Waterborne polyurethane toughened carbon nanotube paper with excellent Joule heating properties and strain-sensing potential

IF 5.8 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2025-06-17 DOI:10.1007/s42823-025-00934-2

Ru Chen, Guangtai Zhao, Xinmiao Cao, Wenxuan Wang, Yunxiang Xiao, Simeng Tian, Jize Dong

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引用次数: 0

Abstract

Currently, carbon nanotubes (CNTs) paper (also called Buckypaper, BP) is highly promising for application in flexible electronic materials. However, the lack of flexibility and durability of BP greatly affects the comprehensive performance. Here, we propose a simple method for manufacturing a waterborne polyurethane (WPU) toughened carbon nanotube paper (WPU-BP) with excellent overall performance through vacuum filtration. In WPU-BP, as the content of WPU increased from 0 to 48.3%, the tensile strength increased from 8.08 to 16.25 MPa, and the elongation at break increased from 2.14 to 225.04%, while the conductivity decreased from 41.34 to 20.33 S/cm. The WPU-BP with the WPU content of 18.9% (CNP8) demonstrated the optimum strain sensing performance. The gauge factor of CNP8 can reach 8.57 with a response time of 145 ms. It can detect a wide range of body movements from large joint movements to slight breathing, and exhibits high stability, maintaining high stability even after 1000 cycles. In addition, CNP8 shows excellent Joule heating performance, it can reach 186.1 °C at 5 V, with heating and cooling times of only 16 and 18 s, respectively, as well as with good reproducibility. In a word, the as-prepared WPU-BP exhibits excellent both strain sensing performance and Joule heating effect, and holds significant potential for applications in heating devices and wearable sensors.

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水性聚氨酯增韧碳纳米管纸具有优异的焦耳加热性能和应变传感潜力

目前，碳纳米管纸（carbon nanotubes, cnt）在柔性电子材料中具有很高的应用前景。然而，BP的柔韧性和耐久性不足，极大地影响了其综合性能。本文提出一种简单的真空过滤法制备综合性能优良的水性聚氨酯增韧碳纳米管纸（WPU- bp）。在WPU- bp中，随着WPU含量从0增加到48.3%，拉伸强度从8.08提高到16.25 MPa，断裂伸长率从2.14%提高到225.04%，电导率从41.34 S/cm下降到20.33 S/cm。WPU含量为18.9% （CNP8）的WPU- bp具有最佳的应变传感性能。CNP8的测量因子达到8.57，响应时间为145 ms。它可以检测大范围的身体运动，从大的关节运动到轻微的呼吸，并具有高稳定性，即使在1000次循环后仍保持高稳定性。此外，CNP8具有优异的焦耳加热性能，在5 V下可达到186.1℃，加热和冷却时间分别仅为16 s和18 s，并且具有良好的再现性。总之，制备的WPU-BP具有优异的应变传感性能和焦耳热效应，在加热器件和可穿戴传感器中具有重要的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.