材料科学
碳纳米管
纳米复合材料
分散剂
布基纸
聚合物
纳米管
纳米技术
复合材料
渗流阈值
色散(光学)
电阻率和电导率
电气工程
光学
物理
工程类
作者
Jia‐Wun Li,Ho-Fu Chen,Pei-Yun Huang,Chung−Feng Jeffrey Kuo,Chih‐Chia Cheng,Chih‐Wei Chiu
出处
期刊:Polymers
[MDPI AG]
日期:2023-12-14
卷期号:15 (24): 4706-4706
标识
DOI:10.3390/polym15244706
摘要
A photocurable resin/carbon nanotube (CNT) nanocomposite was fabricated from aligned CNTs in an acrylic matrix. The conductivity of the nanocomposite increased rapidly and then stabilized when the CNT content was increased up to and beyond the percolation threshold. Various structures were created using a digital light processing (DLP) 3D printer. Various polymeric dispersants (SMA-amide) were designed and synthesized to improve the CNT dispersion and prevent aggregation. The benzene rings and lone electron pairs on the dispersant interacted with aromatic groups on the CNTs, causing the former to wrap around the latter. This created steric hindrance, thereby stabilizing and dispersing the CNTs in the solvent. CNT/polymer nanocomposites were created by combining the dispersant, CNTs, and a photocurable resin. The CNT content of the nanocomposite and the 3D printing parameters were tuned to optimize the conductivity and printing quality. A touch-based human interface device (HID) that utilizes the intrinsic conductivity of the nanocomposite and reliably detects touch signals was fabricated, enabling the free design of sensors of various styles and shapes using a low-cost 3D printer. The production of sensors without complex circuitry was achieved, enabling novel innovations.
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