碳纳米管增强复合材料的机械性能研究
Zhouyi Li1,2, Haoran Liu2, Yuan Li1
1School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China.
Polymers
|August 26, 2023
概括
碳纳米管膜增强了碳纤维复合材料的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 复合材料 复合材料 复合材料
- 纳米技术 纳米技术
背景情况:
- 碳纤维复合材料是具有广泛应用的先进材料.
- 提高它们的机械性能,特别是断裂性,至关重要.
- 碳纳米管 (CNTs) 为材料改造提供了独特的特性.
研究的目的:
- 研究碳纳米管 (CNT) 薄膜对碳纤维复合材料的机械性能的影响.
- 评估CNT修改对机内和机外压缩性能的影响.
- 为了优化准备过程,以改善间层骨折特性.
主要方法:
- 碳纤维层材被用CNT薄膜进行修改.
- 在平面内和平面外的压缩测试在广泛的应变速率范围内进行 (10−3103 s−1).
- 模式I断裂测试使用自闭柜和真空树脂传递成型 (VARTM) 方法进行.
主要成果:
- 通过阻碍裂传播,CNT间层硬化改善了平面外压缩性能.
- 由于CNT薄膜分层,动态内平面压缩性能下降.
- 通过增加裂纹路径长度,VARTM 处理与 CNTs 增强了层间断裂特性.
- 介膜厚度与CNT层数量呈现出线性相关性.
结论:
- 在碳纤维复合材料中,CNT薄膜可以提高外平面性能和断裂性,特别是在VARTM加工中.
- 机内动态性能可能会受到损害,需要仔细考虑CNT膜的准备.
- CNT层的数量直接影响层间厚度,为材料设计提供可控制的参数.
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