Carbon Fiber Reinforced Epoxy Resin Composites with Excellent Recyclable Performance via Dynamic Acylsemicarbazide Moieties,ACS Applied Polymer Materials

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Carbon Fiber Reinforced Epoxy Resin Composites with Excellent Recyclable Performance via Dynamic Acylsemicarbazide Moieties
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2023-06-02 , DOI: 10.1021/acsapm.3c00658
Xi Yang ₁ , Yindong Wang ₁ , Xiaokang Zhang ₁ , Zhiwen Jian ₁ , Xili Lu ₁ , Zhanhua Wang ₁ , Hesheng Xia ₁

Affiliation

Achieving the recycling of the carbon fiber reinforced epoxy resin composite is of great significance toward pursuing a sustainable and circular economy but remains a challenge due to the infusible and insoluble properties of epoxy resin. In this study, the acylsemicarbazide (ASC) moieties are introduced into the network to obtain the dynamic reversible cross-linked thermoset epoxy resin (EPOXY-ASC). An optimized EPOXY-ASC with a tensile stress of 81.27 MPa and an elongation at break of 13.80% exhibits excellent reprocessing performance due to the dynamic reversibility of ASC moieties. The carbon fiber reinforced polymer composites with the EPOXY-ASC resin were successfully prepared with an interlaminar shear strength of 44.86 MPa and can be fully recycled by a solvolysis method without additional agents. The recycled carbon fiber and resin still maintain the original properties well. This study provides a solution to recycle the CFRP composite, which conforms to a circular economy.

中文翻译：

通过动态酰基氨基脲部分具有优异可回收性能的碳纤维增强环氧树脂复合材料

实现碳纤维增强环氧树脂复合材料的回收利用对于追求可持续和循环经济具有重要意义，但由于环氧树脂的不熔和不溶特性，仍然是一个挑战。在本研究中，将酰基氨基脲（ASC）部分引入网络中以获得动态可逆交联热固性环氧树脂（EPOXY-ASC）。优化的 EPOXY-ASC 的拉伸应力为 81.27 MPa，断裂伸长率为 13.80%，由于 ASC 部分的动态可逆性，表现出优异的再加工性能。成功制备了含有EPOXY-ASC树脂的碳纤维增强聚合物复合材料，其层间剪切强度为44.86 MPa，并且可以通过溶剂分解方法完全回收，无需额外的试剂。回收后的碳纤维和树脂仍然很好地保持了原有的性能。本研究提供了一种回收CFRP复合材料的解决方案，符合循环经济。

更新日期：2023-06-02

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