目的 调整液态金属基油墨的印刷适性，用于可拉伸电极的印刷法构建。方法 通过超声破碎法减小液态金属微粒直径，降低其表面张力;探究聚氨酯种类和含量对液态金属微粒的分散性、油墨流变性、电极的印刷适性和可拉伸性的影响。结果 引入PU1185制备的液态金属油墨，丝印电极分辨率达58 µm;印制电极展现了良好的导电性和可拉伸性，预拉伸稳定后的电极在100%的应变下拉伸1 000次，电阻变化不超2倍。结论 液态金属基油墨能够用于高分辨电路的加工，在可拉伸电子领域具有可预见的应用前景。

The work aims to adjust the printability of liquid metal based inks and apply it to develop the printing method of stretchable electrodes. The diameter and surface tension of liquid metal particles were reduced by ultrasonic crushing. The effects of different types and contents of polyurethane on the dispersibility of liquid metal particles, ink rheology, and the printability and stretchability of printed electrodes were investigated. The liquid metal ink prepared by introducing PU1185 could achieve an electrode resolution of 58 µm through screen printing. The printed electrode exhibited good conductivity and stretchability. After pre-stretching and stabilizing, the electrode could be stretched 1 000 times under 100% strain, and its resistance change did not exceed 2 times. Liquid metal-based inks can be used for high-resolution circuit processing, which also indicates that liquid metal-based inks have foreseeable broad application prospects in stretchable electronics.