▎ 摘　　要

NOVELTY - The construction method of graphene surface fold involves (i) dispersing oxidized graphene powder in deionized water, ultrasonically dispersing to obtain oxidized graphene dispersion, (ii) placing a hollow spherical or cylindrical rubber polymer substrate in anhydrous ethanol, ultrasonically cleaning, drying, (iii) filling hollow spherical or cylindrical rubber polymer substrate with air, expanding to a predetermined degree of strain, fixing, (iv) coating an oxidized graphene dispersion on the surface of rubber polymer substrate, drying in air to obtain oxidized graphene coating. USE - Construction of graphene surface fold used in high sensitivity, low potential drive, long life strain sensor, and wearable intelligent equipment. ADVANTAGE - The method enables the construction of graphene surface fold with high folding degree, and excellent hydrophobic property, stretching property, and bending property. DETAILED DESCRIPTION - The construction method of graphene surface fold involves (i) dispersing oxidized graphene powder in deionized water, ultrasonically dispersing for more than 0.5 hour to obtain 0.2-8.0 mg/ml oxidized graphene dispersion, (ii) placing a hollow spherical or cylindrical rubber polymer substrate in anhydrous ethanol, ultrasonically cleaning for 10-60 minutes, drying at room temperature for more than 1 hour, (iii) filling hollow spherical or cylindrical rubber polymer substrate with air, expanding to a predetermined degree of strain, fixing, where the hollow spherical rubber polymer substrate circumferential pre-stretching strain is 20-500%, the hollow cylindrical rubber polymer substrate circumferential pre-stretching strain is 20-500%, and axial pre-stretching strain is 20-500%, (iv) uniformly coating an oxidized graphene dispersion on the surface of treated hollow spherical or cylindrical rubber polymer substrate, rotatably drying in air at 20-60 degrees C to obtain an oxidized graphene coating having a thickness of 0.2-20 mu m, (v) releasing the air in the hollow spherical or cylindrical rubber polymer substrate to obtain graphene oxide surface fold, and (vi) reducing the graphene oxide surface fold with hydrated hydrazine hydrate.