Abstract Fabricating biobased reconfigurable high performance epoxy resins for self-deployable 3D smart structures is an interesting issue with great challenge. Herein, a biobased trifunctional epoxy monomer (tris(2-methoxy-4-(oxiran-2-ylmethyl)phenyl) phosphate, TMOPP) was derived from eugenol and cured by 4,4′-dithiodianiline (DTDA) to form the dynamic cross-linked TMOPP/DTDA resin. The integrated properties including thermal, mechanical and flame retardancy of TMOPP/DTDA resin are studied systemically. Compared with commercial epoxy resin (diglycidyl ether of bisphenol A (DGEBA)/DTDA), TMOPP/DTDA resin has higher glass transition temperature (217 °C) and tensile strength (95.2 MPa), while these properties are superior to those of biobased dynamic cross-linked epoxy resins reported in literatures. TMOPP/DTDA resin also shows excellent flame retardancy with UL-94 V-0 rating. The trifunctional aromatic structure of TMOPP and the compact cross-linked structure of TMOPP/DTDA resin play a principle role in the outstanding performances. At the same time, permanent shape reconfigurability and self-deployable ability of TMOPP/DTDA resin was exhibited by the transformation from planar film into a 3D “rocking chair” structure. These results provide a new method to produce biobased reconfigurable high performance epoxy resin in a simple and sustainable way, while expand the application of dynamic cross-linked epoxy resins in self-deployable 3D smart structures.

中文翻译：

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用于自部署智能 3D 结构的丁香酚衍生的可重构高性能环氧树脂

摘要 制备用于自部署 3D 智能结构的生物基可重构高性能环氧树脂是一个有趣的问题，但具有很大的挑战。在此，生物基三官能环氧单体（磷酸三（2-甲氧基-4-（环氧乙烷-2-基甲基）苯基）磷酸酯，TMOPP）源自丁香酚并通过 4,4'-二硫二苯胺（DTDA）固化形成动态交叉连接的 TMOPP/DTDA 树脂。系统研究了TMOPP/DTDA树脂的热、机械、阻燃等综合性能。与商品环氧树脂（双酚 A 的二缩水甘油醚 (DGEBA)/DTDA）相比，TMOPP/DTDA 树脂具有更高的玻璃化转变温度（217°C）和拉伸强度（95.2 MPa），同时这些性能优于生物基动态文献报道的交联环氧树脂。TMOPP/DTDA 树脂还表现出优异的阻燃性，符合 UL-94 V-0 等级。TMOPP 的三官能芳香结构和 TMOPP/DTDA 树脂的紧密交联结构是其优异性能的主要因素。同时，TMOPP/DTDA树脂的永久形状重构性和自部署能力通过从平面薄膜向3D“摇椅”结构的转变而表现出来。这些结果提供了一种以简单且可持续的方式生产生物基可重构高性能环氧树脂的新方法，同时扩展了动态交联环氧树脂在自部署 3D 智能结构中的应用。同时，TMOPP/DTDA树脂的永久形状重构性和自部署能力通过从平面薄膜向3D“摇椅”结构的转变而表现出来。这些结果提供了一种以简单且可持续的方式生产生物基可重构高性能环氧树脂的新方法，同时扩展了动态交联环氧树脂在自部署 3D 智能结构中的应用。同时，TMOPP/DTDA树脂的永久形状重构性和自部署能力通过从平面薄膜向3D“摇椅”结构的转变而表现出来。这些结果提供了一种以简单且可持续的方式生产生物基可重构高性能环氧树脂的新方法，同时扩展了动态交联环氧树脂在自部署 3D 智能结构中的应用。