Unveiling the Future of Insulator Coatings: Unmatched Corrosion Resistance and Self-Healing Properties of PFPE Lubricating Oil-Infused Hydrophobized CeO 2 Surfaces

Simpy Sanyal, Xinyi Fan, Suresh Kumar Dhungel, Duy Phong Pham () and Junsin Yi ()
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Simpy Sanyal: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
Xinyi Fan: Interdisciplinary Program in Photovoltaic System Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
Suresh Kumar Dhungel: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
Duy Phong Pham: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
Junsin Yi: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea

Energies, 2023, vol. 16, issue 14, 1-11

Abstract: Corrosion accounts for 52% of the recorded breakdown of insulators utilized in transmission lines, which may interfere with the reliability of power utilities. The CeO 2 conversion coating, CeO 2 -ethylene propylene diene monomer, EPDM composite coating, and Perfluoropolyether PFPE lubricating oil-infused hydrophobized CeO 2 composite surfaces were developed on the insulator surface to address these challenges. The properties of these three kinds of structures are compared based on the persistence of coating over insulators installed in a highly contaminated environment. PFPE lubricating oil-infused hydrophobized CeO 2 composite surfaces show excellent performance over other approaches. A lubricating oil-infused hydrophobized CeO 2 composite of thickness 35.4 µm exhibits contact angles 60°, 85°, and 160°, and contact angle hysteresis of 12°, 10°, and 4°, respectively, after accelerated thermal aging. The proposed approach presents self-healing and corrosion resistance (corrosion rate 0.3 × 10 −3 mm/Y, I corr 1.2 × 10 −7 ), post-accelerated thermal aging. The research outcome is expected to pave the way for incredibly robust insulator coatings.

Keywords: surface modification; functional composite; high voltage insulators (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: 2023
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