Thermal insulation strain sensing yarn and preparation method and application thereof

The invention relates to a heat insulation strain sensing yarn and a preparation method and application thereof, and belongs to the technical field of intelligent textiles. The preparation method of the thermal insulation strain sensing yarn comprises the following steps: S1, weaving conductive yarn on the surface of elastic yarn to obtain elastic conductive composite yarn; the elastic yarns are kept in a natural stretching state in the weaving process; s2, the surface of the elastic conductive composite yarn is coated with heat insulation fibers in a friction spinning mode, the heat insulation strain sensing yarn is obtained, and the elastic conductive composite yarn is kept in a natural stretching state in the coating process. The middle layer and the outer layer of the heat insulation strain sensing yarn are respectively composed of the conductive yarn and the heat insulation fiber, so that the heat insulation strain sensing yarn has good sensing performance and good heat insulation performance, and still