高耐撕裂的可回收碳纤维增强复合材料依赖于编织交联聚氨
Shunli Wang1, Yinsheng Li1,2, Limei Tian1,2
1Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China.
Nano letters
|April 8, 2025
概括
这项研究引入了一种用于碳纤维复合材料的新型编织聚氨粘合剂,显著提高了抗撕裂性,并使非破坏性的回收利用成为可能. 这一创新解决了传统复合材料的关键局限性.
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
- 复合材料 复合材料 复合材料
背景情况:
- 碳纤维增强聚合物复合材料 (CFRPs) 中的共振交联聚合物具有较差的可塑性,较低的抗撕裂性和不可回收性.
- 传统的环氧结合剂限制了CFRP的性能和寿命终止的选择.
研究的目的:
- 为CFRP开发一种新的粘合剂,以提高抗撕裂性和可回收性.
- 研究柔性编织聚氨 (WPPN) 作为增强复合材料性能的粘合剂的潜力.
主要方法:
- 使用编织交叉连接器合成柔性编织聚氨 (WPPN).
- 制造基于WPPN的碳纤维复合材料 (WPPN-CF).
- 通过实验测试和模拟,对WPPN和WPPN-CF的机械性能 (强度,性,断裂能量,抗撕裂) 的表征.
主要成果:
- WPPN2000显示了超高强度 (50.4 MPa),性 (267.2 MJ m-3),以及断裂能量 (211.6 kJ m-2).
- 与环氧-CF复合材料 (61.2 kJ m-2) 相比,WPPN2000-CF复合材料的抗撕能力增加了16.4倍 (1004.5 kJ m-2).
- 动态编织交叉连接允许使用溶剂进行碳纤维的非破坏性回收,确认可回收性.
结论:
- 柔性编织聚氨是一种有前途的粘合剂,用于制造高性能,可回收的CFRP.
- 编织交叉连接策略为设计先进的碳纤维粘合剂提供了一种新方法.
- 这项工作克服了传统CFRP的局限性,为更可持续的复合材料铺平了道路.
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