Preparation method of PDMS sponge-based strain sensor material

The invention belongs to the field of flexible electronic materials, in particular to a preparation method of a PDMS sponge-based strain sensor material. The preparation process comprises the following steps: firstly, white granulated sugar and soft white sugar which are common in life are used as raw materials to prepare cube sugar; then PDMS sponge is prepared by taking cube sugar as a sacrificial template; sequentially dip-coating PDMS sponge into the chitosan solution and the graphene oxide dispersion liquid is carried out, and RGO/PDMS sponge is prepared by reducing of using a reducing agent ascorbic acid; finally a layer of silver nanowires (AgNWs) is applied to the RGO/PDMS sponge by using a dispensing method, and drying is conducted to prepare the AgNWs/RGO/PDMS sponge strain sensor material. The strain sensor material disclosed by the invention has good conductivity, the resistance can be obviously changed in compressive strain, meanwhile, the strain sensor material has excellent compression cycle st