新型高耐久染料系聚乙烯醇偏光膜的性能研究  

Research on the properties of new type high-durability dye-type polyvinyl alcohol polarizer

作　　者：周文贤 李铭全 ZHOU Wenxian;LI Mingquan(WINDA Opto‐Electronics Co,Ltd,Foshan 528136,China)

机构地区：[1]佛山纬达光电材料股份有限公司,广东佛山528136

出　　处：《中国塑料》2022年第4期53-59,共7页China Plastics

基　　金：佛山市科技创新项目(FS0AA-KJ419-4404-0102)。

摘　　要：将新型染料系偏光膜与碘系偏光膜进行系统性对比分析,采用分光光度计测试其透过率、偏光度、色相等光学指标,并进行高温高湿、高温、氙灯紫外老化等试验,分析测试前后的色相变化。结果表明,新型高耐久染料系偏光膜在透过率为39%时,偏光度为99.7%,较传统的染料系偏光膜有明显的提升;将偏光片放置于仪表盘内进行氙灯紫外老化测试,新型高耐久染料系偏光膜的色相变化(ΔE_(s))为3.48,仅为深浅变化;碘系偏光膜的ΔE_(s)为19.63,颜色明显变化成棕色;高温高湿85℃/85%/1 000 h耐候测试后,新型染料系偏光膜的偏光度仍为99%,碘系偏光膜已退偏完全失效;新型染料系偏光膜具有优异的高温耐候性能、耐氙灯紫外老化性能、高温高湿耐候性能,满足105℃/1 000 h及85℃/85%/1 000 h耐候性能,适用于电表、车载等领域中。The new dye-type polarizer and the iodine-type polarizer were systematically compared.The optical parameters of transmittance,polarization efficiency,hue and hue changes were analyzed after moisture test,high temperature test,xenon lamp UV aging test by using a spectrophotometer.The new high-durability dye-type polarizer was polarization efficiency of 99.7% at transmittance 39%.Compared with the traditional dye-type polarizer,there was a significant improvement.When the polarizers were placed in the instrument panel and executed the xenon lamp UV aging test.The hue change ΔE_(s) of the new high-durability dye-type polarizers is 3.48,and the hue change ΔE_(s) of the iodine-type polarizer was 19.63,which was obviously reddish brown.moisture resistance test at 85℃/85%/1 000 h,the polarization efficiency of the new dye-type polarizers was still 99%,and the iodine-type polarizer had completely depolarized and failed.The experimental results show that the new dye-type polarizing film has superior high temperature weather resistance,xenon lamp ultraviolet aging resistance,moisture resistance than iodine-based polarizing film,and meets the weather resistance of 105℃/1 000 h and 85℃/85%/1 000 h.It is applicable to use at electric meters,automotive and other fields.

关 键 词：染料系偏光膜 碘系偏光膜 高温耐候性能 高温高湿耐候性能 氙灯老化测试 

分 类 号：TQ325[化学工程—合成树脂塑料工业]