Citation

Mohd Halim, Nurhaliana Shazwani and Romzei, Norshazlina and Lau, Kok Tee and Yong, Kelly Tau Len and Azlan, Umar Al Amani and You, Ah Heng (2025) Properties of Epoxy Coatings Electrodeposited from Cationic Epoxy Suspensions Prepared by Different Secondary Amine's Volumes. Materials Science Forum, 1164. pp. 75-83. ISSN 1662-9752

Full text not available from this repository.

Abstract

Epoxy resins are widely recognised as the most commonly used polymers, playing a crucial role in both industrial and domestic applications; however, the effect of secondary amine volume on the electrophoretic deposition (EPD) performance of epoxy resin remains underexplored. This study investigates the influence of varying volumes of N-methylethanolamine (MEA) during the synthesis of cationic epoxy on the chemical composition, thickness, surface morphology, and dielectric properties of electrodeposited epoxy coatings at a voltage of 60 V. Cationic diglycidyl ether of bisphenol A (DGEBA) epoxy resin was formulated with 0.5, 1.0, and 1.5 ml MEA, and then deposited onto galvanised substrates via EPD. Increasing the MEA volume from 0.5 ml to 1.5 ml during the formulation of cationic DGEBA resulted in a 50.6% reduction in deposited coating thickness (from 46.6 µm to 23.0 µm) and a 98% decrease in the corresponding dielectric constant (from 102 to 1.98 at a frequency of 1.27 Hz). These variations were confirmed by Fourier-transform infrared spectroscopy, electrochemical impedance spectroscopy, and field-emission scanning electron microscopy, which indicated changes in chemical bonding and surface uniformity. The findings highlight the critical role of MEA volume in determining the performance of electrodeposited epoxy coatings and offer guidance for optimising EPD formulations for improved insulation and structural stability.

Item Type:	Article
Uncontrolled Keywords:	Cationisation, DGEBA, Dielectric Property, Electrophoretic Deposition, Epoxy Resin, Functionalization, Secondary Amine
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Engineering and Technology (FET)
Depositing User:	Nurin Syazwani Azmi
Date Deposited:	10 Dec 2025 07:24
Last Modified:	10 Dec 2025 07:28
URII:	http://shdl.mmu.edu.my/id/eprint/15036

Downloads

Edit (login required)