechanical propertiesof cycloaliphatic epoxy/microsilica system was investigated. The cycloaliphatic epoxy resin was diglycidyl1,2-cyclohexanedicarboxylate and curing agent was an anhydride. Surface of microsilica was modified with siliconemodifiedepoxy. Electrical breakdown strength, the most important property for electrical insulation materials wastested. Tensile and flexural tests were also performed using universal testing machine (UTM). The microcompositewith 60 wt% microsilica shows maximum values in electrical breakdown strength. KCI Citation Count: 2