Microwave Radiation Assisted Construction of Fused Deposition Modeling 3D Printing Flexible Sensors

IF 2.5 4区 化学 Q3 POLYMER SCIENCE
Xueling Hu, Yanling Zheng, Dhandapani Kuzhandaivel, Xiaohong Ding, Lixin Wu, Jianlei Wang, Xianliang Lin, Xiaoyong Hu, Xu Zhang
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引用次数: 0

Abstract

With the rapid development of the internet of things, the simple preparation of sensors has become a challenge. The present work presents the simple preparation of flexible sensors by using the fused deposition modeling (FDM) 3D printing combined with the microwave radiation‐assisted treatment of the thermoplastic polyurethane (TPU) with carbon nanotubes (CNTs) as conductive fillers to create the flexible sensors. The as‐prepared TPU/CNT composites exhibit the 7.27 MPa tensile strength and 401% elongation at break, similar to those of the pure TPU. After 200 tensile cycles, the TPU/CNT composites can still stably convert pressure into electrical signals, which can be used as flexible sensors with high sensitivity (0.879 kPa−1). In addition, shoe insoles and finger cover with sensing performance are fabricated through the FDM 3D printing technology, demonstrating the potential of the sensors to monitor human gait, finger straightening, and bending movements. The as‐proposed method involves the embedding CNTs as conductive fillers on the surface of TPU to form the TPU/CNT composite conductive layers on the surface of TPU, which is beneficial for maintaining the elasticity of the polymer matrix. The challenges in preparing stable, low‐cost, and scalable flexible sensors and highlights of the advantages of 3D printing technology in manufacturing flexible piezoresistive sensors are also deeply discussed.
微波辐射辅助构建熔融沉积模型三维打印柔性传感器
随着物联网的快速发展,传感器的简单制备已成为一项挑战。本研究采用熔融沉积建模(FDM)3D 打印技术,结合微波辐射辅助处理热塑性聚氨酯(TPU)与碳纳米管(CNT)作为导电填料,简单制备出柔性传感器。制备的热塑性聚氨酯/碳纳米管复合材料的拉伸强度为 7.27 兆帕,断裂伸长率为 401%,与纯热塑性聚氨酯相似。经过 200 次拉伸循环后,热塑性聚氨酯/碳纳米管复合材料仍能稳定地将压力转化为电信号,可用作高灵敏度(0.879 kPa-1)的柔性传感器。此外,还通过 FDM 3D 打印技术制作了具有传感性能的鞋垫和手指套,证明了传感器在监测人体步态、手指伸直和弯曲运动方面的潜力。拟议的方法是将 CNT 作为导电填料嵌入热塑性聚氨酯表面,在热塑性聚氨酯表面形成热塑性聚氨酯/CNT 复合导电层,这有利于保持聚合物基体的弹性。此外,还深入讨论了制备稳定、低成本、可扩展的柔性传感器所面临的挑战,并重点介绍了 3D 打印技术在制造柔性压阻传感器方面的优势。
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来源期刊
Macromolecular Chemistry and Physics
Macromolecular Chemistry and Physics 化学-高分子科学
CiteScore
4.30
自引率
4.00%
发文量
278
审稿时长
1.4 months
期刊介绍: Macromolecular Chemistry and Physics publishes in all areas of polymer science - from chemistry, physical chemistry, and physics of polymers to polymers in materials science. Beside an attractive mixture of high-quality Full Papers, Trends, and Highlights, the journal offers a unique article type dedicated to young scientists – Talent.
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