Flexible strain sensors still face great challenges in combining high sensitivity, wide detection range, good mechanical stability and simple manufacturing processes into sensors. Herein, this paper reports a simple and low cost strain sensor fabricating method based on two-dimensional (2D) material (MXene) and ink, which can be large-scale fabricated into multiduty sensors with high sensitivity and excellent durability by spray-coated process and wrapped by nylon fabric. Owing to the fact that MXene has excellent dispersion in printing ink material, the sensor obtains low percolation threshold of 3.6 wt% and a percolation network based on Ti₃C₂T_x MXene/ink composites was precisely designed. The migration of the MXene lamination leads to a large change in resistance, while the ink coating restricts the large displacement of the nanometer lamella to maintain the connectivity of the conductive path in the large strain region. The strain sensing test shows that the MXene/ink encapsulated by nylon fabric strain sensor exhibits a high sensitivity (gauge factor of 27.2 and 170.9 under 0 %–25 % and 25 %–29.7 % strain, respectively), good linearity (R-Square >0.967), and excellent reliability and stability (>2950 cycles). The as-developed MXene/ink strain sensor was demonstrated to monitor real-time both tiny and large human activities, showing that it has great potential in the field of wearable strain sensor.

柔性应变传感器在将高灵敏度，宽检测范围，良好的机械稳定性和简单的制造工艺组合到传感器中方面仍面临巨大挑战。在此，本文报道了一种基于二维（2D）材料（MXene）和油墨的简单，低成本的应变传感器制造方法，该方法可以通过喷涂工艺大规模制造成具有高灵敏度和出色耐久性的多用途传感器。并用尼龙布包裹。由于MXene在印刷油墨材料中具有出色的分散性，因此该传感器的渗透阈值低至3.6 wt％，并且具有基于Ti ₃ C ₂ T _x的渗透网络MXene /油墨复合材料经过精确设计。MXene叠层的迁移会导致电阻发生较大变化，而油墨涂层会限制纳米薄片的大位移，从而在较大的应变区域内保持导电路径的连通性。应变传感测试表明，尼龙织物应变传感器封装的MXene /油墨具有很高的灵敏度（在0％–25％和25％–29.7％应变下的应变系数分别为27.2和170.9），良好的线性度（R平方） > 0.967）和出色的可靠性和稳定性（> 2950次循环）。事实证明，已开发的MXene /墨水应变传感器可以实时监视小型和大型人类活动，这表明它在可穿戴应变传感器领域具有巨大的潜力。