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Effect of the solvent evaporation rate of silver ink on the electrohydrodynamic-printing formability of textile-based printing electronics
Textile Research Journal ( IF 2.3 ) Pub Date : 2021-09-09 , DOI: 10.1177/00405175211044161
Wenjing Guo 1 , Jiyong Hu 1, 2 , Xiong Yan 1
Affiliation  

The enabling electrohydrodynamic (EHD) printing technology in a one-step forming, continuous, and controllable manner has gained wide attention in the field of flexible printed electronics. The evaporation characteristic of ink solvent during the EHD printing greatly affects the shape of the jet as well as the penetration and diffusion of inks on fabrics, which is crucial to the formation of high-quality printed electronics. However, few works have deeply investigated the control of ink solvent evaporation to adjust the formability of EHD printing electronics on rough and porous textiles. Here, conductive inks with different solvent evaporation rates are formulated. The effect of solvent evaporation on the motion of inks is evaluated by the contact angle over time. Furthermore, the morphology and electrical properties under different deformation of EHD-printed conductive lines are observed and measured. The results show that the morphology of conductive lines printed on fabric could be accurately controlled by the ratios of the solvent in inks, and the solvent evaporation rate has a significant inverse-parabolic effect on electrical resistance and its stability under deformation. Moreover, the serviceability of the optimal ink is demonstrated by the performance of an EHD-printed antenna for ultra-high frequency radio frequency identification tags, and its maximum reading range is 9.1 m under typical application examples. These findings will provide a guide for ink formulation and process control of EHD printing in flexible textile-based electronics.



中文翻译:

银墨溶剂挥发速率对纺织基印刷电子产品电流体印刷成形性的影响

一步成型、连续、可控的电流体动力(EHD)印刷技术在柔性印刷电子领域受到广泛关注。EHD印刷过程中油墨溶剂的蒸发特性极大地影响了喷射的形状以及油墨在织物上的渗透和扩散,这对于高质量印刷电子产品的形成至关重要。然而,很少有工作深入研究控制油墨溶剂蒸发以调节 EHD 印刷电子在粗糙和多孔纺织品上的成型性。在这里,配制了具有不同溶剂蒸发率的导电油墨。溶剂蒸发对油墨运动的影响通过接触角随时间的变化来评估。此外,观察和测量了 EHD 印刷导线在不同变形下的形貌和电性能。结果表明,印制在织物上的导电线形貌可以通过油墨中溶剂的比例进行精确控制,溶剂蒸发速率对电阻及其变形稳定性具有显着的反抛物线效应。此外,用于超高频射频识别标签的EHD印刷天线的性能证明了最佳墨水的适用性,其在典型应用示例下的最大读取范围为9.1 m。这些发现将为基于纺织品的柔性电子产品中 EHD 印刷的油墨配方和过程控制提供指导。结果表明,印制在织物上的导电线形貌可以通过油墨中溶剂的比例进行精确控制,溶剂蒸发速率对电阻及其变形稳定性具有显着的反抛物线效应。此外,用于超高频射频识别标签的EHD印刷天线的性能证明了最佳墨水的适用性,其在典型应用示例下的最大读取范围为9.1 m。这些发现将为基于纺织品的柔性电子产品中 EHD 印刷的油墨配方和过程控制提供指导。结果表明,印制在织物上的导电线形貌可以通过油墨中溶剂的比例进行精确控制,溶剂蒸发速率对电阻及其变形稳定性具有显着的反抛物线效应。此外,用于超高频射频识别标签的EHD印刷天线的性能证明了最佳墨水的适用性,其在典型应用示例下的最大读取范围为9.1 m。这些发现将为基于纺织品的柔性电子产品中 EHD 印刷的油墨配方和过程控制提供指导。溶剂蒸发速率对电阻及其变形稳定性具有显着的反抛物线效应。此外,用于超高频射频识别标签的EHD印刷天线的性能证明了最佳墨水的适用性,其在典型应用示例下的最大读取范围为9.1 m。这些发现将为基于纺织品的柔性电子产品中 EHD 印刷的油墨配方和过程控制提供指导。溶剂蒸发速率对电阻及其变形稳定性具有显着的反抛物线效应。此外,用于超高频射频识别标签的EHD印刷天线的性能证明了最佳墨水的适用性,其在典型应用示例下的最大读取范围为9.1 m。这些发现将为基于纺织品的柔性电子产品中 EHD 印刷的油墨配方和过程控制提供指导。

更新日期:2021-09-09
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