▎ 摘　　要

NOVELTY - A nano-antibacterial masterbatch is prepared by configuring graphene oxide and deionized water to form suspension, ultrasonically dispersing at 5000-20000 Hz for 0.1-1 hour, adding tetraethoxysilane, adjusting pH of solution to 8-10, stirring, filtering, washing and drying to obtain silica/graphene oxide nanomaterial, mixing deionized water, the silica/graphene oxide nanomaterial, pyrrolidone solution, and sodium borohydride solution, ultrasonically dispersing, adding silver nitrate solution to react, filtering obtained suspension, washing and drying to obtain silver/silica/graphene oxide nanomaterial, mixing silver/silica/graphene oxide nanomaterial with coupling agent and cooling to room temperature to obtain surface-modified silver/silica/graphene oxide nanomaterial, mixing the surface-modified silver/silica/graphene oxide nanomaterial with polyethylene powder to obtain mixed powder, using double-screw extruding granulator to heat the mixed powder, extruding, cooling and cutting USE - Nano-antibacterial masterbatch. ADVANTAGE - The nano-antibacterial masterbatch has excellent product barrier property, high stability and excellent bacteriostatic effect. DETAILED DESCRIPTION - A nano-antibacterial masterbatch is prepared using graphene oxide, deionized water, tetraethoxysilane, pyrrolidone solution, sodium borohydride solution, silver nitrate solution, coupling agent and polyethylene powder, and by configuring graphene oxide and deionized water to form suspension, ultrasonically dispersing at 5000-20000 Hz for 0.1-1 hour, adding tetraethoxysilane, adjusting pH of solution to 8-10, stirring at 70-100 rpm for 0.5-3 hours, filtering, washing and drying to obtain silica/graphene oxide nanomaterial, mixing deionized water, the silica/graphene oxide nanomaterial, pyrrolidone solution, and sodium borohydride solution, ultrasonically dispersing for 0.1-1 hour at 5000-20000 Hz, adding silver nitrate solution to react under stirring speed of 70-100 rpm at 50-100degrees Celsius for 1-5 hours, filtering obtained suspension, washing and drying to obtain silver/silica/graphene oxide nanomaterial, mixing silver/silica/graphene oxide nanomaterial with coupling agent at 60-90degrees Celsius for 5-30 minutes and cooling to room temperature to obtain surface-modified silver/silica/graphene oxide nanomaterial, mixing the surface-modified silver/silica/graphene oxide nanomaterial with polyethylene powder at 500-750 rpm for 15-30 minutes to obtain mixed powder, using double-screw extruding granulator to heat the mixed powder to 150-200degrees Celsius after melting, extruding, cooling and cutting.