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增材制造的多壁碳纳米管/热塑性聚氨酯纳米复合材料的压阻行为

Piezoresistive Behaviour of Additively Manufactured Multi-Walled Carbon Nanotube/Thermoplastic Polyurethane Nanocomposites.

作者信息

Kim Myoungsuk, Jung Jaebong, Jung Sungmook, Moon Young Hoon, Kim Dae-Hyeong, Kim Ji Hoon

机构信息

School of Mechanical Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Busan 46241, Korea.

Division of Advanced Materials, Korea Research Institute of Chemical Technology, 141 Gajeongro, Daejeon 305-600, Korea.

出版信息

Materials (Basel). 2019 Aug 16;12(16):2613. doi: 10.3390/ma12162613.

DOI:10.3390/ma12162613
PMID:31426317
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6719982/
Abstract

To develop highly sensitive flexible pressure sensors, the mechanical and piezoresistive properties of conductive thermoplastic materials produced via additive manufacturing technology were investigated. Multi-walled carbon nanotubes (MWCNTs) dispersed in thermoplastic polyurethane (TPU), which is flexible and pliable, were used to form filaments. Specimens of the MWCNT/TPU composite with various MWCNT concentrations were printed using fused deposition modelling. Uniaxial tensile tests were conducted, while the mechanical and piezoresistive properties of the MWCNT/TPU composites were measured. To predict the piezoresistive behaviour of the composites, a microscale 3D resistance network model was developed. In addition, a continuum piezoresistive model was proposed for large-scale simulations.

摘要

为了开发高灵敏度的柔性压力传感器，研究了通过增材制造技术生产的导电热塑性材料的机械性能和压阻性能。分散在柔性且柔韧的热塑性聚氨酯（TPU）中的多壁碳纳米管（MWCNT）被用于形成细丝。使用熔融沉积建模打印了具有不同MWCNT浓度的MWCNT/TPU复合材料试样。进行了单轴拉伸试验，同时测量了MWCNT/TPU复合材料的机械性能和压阻性能。为了预测复合材料的压阻行为，开发了一个微观尺度的三维电阻网络模型。此外，还提出了一个用于大规模模拟的连续压阻模型。

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