▎ 摘　　要

NOVELTY - Manufacture of strain sensor material involves (i) immersing a stretchable material in a swelling solvent to expand pores of the stretchable material, (ii) mixing a conductive material with a dispersion solvent comprising dimethylformamide and deionized water and dispersing the conductive material and the dispersion solvent by tip sonication to obtain a conductive material dispersion, (iii) immersing the stretchable material with expanded pores in the conductive material dispersion so that the conductive material in the conductive material dispersion is inserted into the pores of the stretchable material or attached to the surface of the stretchable material, and (iv) drying. USE - Manufacture of material used for forming fabric-structured sensor used in strain sensor device (all claimed) for detecting multiaxial strain. ADVANTAGE - The method enables manufacture of material having high elasticity. In the material, a nanomaterial impregnation layer having a thickness of several micrometers may be formed on a polymer surface, and a stable conductive network can be formed even with a low content of nanomaterials without deterioration of inherent elasticity and flexibility of the polymer. The material enables manufacture of fabric-structured strain sensor with improved productivity. The sensor is capable of detecting multiaxial strain with high sensitivity, so that the motion of a human body or a robot can be accurately measured, and has excellent flexibility. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: the strain sensor material, which comprises the stretchable material, and the conductive material penetrated into the pores of the stretchable material or attached to the surface of the stretchable material. The conductive material is impregnated to a depth of 1-100 μ m from the surface of the stretchable material; and a fabric-structured strain sensor, which is woven by alternately crossing warp and weft yarns comprising the strain sensor material.