Electrical properties of polymer blend composites based on Silicone rubber/EPDM/clay for high voltage insulators

  • Leila Bazli Rubber Group, Iran Polymer & Petrochemical Institute, Nano and Smart Polymers Center of Excellence, Tehran-Karaj Hwy, Iran (leilabazli64@gmail.com) https://orcid.org/0000-0001-7201-9884
  • Sara Eskandarinezhad Department of Mining and Metallurgy, Yazd University, Yazd, Iran
  • Naresh Kakur Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India
  • Velmurugan Ramachandran Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai, India
  • Alejandro Bacigalupe Center of Advanced Materials, National Institute of Industrial Technology (INTI), Buenos Aires, Argentina
  • Marcela Mansilla National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
  • Mariano Escobar Center of Advanced Materials, National Institute of Industrial Technology (INTI), Buenos Aires, Argentina
Keywords: EPDM, Silicone rubber, Clay, Nanocomposite, Dielectric properties

Abstract

Silicone rubber (SR) and ethylene-propylene-diene monomer (EPDM) are widely-used polymers as housing for high voltage insulators. In this work, SR/EPDM/clay nanocomposites were obtained by two-roll mill mixing for outdoor polymeric insulators. Morphology, dielectric properties, dielectric breakdown strength (DBS), and surface and volume resistivity of different weight contents of nanoclay (Cloisite 15A) incorporated in SR, EPDM, and SR/EPDM hybrid nanocomposites were characterized. In addition, the distribution of breakdown voltages was fit to the distribution of Weibull and estimated the scale and shape parameters. The polar groups of the clay particles enhanced the polarization capability of the nanocomposites. Moreover, DBS results showed an enhancement of the dielectric strength proportional to clay content. Finally, the surface and volume resistance of all nanocomposites decreases but maintains very high electrical resistance. The experimental data presented in this study will be useful for designing and manufacturing the outdoor insulators.

Graphical Abstract
Published
2021-03-28
How to Cite
Bazli, L., Eskandarinezhad, S., Kakur, N., Ramachandran, V., Bacigalupe, A., Mansilla, M., & Escobar, M. (2021). Electrical properties of polymer blend composites based on Silicone rubber/EPDM/clay for high voltage insulators . Journal of Composites and Compounds, 3(6), 18-24. https://doi.org/10.52547/jcc.3.1.3
Section
Articles