Described herein are liquid crystalline elastomer compositions comprising aromatic epoxy units crosslinked with alkylene diacid units having alkylene segments containing at least one methylene unit, and/or aromatic epoxy units crosslinked with polyphenolic units, wherein the aromatic epoxy units and alkylene diacid units and/or polyphenolic units are in a molar ratio that results in the liquid crystalline elastomer composition exhibiting a glass transition temperature (Tg) and a thermal stability of the liquid crystalline phase (Tlc) that make them particularly suitable as shape memory materials and for use in methods of additive manufacturing. Methods for producing these compositions and their use in additive manufacturing processes are also described.
本文描述的液态结晶弹性体组合物由芳香族环氧单元与具有至少含有一个亚甲基单元的亚烷基段的亚烷基二酸单元交联和/或芳香族环氧单元与多
酚单元交联组成、其中芳香族环氧单元与亚烷基二酸单元和/或多
酚单元的摩尔比使液晶弹性体组合物显示出
玻璃化转变温度(Tg)和液晶相的热稳定性(Tlc),使其特别适合用作形状记忆材料和添加制造方法。此外,还介绍了生产这些组合物的方法及其在快速成型制造工艺中的应用。