Abstract: An ultraviolet curable transparent hard coating material has been developed to improve the abrasion resistance of PET.Functionalized polyurethane acrylate was used for the preparation of the hard coatings by UV curable technique.Factors that influence the properties of the PET hard coating were investigated,which includes photosensitive resin,reactive diluents,photoinitiator and additives.The tested results showed that: The prepared coating hardness 5H,adhesion 100%,abrasion resistance tested with the RCA tapes (500 g,1000 cycles),the transmittance of PET film without loss,as well as low surface tension,excellent flexibility and good chemical resistance.

Key words: PET optical film, hard coating, abrasion resistant, UV curable