Wang Ying, Li Zhouyi, Liu Yan, Pei Penghao
School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an 710048, China.
College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
Polymers (Basel). 2024 Nov 27;16(23):3307. doi: 10.3390/polym16233307.
In this paper, we prepared carbon nanotube (CNT) epoxy composite films and conducted tensile experiments at various temperatures (-40 °C, -10 °C, 20 °C, and 50 °C) and frequencies (1 Hz, 10 Hz, and 20 Hz) using Dynamic Mechanical Analysis (DMA). This study reveals the effects of temperature and frequency on the mechanical properties of CNT films and CNT epoxy composite films. The results indicate that the energy storage modulus of the pure CNT film is approximately 13 times greater than that of the composite material at 20 °C. Additionally, the loss factor of the composite material is about 25 times that of pure epoxy resin and 7 times that of pure CNT film. These findings suggest that the presence of epoxy resin reduces the elastic deformation capacity of the CNT film while enhancing its damping properties. The mechanical properties of CNT films and CNT epoxy composites at varying temperatures and frequencies investigated in this work offer valuable insights for future applications and studies of CNT films and CNT epoxy composites in diverse environments.
在本文中，我们制备了碳纳米管（CNT）环氧复合薄膜，并使用动态力学分析（DMA）在不同温度（-40°C、-10°C、20°C和50°C）和频率（1Hz、10Hz和20Hz）下进行了拉伸实验。本研究揭示了温度和频率对CNT薄膜及CNT环氧复合薄膜力学性能的影响。结果表明，在20°C时，纯CNT薄膜的储能模量约为复合材料的13倍。此外，复合材料的损耗因子约为纯环氧树脂的25倍，纯CNT薄膜的7倍。这些发现表明，环氧树脂的存在降低了CNT薄膜的弹性变形能力，同时增强了其阻尼性能。本文研究的不同温度和频率下CNT薄膜及CNT环氧复合材料的力学性能，为CNT薄膜及CNT环氧复合材料在不同环境中的未来应用和研究提供了有价值的见解。
