▎ 摘　　要

NOVELTY - The sensor has an outer sleeve (2) for wrapping a composite material (1) with large-deformation and high rebound performance and conductivity. Resistivity of a core changes nearly and linearly with tensile strain due to changes in composite material sectional size and length. The composite material is obtained by uniformly dispersing conductive material in liquid pouring sealant. A ratio of the conductive material in the strain sensor is greater than 4 % and less than 6 %. The conductive material includes carbon black, carbon nano tube and graphene. The liquid pouring sealant comprises Dow Corning 184, Dow Corning 527 and Ecoflex. The material used by high resilience coating comprises latex, rubber and modified conductive silica gel. USE - Large-strain and high-linearity resistance strain sensor for use as an information sensing and collecting tool in flexible electronic and flexible sensing fields. Uses include but are not limited to information, energy, medical and national defense fields. ADVANTAGE - The modified conductive silica gel has better conductivity and large deformation ability. The sensor makes a high-elastic insulating latex tube to be coated at an outer side of the modified conductive silica gel to provide better rebound performance and protection performance. The sensor can bear strain to maintain stable performance while making resistance change of the sensor exhibits better linear relationship. The sensor maintains path, resistance change and strain to exhibit high linearity under the condition of large strain. The sensor can be used repeatedly, and has better recycling performance. The sensor is simple to prepare and flexible to use, and selects different shape materials as an auxiliary rebound sleeve with the conductive composite material according to different use working departments. The sensor selects multiple electrodes to satisfy different mounting and testing environments. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a large-strain and high-linearity resistance strain sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a large-strain and high-linearity resistance strain sensor. Composite material (1) Outer sleeve (2) Carbon-based conductive powder particles (101) Pouring sealant substrate (102)