This work outlines an interesting approach to bioepoxy resins from sustainable 2,5‐bis((oxiran‐2‐ylmethoxy)methyl)furan (BOF). The 3,3′‐diamino diphenyl‐sulfone (33DDS) and 4,4′‐diamino diphenyl‐sulfone (44DDS) are employed as hardeners. For comparison, petro‐based networks from diglycidyl ether of bisphenol A (DGEBA) are developed as well. The systematic analyses suggest that the BOF/DDS networks show higher crosslink densities and mechanical properties than DGEBA/DDS thermosets. Remarkably, an attractive multilayer tubular microstructure is fabricated in the BOF/44DDS thermosets, and it greatly enhances the mechanical performance. Apart from that, BOF/DDS composites exhibit excellent flame retardancy. Especially, for BOF/44DDS, the self‐extinguishment happens in 7 s. The fire retardant mechanism confirms that a low heat release rate and heat release capacity as well as a compact char layer occur in the pyrolysis of BOF/DDS. Thus, the BOF/DDS exhibits superior performance over its DGEBA counterparts and meets a wide variety of requirements in engineering.

中文翻译：

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具有高交联密度的生物基呋喃环氧树脂的阻燃性和力学性能

这项工作概述了从可持续的2,5-双（（环氧乙烷-2-基甲氧基）甲基）呋喃（BOF）中制备生物环氧树脂的有趣方法。3,3'-二氨基二苯砜（33DDS）和4,4'-二氨基二苯砜（44DDS）被用作固化剂。为了进行比较，还开发了双酚A二缩水甘油醚（DGEBA）的基于石油的网络。系统分析表明，与DGEBA / DDS热固性塑料相比，BOF / DDS网络显示出更高的交联密度和机械性能。值得注意的是，在BOF / 44DDS热固性材料中制造了一种引人注目的多层管状微结构，它极大地提高了机械性能。除此之外，BOF / DDS复合材料还具有出色的阻燃性。特别是对于BOF / 44DDS，自熄发生在7 s内。阻燃机理证实在BOF / DDS的热解过程中会出现低的放热速率和放热能力以及致密的炭层。因此，BOF / DDS表现出优于DGEBA同类产品的性能，并满足工程上的各种要求。