• Investigation of surface modifications in ethylene propylene diene monomer (EPDM) rubber due to tracking under a.c. and d.c. voltages

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      https://www.ias.ac.in/article/fulltext/boms/024/06/0587-0593

    • Keywords

       

      EPDM; tracking surface; degradation; acid rain; WAXD; DSC; TG-DTA

    • Abstract

       

      In the present work, tracking phenomena has been studied with the ethylene propylene diene monomer (EPDM) material under the a.c. and d.c. voltages, with ammonium chloride/acid rain solution as the contaminant. It is noticed that the tracking time depends on the conductivity and flow rate of the contaminant. The physico-chemical analyses viz. wide angle X-ray diffraction (WAXD), thermo-gravimetric differential thermal analysis (TG-DTA) and the differential scanning calorimetry (DSC) studies, were carried out and it was concluded that the tracking process is a surface degradation process. The tracking time is different for a.c. and d.c. voltages.

    • Author Affiliations

       

      R Sarathi1 Uma Maheswar Rao1

      1. Department of Electrical Engineering, Indian Institute of Technology, Chennai 600 036, India
    • Dates

       
  • Bulletin of Materials Science | News

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