二阶非线性光学互穿聚合物网络的合成与表征

Synthesis and Characterization of Interpenetrating Polymer Networks with Second Order Nonlinear Optical Properties

合成表征了由侧链带有羟基的聚甲基丙烯酸酯共聚物与二异氰酸酯（ＴＤＩ）热交联聚合物网络以及丙烯酰化环氧聚合物的热交联网络组成的新型二阶非线性光学（ＮＬＯ）互穿聚合物网络（ＩＰＮ）体系，此ＩＰＮ体系只有一个Ｔｇ，具有优良的光学品质．ＳＨＧ测量表明，ＩＰＮ的非线性光学稳定性较好，其二阶非线性光学系数ｄ３３值在８０℃下经４８０ｍｉｎ几乎未见衰减，ＩＰＮ体系的ｄ３３值也较高，达到１．８６×１０－７ｅｓｕ．

An novel interpenetrating polymer network consisting of thermally crosslinked polymethacrylate copolymer/TDI network and an NLO active epoxy based polymer network was synthesized and characterized The IPN samples with excellent optical quality showed only one T g,and its optical nonlinearity was rather stable after being heated at 80 ℃ for 480 min The second order nonlinear coefficient of 1 86×10 -7 esu for the IPN system was also obtained