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通过真空辅助树脂输液工艺生产的生物基热固化环氧复合材料的化学回收

Liberata Guadagno¹, Raffaele Longo¹, Marialuigia Raimondo¹

¹Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy.

|May 14, 2025

概括

碳纤维增强复合材料 (CFRC) 的化学回收在90°C是有效的. 该工艺回收高质量的碳纤维和环氧单体,提供可持续的废物管理和资源保护.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
可持续化学可持续化学

背景情况:

碳纤维增强复合材料 (CFRC) 是具有高机械性能的先进材料.
处理CFRC带来了重大的环境挑战.
化学回收为CFRC废物管理提供了一个潜在的解决方案.

研究的目的:

研究通过真空辅助树脂输注 (VARI) 产生的CFRC的化学回收.
通过评估不同的温度来优化回收过程.
评估回收材料的质量,以便有可能重复使用.

主要方法:

CFRC样品在70,80和90°C时用酸和过氧化混合物处理.
热重力测量分析 (TGA) 用于确定反应产量.
在回收的纤维上进行了光谱,形态和电导分析.

主要成果:

在90°C的回收,在树脂的玻璃过渡温度 (Tg = 90.3°C) 附近,产生了最佳的结果.
该过程选择性地分裂了C-N键,恢复了环氧单体和寡合体.
与较低温度相比,回收纤维的清洁度和电导率 (8.04 × 102 S/m) 得到了改善.

结论:

在90°C时,CFRC的化学回收是可行的和高效的.
该过程可以回收有价值的成分,减少废物和节约资源.
这种可持续的方法解决了与复合废物相关的节能和环境问题.

关键词:

对于CFRCs来说,这是一个很好的方法.化学回收化学回收化学回收环氧树脂是一种环氧树脂.

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