Effect of applied voltage and epoxy suspension’s ageing time on sheet resistance of electrodeposited epoxy coatings

Mohd Halim, Nurhaliana Shazwani and Nik Ab Rashid, Nik Ahmad Luqmanul Hakim and Lau, Kok Tee and Haji Azlan, Umar Al-Amani (2025) Effect of applied voltage and epoxy suspension’s ageing time on sheet resistance of electrodeposited epoxy coatings. Malaysian Journal of Microscopy, 21 (1). pp. 124-134. ISSN 1823-7010

Text 0069402062025195121830.pdf Download (2MB)

Abstract

This study investigates the effect of applied voltages and epoxy suspension’s ageing time on the sheet resistance of electrodeposited epoxy coatings. Electrophoretic deposition (EPD) was employed as a coating technique due to its precise control over thickness and uniformity, making it suitable for electrical applications. Different applied voltages (i.e. 30, 40, and 60 V) and epoxy ageing times (1, 72, and 144 hours) were examined to understand their impact on the resulting coating's sheet resistance. Characterisations of the electrodeposited epoxy coatings were conductedusing the four-point probe method, weight gain measurement, field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy. The results indicate that both the applied voltage and epoxy suspension’s ageing time significantly affect coating thickness and sheet resistance, with highest sheet resistance value of 818.0 9 kΩ/sq.is achieved at an applied voltage of 60 V and an hour ageing time. Higher voltages initially increase sheet resistance, but this effect diminishes with longer ageing times. These findings are essential for industries utilising epoxy coatings, suggesting that adopting the optimal applied voltage and epoxy suspension’s storing time can enhance coating performance and reliability. The study provides insight into tailoring electrodeposited epoxy coatings for customised sheet resistance properties, contributing to advancements in materials for electrical application.

Item Type:	Article
Uncontrolled Keywords:	Electrophoretic deposition, Epoxy resin, Electrical conductivity, Grain boundaries,sheet resistance
Divisions:	Faculty Of Industrial And Manufacturing Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	13 Apr 2026 08:17
Last Modified:	13 Apr 2026 08:17
URI:	http://eprints.utem.edu.my/id/eprint/29671
Statistic Details:	View Download Statistic

Actions (login required)

View Item