Developing shape memory polymers (SMPs) with enough mechanical strength, good toughness and excellent processability(mild synthesis conditions) is still a challenge for researchers. Therefore, a series of rigid-flexible epoxy SMPs were prepared based on epoxy resin, trimethylolpropane tris(3-mercaptopropionate) (TMP), and N,N-diglycidyl-4-glycidyloxyaniline (TGE) through thiol-epoxy click-reaction. The effect of sulfide curing agent and modifier on the crosslink networks and main features (mechanical strength, toughness, and shape memory performance) of epoxy samples were investigated. Experimental results displayed temperature-dependent modulus and strength with two order of magnitude difference between room temperature and glass transition temperature (T_g). TGE showed great effect on the improvement of mechanical properties of the epoxy material, increasing from 724.2 MPa to 1637 MPa, nearly 220%. Moreover, shape-memory test revealed that prepared epoxy SMPs are capable to fulfil the recovery process within 2 mins as long as temperature elevated to or above T_g, with shape fixity ratio over 99 % and shape recovery ratio above 90 %.

开发具有足够的机械强度，良好的韧性和出色的加工性能（温和的合成条件）的形状记忆聚合物（SMP）仍然是研究人员面临的挑战。因此，基于巯基环氧树脂，三羟甲基丙烷三（3-巯基丙酸酯）（TMP）和N，N-二缩水甘油基-4-缩水甘油基氧基苯胺（TGE），通过硫醇-环氧点击反应制备了一系列刚柔结合的环氧SMP。研究了硫化剂和改性剂对环氧树脂样品的交联网络和主要特征（机械强度，韧性和形状记忆性能）的影响。实验结果显示了随温度变化的模量和强度，室温和玻璃化转变温度（T _g）。TGE对改善环氧材料的机械性能具有显着效果，从724.2 MPa增加到1637 MPa，接近220％。此外，形状记忆测试表明，只要温度升高到T _g或以上，制备的环氧SMP就能在2分钟内完成恢复过程，形状固定率超过99％，形状恢复率超过90％。