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首页> 外文期刊>Advanced Functional Materials >Versatile, High-Power, Flexible, Stretchable Carbon Nanotube Sheet Heating Elements Tolerant to Mechanical Damage and Severe Deformation
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Versatile, High-Power, Flexible, Stretchable Carbon Nanotube Sheet Heating Elements Tolerant to Mechanical Damage and Severe Deformation

机译：多功能，高功率，柔性，可拉伸的碳纳米管薄板加热元件，可承受机械损坏和严重变形

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摘要

A macroscopic carbon nanotube (CNT) sheet-based heating element having flexible, stretchable, and damage-tolerant features, and wide applicability in harsh environments, is introduced. Because of the intrinsic connection of extremely flexible CNT bundles throughout the sample by van der Waals interactions without use of a binder, the electrical resistance variation of the CNT sheet on elastomer heating element as a function of strain is completely suppressed to some extent, even when stretched under up to 400% strain, which guarantees electrical stability under severe mechanical deformation. In addition, the spatial uniformity of the heat generated from the microaligned CNT bundles reduces the temperature variation inside the sample, which also guarantees thermal stability and operation at a higher average temperature. Such exceptional performance is achieved by the passivation of the elastomer layer on the CNT sheets. Furthermore, the mechanical robustness of this flexible, stretchable heating element is demonstrated by stable heater operation, even when the heating element is damaged. In addition, this design concept of CNT sheet on elastomer is extended to transparent flexible heaters and electric-thermochromic windows.
机译：介绍了一种具有柔韧性，可拉伸性和耐损伤性的宏观碳纳米管（CNT）片基加热元件，并且在恶劣环境下具有广泛的适用性。由于在不使用粘合剂的情况下通过范德华相互作用在整个样品中实现了极柔韧的CNT束的固有连接，因此即使在以下情况下，也可以在一定程度上完全抑制弹性体加热元件上CNT片材的应变引起的电阻变化在高达400％的应变下可拉伸，从而确保在严重机械变形下的电气稳定性。另外，由微取向的CNT束产生的热量的空间均匀性减小了样品内部的温度变化，这也保证了热稳定性和在较高平均温度下的操作。通过将弹性体层钝化在CNT板上，可以实现这种出色的性能。此外，即使在加热元件损坏的情况下，通过稳定的加热器操作也可以证明这种柔性可拉伸加热元件的机械强度。另外，这种在弹性体上的CNT片的设计理念被扩展到透明的柔性加热器和电热变色窗。

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