PET光学膜紫外光固化硬涂层的制备

本文以改性聚氨酯丙烯酸酯为主体,制备了一种PET光学膜用透明硬涂层材料.讨论了光固化树脂、活性稀释剂、光引发剂等因素对PET光学膜加硬后的硬度、耐磨性、附着力等性能的影响,并从反应机理方面分析探讨了实验结果.经测试:实验制备的涂层硬度5H,附着力100%,经RCA纸带耐磨擦试(500g,1000cycles),PET膜可见光透过率无损失,同时具有低表面张力,出色的柔韧性和良好的耐化学品性.

The Preparation of UV Curable Hard Coatings on PET

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.