通过分层相间形成来提高复合材料的性
Sumit Gupta1, Tanvir Sohail2, Marti Checa3
1Carbon and Composites Group, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 25, 2023
概括
研究人员使用化学可变纳米纤维开发了一种新的层次架构,以增强复合材料中的纤维矩阵结合. 这大大提高了复合材料的强度和性,用于高性能应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 在纤维增强复合材料中同时实现高强度和可塑性是一个重大挑战.
- 现有的方法往往难以优化这两种特性,从而限制了复合材料的性能.
- 纤维矩阵介面对于负载转移和整体复合材料完整性至关重要.
研究的目的:
- 开发一个分层的架构,以提高纤维增强复合材料的强度和可塑性.
- 使用可化学转换的纳米纤维设计一个硬化纤维矩阵接相.
- 研究纳米工程复合材料中改善粘附和应力转移的机制.
主要方法:
- 高面比热塑性纳米纤维的电成微米级碳纤维.
- 使用可化学转换的纳米纤维,与聚合物矩阵产生共价键.
- 采用分子动力学模拟和原子力显微镜来分析相间特性和粘附.
主要成果:
- 创建了一个分层的纳米纤维支架,与碳纤维物理交织在一起,并与矩阵结合.
- 纳米纤维支架促进了高效的应力转移,并增强了复合材料的性.
- 纳米工程复合材料展示了大约60%的飞机内切削强度和100%的性.
结论:
- 开发的层次架构有效地强化了纤维矩阵相间,克服了强度-柔性权衡.
- 这种新的方法可以创建高性能,硬化复合材料.
- 该战略为先进的复合材料制造提供了一个新的途径.
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