▎ 摘　　要

NOVELTY - Flexible stretchable conductive composite material, comprises a polymer elastic substrate and a piezoresistive porous material coated in the polymer elastic substrate, where the polymer elastic substrate is composed of two closable layers, a cavity is formed between the two layers to accommodate the piezoresistive porous material, the contact interface between the piezoresistive porous material and the polymer elastic substrate is bonded in point contact and can be completely desorbed, and the piezoresistive porous material wrapped in the polymer elastic substrate in a partially compressed state. USE - The flexible stretchable conductive composite material is useful for strain sensor in monitoring mechanical movement of subject (claimed). ADVANTAGE - The strain sensor of composite material: has tensile strain frequency of 200 Hz. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing flexible stretchable conductive composite material, comprising either (i) placing preformed piezoresistive porous material in cavity formed by two closed polymer elastic substrates, and making contact interface between the piezoresistive porous material and the polymer elastic substrate which realizing point-like contact that is completely desorbing, and wrapping the piezoresistive porous material in the polymer elastic substrate in partially compressed state, or (ii) forming the piezoresistive porous material on the surface of a layer of polymer elastic substrate, completely covering the piezoresistive porous material by second polymer elastic substrate, and forming point-like contact between the piezoresistive porous material and the polymer elastic substrate that is completely desorbing, and wrapping the piezoresistive porous material in the polymer elastic substrate in partially compressed state; train sensor prepared by composite material, comprising two layers of polymer elastic substrates and a piezoresistive porous material coated in the two layers of polymer elastic substrates, both ends of the polymer elastic substrate has flexible wires bonded by conductive electrode materials, and the two layers of the polymer elastic substrate are closed and packaged to obtain piezoresistive porous material-polymer composite material strain sensor; and preparing strain sensor, comprising preparing polymer elastic substrates and piezoresistive porous materials, coating layer of conductive electrode material on both ends of polymer elastic substrate and gluing flexible wires before combining the two layers of polymer elastic substrates, and packaging to obtain piezoresistive porous material-polymer composite material strain sensor.