Investigation on Electrical and Thermal Performance of Glass Fiber Reinforced Epoxy–MgO Nanocomposites

Janjanam Naveen, Myneni Sukesh Babu, Ramanujam Sarathi, Ramachandran Velmurugan, Michael G. Danikas and Athanasios Karlis
Additional contact information
Janjanam Naveen: Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
Myneni Sukesh Babu: Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
Ramanujam Sarathi: Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
Ramachandran Velmurugan: Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai 600036, India
Michael G. Danikas: Department of Electrical and Computer Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Athanasios Karlis: Department of Electrical and Computer Engineering, Democritus University of Thrace, 67100 Xanthi, Greece

Energies, 2021, vol. 14, issue 23, 1-17

Abstract: Epoxy nanocomposites reinforced with glass fiber, have been prepared with various weight percentages (1, 3, and 5 wt.%) of MgO nanofillers to improve their electrical and thermal performance. An increase in MgO nanofiller content up to 3 wt.% tends to enhance surface discharge and corona inception voltages measured using fluorescence and UHF methods, under both AC and DC voltage profiles. Reduced initial surface potential along with increased decay rate is observed after inclusion of MgO nanoparticles. Before and after the polarity reversal phenomena, heterocharge formation is observed in the bulk of test specimens. In comparison with other test samples, the 3 wt.% sample had reflected lower electric field enhancement factor. After MgO filler was added to glass fiber reinforced polymer (GFRP) composites, the coefficient of thermal expansion (CTE) has reduced, with the 3 wt.% specimen having the lowest CTE value. TGA measurements revealed an improvement in thermal stability of the GFRP nanocomposites up on the inclusion of MgO nanofillers. Overall, the GFRP nanocomposite sample filled with 3 wt.% nano-MgO outperformed the other test samples in terms of electrical and thermal performance.

Keywords: epoxy nanocomposites; MgO; GFRP; CIV; polarity reversal; TGA; FTIR (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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