Strain-insensitive yarn strain sensor and preparation method and application thereof

The invention relates to the technical field of strain sensors, in particular to a strain-insensitive yarn strain sensor and a preparation method and application thereof.The preparation method includes the steps that polyaniline nano-arrays grow on the surface of elastic covering yarn in situ to obtain polyaniline nano-array modified covering yarn; mXene nanosheets are deposited to obtain MXene/polyaniline nano-array modified covering yarns, then the MXene/polyaniline nano-array modified covering yarns are used as core yarns and skin layer yarns, and the strain insensitive yarn sensor with the double-wrapping structure is prepared through synchronous wrapping. The preparation method provided by the invention has the advantages of short process flow, simple method, cheap process, strong generalization, small environmental pollution, large elastic elongation, insensitive strain resistance, stable performance and the like. 本发明涉及应变传感器技术领域，具体涉及一种应变不灵敏纱线应变传感器及其制备方法和应用，所述制备方法是先在弹性包芯纱表面原位生长聚苯胺纳米阵列，以得到聚苯胺纳米阵列改性包芯纱，之后沉