Shape memory polymer with high transition temperature (T_r) is highly demanded in many fields. A cyanate ester (CE) based shape memory polymer with tunable T_r and excellent mechanical property was prepared by using CE, carboxy-terminated liquid nitrile rubber (CTBN) and epoxy resin (E51 or GE36) in this work. The rheological behavior and fourier transformation infrared spectrogram results indicate the addition of CTBN containing of carboxylate could accelerate the triazine forming and reduce the curing temperature. Adding CTBN and epoxy resin to CE resulted in the formed network with reduced triazine density that the toughness was significantly improved, the elongation at break can reach up to 40%. The T_r, mechanically property could be tuned in a larger range by adjusting the ratio between CE, CTBN and epoxy resin. The shape memory cyanate ester (SMCE) presented an excellent shape memory effect even a triple shape memory effect. This work provides a promise shape memory material for broad applications.

许多领域都非常需要具有高转变温度 (T _r ) 的形状记忆聚合物。在这项工作中，通过使用 CE、端羧基液态丁腈橡胶 (CTBN) 和环氧树脂 (E51 或 GE36) 制备了一种具有可调 T _r和优异机械性能的氰酸酯 (CE) 基形状记忆聚合物。流变行为和傅里叶变换红外光谱结果表明，加入含羧酸盐的CTBN可以加速三嗪的形成并降低固化温度。在CE中加入CTBN和环氧树脂，形成的网络中三嗪密度降低，韧性显着提高，断裂伸长率可达40%。经t _[R, 通过调整 CE、CTBN 和环氧树脂之间的比例，可以在更大的范围内调整机械性能。形状记忆氰酸酯（SMCE）呈现出优异的形状记忆效应，甚至是三重形状记忆效应。这项工作为广泛的应用提供了一种有希望的形状记忆材料。