▎ 摘　　要

NOVELTY - Preparing flexible piezoresistive composite material involves ultrasonically mixing graphene oxide, nano-zinc oxide and normal hexane to obtain solution A. The copper nanoparticles and the copper hexane are ultrasonic blended for 10-20 hours, and then stirred for 20-40 hours to obtain a solution B. The organic silicone rubber and the hexane for 15-25 minutes and then stirring to obtain the solution C. The solution A and solution B are added to solution C according to 5-15 milliliters/minute (ml/min) titration speed, stirred for 1.5-2.5 hours and then stored under vacuum condition for 0.5 -1.5 hour. USE - Method for preparing a flexible piezoresistive composite material is useful in a pressure sensor for converting the pressure signal into electric signal output, and in industry and science and research fields. ADVANTAGE - The flexible piezoresistive composite material has high sensitivity, stable signal change, hysteresis performance, cyclic stability, has strong high temperature resistance, and has prominent advantages in industrialization and practical application. The method uniformly mixes the composite sensing material graphene oxide and nano-zinc oxide by solution blending method with flexible substrate material silicon rubber, thus greatly reducing the manufacturing cost of the material, and providing possibility for commercial application of the flexible sensor. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for performing screen printing process applying the flexible piezoresistive composite material, which involves: (a) printing a layer of conductive silver paste on the FPC board by screen printing, using a 150 mesh screen, the angle between the squeegee and the screen during printing is 75°, and naturally air drying the silver paste at room temperature, the drying time is 10 minutes; and (b) printing the piezoresistive composite material by screen printing on the FPC board printed with the silver paste, using a 150-mesh screen, the angle between the squeegee and the screen is 75° during printing, and drying. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graph showing the performance test results of the piezoresistive composite material. (Drawing includes non-English language text).