【摘要】 以碳纳米管薄膜为原料，通过氯磺酸牵伸和二次热压的方法制备了高取向、高性能的碳纳米管薄膜。通过扫描电子显微镜、拉曼光谱仪和万能试验机表征分析薄膜的微观结构与力学性能。结果表明，经氯磺酸牵伸处理后，碳纳米管薄膜的取向度显著提升，且薄膜中杂质明显减少，其中一次牵伸处理可将薄膜的力学强度提升近7倍。此外，通过二次热压处理，条件为12 MPa、300℃、4 h，薄膜的力学性能进一步提升至原始薄膜的12倍。研究结果为碳纳米管薄膜的结构调控与性能优化提供了新思路，同时为高性能柔性薄膜材料的开发奠定了理论与实验基础。更多还原

【Abstract】 High-oriented and high-performance carbon nanotube(CNT) films were fabricated using chlorosulfonic acid stretching combined with a two-step hot-pressing process. The microstructure and mechanical properties of the films were characterized and analyzed using scanning electron microscopy(SEM) and Raman spectroscopy. The results show that the orientation of the CNT films was significantly enhanced after chlorosulfonic acid stretching, with a marked reduction in impurities. Single-pass stretching improved the tensile strength of the films by nearly 7 times compared to the pristine films. Furthermore, the two-step hot-pressing treatment(12 MPa, 300°C, 4 h) further enhanced the mechanical performance, achieving an improvement of up to 12 times over the original CNT films. This study provides new insights into the structural tuning and performance optimization of CNT films and establishes a solid foundation for the development of high-performance flexible film materials.更多还原