▎ 摘　　要

NOVELTY - High-strength flexible sensor material comprises 100 pts. wt. polyol, 5-50 pts. wt. isocyanate, 1-20 pts. wt. conductive agent, 0-20 pts. wt. chain extender, 0-10 pts. wt. catalyst, 0-10 pts. wt. antioxidant and 0-10 pts. wt. anti-UV agent. The weight average molecular weight of the polyol is 300-8000. The functionality is 2-4. The isocyanate is an isocyanate with a functionality of 2. The conductive agent is =conductive carbon black, graphite, conductive carbon fibers, carbon nanotubes, conductive whiskers, graphene, fullerene or metal-based conductive particle. The chain extender is an amine chain extender and a hydroxy compound chain extender with a functionality of 2-4. USE - The sensor material is useful for wear-resistant smart sensors with high tear strength requirement. ADVANTAGE - The composite material has high tear strength, wear resistance and small permanent deformation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a high-strength flexible sensor material comprising (S1) dehydrating the polyol to a moisture content of less than 0.03 wt.%, adding 70-80 wt.% polyol to isocyanate, and stirring and reacting at a temperature of 30-100degrees Celsius for 0.5-5 hours to obtain a prepolymer, (S2) adding the conductive agent to the remaining polyol, grinding, dispersing it for 0.5-5 hours, adding chain extender, catalyst, antioxidant and anti-UV agent, and stirring to form a conductive dispersion, (S3) evenly mixing the prepolymer and conductive dispersion, pouring into a mold kept at 80-120degrees Celsius and vulcanizing to obtain a high-strength flexible sensor material.