Based on the results, the bisphenol-A epoxy systems show better wettability relative to the bisphenol-F epoxy system irrespective of the hardener. For both epoxies, the aromatic hardeners contribute to better wetting, except in the case of the bisphenol-A epoxy system at elevated temperatures. The presence of the phenyl rings in the aromatic hardener monomers and their preferential adsorption on the BN surface contribute to lower contact angles.