Graphene Oxide/Vinyl Ester Resin Nanocomposite: Effect of Graphene Oxide, Thermal Stability, and Modeling of the Curing Kinetics

V. Arabli, A. Aghili
National Iranian Oil Company,
Iran, Islamic Republic of

Keywords: Graphene Oxide; Epoxy Vinyl Ester Resin; Cure

Summary:

Graphene oxide (GO) was synthesized and nanocomposites were prepared using different contents of the GO and vinyl ester resin (VE). The onisothermal differential scanning calorimetry (DSC) was used to study the cure kinetics of VE and 0.3wt% GO/VE nanocomposite. Kissinger and Ozawa equations were used to determine the activation energy (Ea). The Ea values of the cured GO/VE nanocomposite showed a decrease with respect to the neat VE. It is concluded that GO has a catalytic effect in the cure reaction. The dynamic curing process was modeled to predict the degree of curing and curing rate of resin. Scanning electron microscopy (SEM) was studied to discern the surface features and dispersion of GO. The thermal stability of the cured VE and its nanocomposite was investigated with thermogravimetric analysis (TGA).