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可降解的半循环化环氧树脂用于可回收的碳纤维增强复合材料

Kai Li¹, Zhonggang Wang¹

¹Department of Polymer Science and Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.

|February 13, 2025

概括

从复合材料中回收昂贵的碳纤维 (CFs) 现在可以使用一种新的可降解环氧树脂 (H-ER). 这种H-ER树脂可以轻松回收和重复使用CF,解决环境和经济方面的问题.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
可持续工程可持续工程

背景情况:

由于环境和经济因素,从使用终止的碳纤维增强复合材料 (CFRCs) 中回收碳纤维 (CFs) 至关重要.
传统的热固化矩阵对有效的CF回收提出了挑战.

研究的目的:

开发一种节能方法,从CFRC中回收CF.
为CFRC应用设计和合成一种新的可降解环氧树脂.

主要方法:

合成了一种含有乙的液体半环合物环氧树脂 (H-ER).
研究了固化H-ER的机械和热性能.
评估了H-ER在酸性水溶液中的降解行为.
使用GC-MS和FTIR分析了降解产品.
评估了从基于H-ER的CFRC中回收的CF的可回收性.

主要成果:

与ERL-4221相比,化H-ER表现出显著增强的热稳定性,剪切强度,屈曲强度和关键应力强度因子.
H-ER对溶剂,和弱酸具有耐药性,在中等强度的酸性溶液中具有受控的降解.
降解是通过乙链接的裂解发生的,产生可重复使用的甲.
从基于H-ER的CFRC中回收的CF没有受损,适合制造.

结论:

开发的H-ER树脂为可持续的CFRC回收提供了一个可行的解决方案.
控制H-ER的可降解性有助于高效的碳纤维回收.
再利用降解副产品的潜力提高了回收过程的经济可行性.

关键词:

碳纤维碳纤维的使用复合材料是一种复合材料.可降解的可降解物质环氧树脂是一种环氧树脂.可回收利用的可回收利用.

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