▎ 摘　　要

NOVELTY - Method for preparing an organic-inorganic hybrid double conductive network polyvinyl alcohol composite hydrogel, involves (a) under the condition of heating and stirring, dissolving polyvinyl alcohol (PVA) into deionized water to prepare PVA aqueous solution, (b) adding the inorganic conductive material to the PVA aqueous solution and dispersing it evenly by physical ball milling to prepare the conductive PVA aqueous solution, (c) adding ferric chloride solution to the conductive PVA aqueous solution, stirring evenly, adding pyrrole monomer, and under the condition of certain temperature and continuous stirring, making the monomer pyrrole polymerize in situ in PVA to form polypyrrole, to prepare double conduction network PVA aqueous solution, and (d) adding a certain amount of crosslinking agent to the double conductive network PVA aqueous solution under the condition of certain temperature and continuous stirring, and reacting to prepare the composite hydrogel. USE - Method for preparing an organic-inorganic hybrid double conductive network polyvinyl alcohol composite hydrogel used in the application of wearable flexible sensing. ADVANTAGE - The method is simple to operate, and the intermediate product does not produce toxic substances. The prepared composite hydrogel has the characteristics of non-toxicity, environmental protection, excellent stretchability, high conductivity, strong adhesion performance and rapid self-healing. DETAILED DESCRIPTION - Method for preparing an organic-inorganic hybrid double conductive network polyvinyl alcohol composite hydrogel, involves (a) under the condition of heating and stirring, dissolving polyvinyl alcohol (PVA) into deionized water to prepare PVA aqueous solution, (b) adding the inorganic conductive material to the PVA aqueous solution and dispersing it evenly by physical ball milling to prepare the conductive PVA aqueous solution, (c) adding ferric chloride solution to the conductive PVA aqueous solution, stirring evenly, adding pyrrole monomer, and under the condition of certain temperature and continuous stirring, making the monomer pyrrole polymerize in situ in PVA to form polypyrrole, to prepare double conduction network PVA aqueous solution, and (d) adding a certain amount of crosslinking agent to the double conductive network PVA aqueous solution under the condition of certain temperature and continuous stirring, and reacting for a period of time to prepare the organic-inorganic hybrid double conductive network polyvinyl alcohol composite hydrogel.