Effect of curing agent content on properties of zinc-rich epoxy primer nano-coating

Abstract

In this paper, properties of zinc-rich epoxy primer nano-coating affected by the curing agent content were researched, which is one of the heavy-duty anticorrosive coating system, including the viscosity, applying time, bonding strength, hardness and corrosion resistance. So as to optimize coating system, shorten process and increase benefits. Results indicated that the viscosity decreased, the applying time shortened, and the drying time curtailed with the dosage of curing agent increment. And the bonding strength and the micro hardness of the cured coating increased first and then decreased. Furthermore, the coating corrosion resistance could be reduced due to the excessive curing agent to some extent.