Effects of Micro-Eggshells Filler on Tracking and Erosion Resistance of Silicone Rubber Composites

Abstract:

This study investigates the effects of micron-sized eggshells filler on resistance to tracking and erosion of silicone rubber composite. Eggshells with particle size from 44 to 53 microns were filled into liquid room temperature vulcanizing (RTV) silicone rubber with 0, 5, 15, 25, and 30 part per hundred of rubber (phr). IEC-60587 inclined plane test (IPT) was employed to appraise the surface tracking resistance. Thermogravimetric analysis was conducted to evaluate its thermal stability. Experimental results revealed an improvement of tracking and erosion resistance due to an addition of eggshells particles. Furthermore, the thermal stability of the composites showed variation in the increasing amount of the filler. The filler indicated that higher thermal stability of eggshells influences the heat resistance of the matrix. An increase of the heat resistance resulted in the ability to slow down tracking growth and erosion in the discharge region.

• Periodical: Key Engineering Materials (Volume 846)
• Pages: 37-41
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.846.37
• Online since: June 2020
• Authors: Pattarabordee Khaigunha*, Tanakorn Wongwuttanasatian, Amnart Suksri
• Keywords: Calcium Carbonate, Discharge, Dry Band Arcing, Failure, Leakage Current, Thermal Stability, Thermogravimetric Analysis, Waste

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