两种二阶非线性光学聚氨酯的合成及其性能  

Synthesis and Properties of Two Kinds of Second-Order Nonlinear Optical Polyurethane

作　　者：刘志红[1] 谢洪泉[1] 林基淼 过俊石[1] 

机构地区：[1]华中理工大学化学系,武汉430074

出　　处：《功能材料》1998年第1期96-99,共4页Journal of Functional Materials

基　　金：武汉市晨光计划资助

摘　　要：合成了一种含双偶氮发色团侧基的线型聚氨酯及一种由分散红 - 19与已二异氰酸酯反应生成的线型聚氨酯 ,玻璃化温度依次为 154℃及 163℃。前者的二阶非线性光学系数高达 8× 10 -7esu,室温放置 3个月序参数仍保持初值的 98% ;后者的极化膜较分散红- 19与甲苯二异氰酸酯反应得到的聚氨酯的取向稳定性好 ,12 0℃放置 4 0 0多小时序参数保持The linear type polyurethane with azo azo chromophore side groups and from Dispersed Red 19 and 1,6 hexamethylene di isocyanate were synthesized.The former polyurethane posseses second order nonlinear optical (NLO) coefficient about 8×10 -7 esu and keeps 98% of it after 3 months at room temperature. The latter polyurethane showes more stable NLO property than that prepared from TDF and DR and keeps 95% NLO property even at 120℃ for more than 400h.

关 键 词：非线性光学 聚合物 聚氨酯 发色团 电晕极化 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]