PET基材上介质保护层对高反射银膜性能的影响

Effect of Dielectric Protective Layers on the Performance of High Reflective Silver Film on PET Substrates

为了解决纯银高反射膜耐候性不佳、附着力差的问题,在聚对苯二甲酸乙二醇酯(PET)基材上制备了Al_(2)o_(3)/Ag/CrN结构,通过多组对照试验评估保护层对反射银膜耐候性和力学性能的影响。结果表明:Al_(2)o_(3)前保护层显著提高了反射膜的耐腐蚀性能;CrN后保护层提高了膜层的附着力性能;综合耐候性、反射率、附着力等性能,PET/Al_(2)o_(3)/Ag/CrN膜层中Al_(2)o_(3)优选厚度为10 nm,CrN优选厚度为20 nm。

In order to solve the problem of poor weather resistance and adhesion of high reflective silver films,an Al_(2)o_(3)/Ag/CrN structure was prepared on the polyethylene terephthalate(PET)substrate.The effect of protective layer on the weather resistance and adhesion properties of reflective silver film were evaluated by multiple controlled trials.Results showed that the Al_(2)o_(3)pre-protective layer significantly improved the corrosion resistance of the reflective film,and the CrN post-protective layer improved the adhesion performance of the film layer.Considering the overall performance of weathering resistance,reflectivity and adhesion,the optimal thickness of the Al_(2)o_(3)layer and the CrN layer in PET/Al_(2)O_(3)/Ag/CrN structure were 10 nm and_(2)0 nm,respectively.