▎ 摘　　要

NOVELTY - Preparing flexible mechanical sensor based on graphene in-situ growth helical carbon fiber involves dissolving the graphene and polyvinyl pyrrolidone in water, stirring uniformly, adding hexahydrate nickel sulphate and urea, stirring uniformly, reacting for 1.5-2.5h under the condition of 150-200℃, sequentially, washing and drying to obtain the graphene loaded nano nickel hydroxide powder, heat-treating the graphene-loaded nano-nickel hydroxide powder obtained, cooling to room temperature, and making graphene-loaded nano-nickel oxide, heat treating the graphene-loaded nano-nickel oxide obtained, carrying out a cracking reaction, cooling down to room temperature to obtain graphene in-situ growth helical carbon fibers, coating the graphene in-situ growth spiral carbon fibre prepared on the substrate, drying to obtain the flexible mechanical sensor based on graphene in-situ growth spiral carbon fibre material. USE - Method for preparing flexible mechanical sensor based on graphene in-situ growth helical carbon fiber. ADVANTAGE - The flexible mechanical sensor prepared by the method has excellent conductivity and excellent flexibility, resistivity along with the linear change of pressure, is a flexible material with excellent performance, spiral carbon fiber is a carbon material with novel micro-structure, the shape is similar to spring, has special electrical performance and excellent mechanical property. By in-situ growing the spiral carbon fibre on the graphene, it not only has excellent performance of graphene and spiral fiber, but also can build new conductive network through special spiral structure of the spiral fiber. It has high sensitivity, good stability, and can be applied to the flexible electronic device. In order to realize preventing agglomeration graphene, the method adds polyvinyl pyrrolidone in the solution, at the same time, by means of microwave hydrothermal, obviously improves the dispersibility of the DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a flexible mechanical sensor based on graphene in-situ growth helical carbon fiber.