碳纤维增强环氧树脂复合材料的化学回收再利用综述,New Carbon Materials

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碳纤维增强环氧树脂复合材料的化学回收再利用综述,New Carbon Materials

2024-03-19 05:23| 来源: 网络整理| 查看: 265

碳纤维增强环氧树脂复合材料(CFRCs)由于其优异的机械性能已被用于汽车和航空航天领域。CFRCs的回收利用近年来引起了全世界的关注。化学回收是一种很有前途的方法,它可以选择性地破坏特定的树脂键以实现可控降解。基体环氧树脂降解为单体或低聚物,高价值碳纤维可回收利用。首先,我们总结了化学回收方法的进展,主要是超临界和亚临界流体中的氧化、溶剂解和醇解、电化学回收等。然后,我们简要介绍了通过将可逆化学键插入到可回收热固性树脂中的可回收热固性树脂的合成和解聚机理。树脂制备可回收树脂,这有利于 CFRC 中组件的回收和再利用。最后,提出了 CFRC 化学回收和高性能可回收环氧树脂制备的可能发展方向。

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Review of chemical recycling and reuse of carbon fiber reinforced epoxy resin composites

Carbon fiber-reinforced epoxy resin composites (CFRCs) have been used in the automotive and aerospace fields because of their excellent mechanical properties. The recycling of CFRCs has attracted attention worldwide in recent years. Chemical recycling is a promising method, which can selectively destroy specific resin bonds to achieve controllable degradation. Matrix epoxy resins are degraded into monomers or oligomers, and the high-value carbon fibers can be recycled. First, we summarize progress on chemical recovery methods, mainly oxidation, solvolysis and alcoholysis in super- and subcritical fluids, electrochemical recycling etc. Then, we briefly introduce the synthesis and depolymerization mechanism of recyclable thermosetting resins by the insertion of reversible chemical bonds into the resin to prepare recyclable resins, which is beneficial for the recycling and reuse of components in CFRCs. Finally, possible developments in the chemical recycling of CFRCs and the preparation of high-performance recyclable epoxy resins are proposed.



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