A new report aims at improving the weathering performance of an epoxy coating via surface treatment of zinc oxide (ZnO) nanoparticles with different silane coupling agents.
The main target of treatment was to suppress the photocatalytic activity of ZnO nanoparticles during weathering exposure. Amino- and glycidoxy-functional silane coupling agents (at three concentration levels) were used for this purpose. The positive influence of such treatment on the weathering performance was proved using different (aesthetic, mechanical, chemical, and topological) techniques. It was also revealed that modification with the stoichiometric or higher (1.5 stoichiometric) level of silane coupling agents was more effective in such improvement.
The study was published in Progress in Organic Coatings, Volume 147, October 2020.
