协同金属配位作用将含巯基线型聚合物链与一维导电无机银纳米线（Ag NWs）进行均匀复合，制备得到优异导电性纳米复合水凝胶，并对水凝胶微观结构及流变性能进行测试研究。结果表明，该复合水凝胶网络结构均匀，且有明显的剪切稀变行为，可以作为直接书写（DIW）打印的油墨。对3D打印凝胶构件的机械性能、自修复性能、电学性能进行了系统性研究，打印后的凝胶构件可实现优异的拉伸性（474%）和高断裂强度（0.96 MPa），且具有良好的室温自修复性能（修复效率为74.8%）。通过打印路径的设计，获得具有导电各向异性的凝胶构件。将打印构件应用于皮肤传感器，能够实时监测人体手指的运动状态。

Conductive nano composite hydrogel is prepared by homogeneous combination of thiol-terminated linear polymers and one-dimensional conductive silver nanowires (Ag NWs) through metal coordination.It is shown through microstructure and rheological properties measurements that the obtained hydrogel has a uniform network structure and an obvious shear-thinning behavior,suggesting its great potential as ink for the direct-ink-writing (DIW) printing.The mechanical,self-healing and electrical properties of 3D printed architectures are characterized.It is indicated that the tensile stress and fracture strength of 3D printed architectures are 0.96 MPa and 474%,respectively,and its self-healing efficiency is 74.8%.Additionally,the printed architectures can be employed as flexible electronic skin to monitor the movement of human fingers in a real-time way.

郭秋艳(1996-),女,硕士研究生,研究方向为柔性可拉伸材料与器件,374300090@qq.com