▎ 摘　　要

NOVELTY - A polymeric thin-film material comprises 22-29 pts. wt. graphene, 24-33 pts. wt. polymer substrate, 33-39 pts. wt. natural starch, 12-17 pts. wt. functional monomer, 6-11 pts. wt. stearic acid, 4-9 pts. wt. paraffin, 11-16 pts. wt. polyvinyl alcohol, 8-14 pts. wt. sodium lauryl sulfate, 8-14 pts. wt. sodium carboxymethyl cellulose, 5-8 pts. wt. additive, 7-12 pts. wt. initiator, 14-18 pts. wt. lactic acid, 7-11 pts. wt. curing adhesive and 13-19 pts. wt. water. USE - Polymeric thin-film material. ADVANTAGE - The polymeric thin-film material: is harmless to environment; and has high flexibility, transparency and degradation rate, and excellent barrier property and mechanical property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the polymeric thin-film material, which involves: (A) adding graphene and sodium carboxymethyl cellulose to polyvinyl alcohol, then introducing the mixture into an ultrasonic disperser and dispersing for 30-40 minutes to obtain a material (I); (B) mixing high-molecular base material, functional monomer, paraffin and initiator into material mixer, heating and stirring at 80-90 degrees C, and again mixing for 30-40 minutes to obtain a material (II); (C) mixing natural starch, lactic acid and water, introducing mixed mixture into a stirrer, stirring at a speed of 200-300 rpm for 20-40 minutes, then adding sodium lauryl sulfate, stearic acid and additive, and continuously stirring at 55-65 degrees C for 30-40 minutes to obtain a mixed emulsion; (D) introducing material (I), material (II) and mixed emulsion into a high-mixing machine, mixing and stirring at a temperature of 60-70 degrees C and a speed of 600-800 rpm for 1-2 hours to obtain a material (III); and (E) introducing the material (III) and curing adhesive into an extruder for melt extrusion, then introducing into a mold, removing gas bubbles under the pressure intensity of 3-5 MPa, and then carrying out blow molding and stretching process.