高度交叉连接的碳管气凝具有增强的弹性和耐疲劳性
Lei Zhuang1, De Lu1, Jijun Zhang1
1State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University, 710049, Xi'an, China.
Nature communications
|June 1, 2023
概括
研究人员使用相互连接的碳管开发了高度可压缩和耐疲劳的碳气凝. 这些先进的材料具有出色的机械性能和热稳定性,使其适用于苛刻的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 机械工程 机械工程
背景情况:
- 碳气凝为软机器人和压力传感器中的应用提供了有前途的特性,如弹性和机械强度.
- 现有的碳气凝往往有脆弱性和过度可变性,这限制了它们的实际使用.
- 开发具有增强机械完整性和可压缩性的先进气凝对于扩大其应用范围至关重要.
研究的目的:
- 为了设计高压缩性和耐疲劳的碳气凝.
- 研究新型碳管气凝的机械行为和多功能性质.
- 探索这些气凝在恶劣环境应用中的潜力.
主要方法:
- 通过组装相互连接的碳管,制造碳气凝.
- 机械性能的表征,包括压力强度,可回收应变和耐疲劳性.
- 评估热稳定性和调节导电性和电磁屏蔽能力的评估.
主要成果:
- 合成的碳管气凝呈现出接近零的波桑比率.
- 达到超过20MPa的最大强度,完全可回收的拉伸率高达99%.
- 在99%的应变下,经过1000个循环后,经过不到1.5%的永久性降解,表现出高耐疲劳性.
- 在气氛中表现出高达2500°C的优异热稳定性.
- 展示了可调节的电导率和有效的电磁屏蔽.
结论:
- 新型的碳管气凝比传统的脆弱气凝有了显著的进步.
- 它们的优越压缩性,耐疲劳性和多功能性质使它们成为软机器人,传感器和恶劣环境的理想选择.
- 这项研究为设计高性能碳基材料开辟了新的途径.
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