1 Electrical properties of polymer blend composites based on silicone rubber/EPDM/clay hybrid for high voltage insulators https://jourcc.com/index.php/jourcc/article/view/jcc313 10.52547/jcc.3.1.3 20.1001.1.26765837.2021.3.6.3.6 1 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. 18 24 Leila Bazli Iran Polymer and Petrochemical Institute Iran leilabazli64@gmail.com Sara Eskandarinezhad Yazd University Iran info@jourcc.com Naresh Kakur Indian Institute of Technology Madras India info@jourcc.com Velmurugan Ramachandran Indian Institute of Technology Madras India info@jourcc.com Alejandro Bacigalupe National Institute of Industrial Technology (INTI) Argentina info@jourcc.com Marcela Mansilla National Scientific and Technical Research Council (CONICET) Argentina info@jourcc.com Mariano Escobar National Institute of Industrial Technology (INTI) Argentina info@jourcc.com EPDM Silicone rubber Clay Nanocomposite Dielectric properties Article3.pdf [1] D. Tsalagkas, Z. Börcsök, Z. 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