The Impact of Nanoparticles and Aging on AC Dielectric Strength of Nomex Polymeric Composite: Weibull Distribution Based Analysis

Authors

  • Soumyadeep Maity Department of Electrical Engineering, National Institute of Technology, Mizoram, India
  • Sandipan Kumar Paul Department of Electrical Engineering, Jadavpur University, Kolkata, India
  • Biswajit Chakraborty Department of Electrical Engineering, Jadavpur University, Kolkata, India
  • Subhajit Maur Department of Electrical Engineering, Ramakrishna Mahato Government Engineering College, India
  • Arpan Kumar Pradhan Department of Electrical Engineering, Jadavpur University, Kolkata, India
  • Sovan Dalai Department of Electrical Engineering, Jadavpur University, Kolkata, India
  • Biswendu Chatterjee Department of Electrical Engineering, Jadavpur University, Kolkata, India
  • Saibal Chatterjee Department of Electrical Engineering, National Institute of Technology, Mizoram, India
Volume: 15 | Issue: 5 | Pages: 26389-26395 | October 2025 | https://doi.org/10.48084/etasr.12584

Received: 5 June 2025 | Revised: 2 July 2025 | Accepted: 7 July 2025 | Online: 28 July 2025


Corresponding author: Soumyadeep Maity

Abstract

This research investigated the influence of insulating (Al2O3), semiconducting (TiO2), and conducting (Fe3O4) Nanoparticles (NPs) on the breakdown strength of Nomex-based polymeric Nanocomposites (NCs). Seven samples were fabricated and thermally aged at 145 °C for 600 h to simulate accelerated degradation. Fourier Transform Infrared Spectroscopy (FTIR) was conducted to unaged, 300 h, and 600 h aging durations to examine the chemical alteration and understand the NP-induced resistance of meta-aramid polymeric chains against the thermal aging. The AC Breakdown Voltage (ACBDV) was measured every 100 h of aging, and the results were analyzed using the Weibull distribution to extract the scale parameters, shape parameters, and p-values. Cumulative breakdown probabilities at 1%, 10%, and 50% risk levels were evaluated to assess the impact of different NPs on the breakdown mechanism. After 600 h of aging, the incorporation of 1 wt% Al2O3 improved the BDV of pristine Nomex by 28.2%. At a 50% risk probability, BDV enhancements of 63.16% (Al2O3), 48.89% (TiO2), and 42.39% (Fe3O4) were achieved, demonstrating the superior performance of NP-reinforced Nomex insulation under thermal stress..

Keywords:

FTIR, nanocomposite, Nomex polymer, Weibull distribution, dry-type insulation

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[1]
S. Maity, “The Impact of Nanoparticles and Aging on AC Dielectric Strength of Nomex Polymeric Composite: Weibull Distribution Based Analysis”, Eng. Technol. Appl. Sci. Res., vol. 15, no. 5, pp. 26389–26395, Oct. 2025.

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Copyright (c) 2025 Soumyadeep Maity, Sandipan Kumar Paul, Biswajit Chakraborty, Subhajit Maur, Arpan Kumar Pradhan, Sovan Dalai, Biswendu Chatterjee, Saibal Chatterjee

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