合成了含偶氮苯并噻吩（ＢＴ）发色团的聚氨酯／环氧树脂互穿网络聚合物（ＩＰＮ），其中聚氨酯网络由（丙烯酸β羟丙酯ＢＴ２甲基丙烯酸酯）共聚物与苯酚封闭的双端异氰酸酯的ＢＴ１反应形成，而环氧树脂网络由含环氧基的ＢＴ与含ＢＴ的苯二胺反应形成．同时实施这二种反应即形成ＩＰＮ．ＩＰＮ经红外光谱、凝胶含量测定及ＤＳＣ等表征．其薄膜经１６０℃、８５ｋＶ电晕极化，由可见光谱测量及一维刚性取向气体模型计算得到宏观二阶非线性光学极化系数χ（２）为２１８×１０－７ｅ．ｓ．ｕ．，在１２０℃经２４０ｈ序参数几乎不变． Polyurethane / epoxy resin interpenetrating polymer network (IPN) containing azobenzothiophene (BT) chromophore was synthesized, in which the polyurethane network consisted of (β-hydroxypropyl acrylateBT2methacrylate) And phenol blocked double-ended isocyanate BT  1 reaction formed, and the epoxy resin network formed by the reaction of BT with epoxy-containing BT and BT-containing phenylenediamine. At the same time the implementation of these two reactions that form IPN. IPN by infrared spectroscopy, gel content determination and DSC characterization. The macroscopic second-order nonlinear optical polarizability χ (2) was calculated to be 2.18 × 10-7e by corona polarization at 160 ℃ and 85kV. The visible-spectrum measurement and one-dimensional rigid orientation gas model were used to calculate the polarization. s. u. , At 120 ℃ by 240h sequence parameters almost unchanged.