Abstract:

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.

Key words: dye?type polarizer, iodine?type polarizer, high temperature resistance, moisture resistance, xenon lamp aging test