【摘要】 印刷电子正逐渐从柔性电子向可拉伸电子方向发展，开发平面的可拉伸导体对可拉伸电子具有重要的意义。快速制备柔软的但有一定强度的可拉伸导体的方法是将导电材料与弹性聚合物复合形成导电油墨并印刷在弹性基材上。基于硅胶的弹性基材具有良好的生物相容性、热稳定性和化学稳定性，弹性接近皮肤，被用于表皮电子器件、智能软体机器人、可穿戴电子器件等。鉴于硅胶表面非极性的特性，为实现印刷的墨层与硅胶表面之间高的粘附牢度，对印刷油墨提出较高要求。本文重点介绍了两类用于硅胶基材的可拉伸导电油墨且将其进行对比，并分析了印刷后图案的后处理方式对拉伸性的影响。指出采用非极性连结料并选择相容性好的导电组分制备导电油墨是硅胶基材上印刷可拉伸电极的关键；复合不同导电组分、在墨层中引入多孔结构、氙灯烧结有利于提升硅胶基可拉伸电子器件的性能。更多还原

【Abstract】 Printed electronics are gradually developing from flexible electronics to stretchable electronics. It is of great significance to develop stretchable conductors with planar shape for stretchable electronics. A facile way to prepare soft but strong stretchable conductors is adopting a printing process on an elastic substrate using hybrid conductive inks containing conductive materials and elastic polymers. Silicone-based elastic substrates have good bio-compatibility, thermal stability, and chemical stability, as well as elasticity close to human skin. Silicone substrate has been used for skin electronic devices, intelligent soft robots, and wearable electronics, etc. For the sake of the non-polar properties of the silicone surface, the bonding strength between the printed ink layer and the silicone surface is the key for the application of stretchable conductive inks. This paper mainly outlines and compares two kinds of stretchable conductive inks for silicone substrates, and clarifies the influence of post-processing on the stretchability of the printed patterns. It points out that the adoption of conductive ink prepared by using a binder with non-polarity and a conductive component well compatible with the binder is the key to acquire stretchable conductors on the silicone substrates; and the hybridization of multiple conductive components, introducing porous structure to the ink layer, and Xenon lamp curing are conducive to the performance improvement of the produced silicone-based stretchable electrodes.更多还原