Abstract
Mechanical properties of epoxy resin ROPOXID-501 additivated with polyethylene glycol-400 and chlorendic anhydride were studied. The behaviour of those mixtures exposed different times at UV radiation was also investigated. The added chlorendic anhydride enhances the strain at the break, the hardness and elastic energy and improves the stability at UV radiation. Keywords: epoxy resin, mechanical properties, UV radiation, additives