• 专利标题:   Preparing medical ethylene tetrafluoroethylene film by adding ethylene tetrafluoroethylene raw materials, functional additives, graphene, nucleating agents, antibacterial agents and antioxidants to high-speed mixer, mixing, heating, melt-extruding, melting, extruding, cooling, and vacuum drying.
  • 专利号:   CN113817259-A
  • 发明人:   XI W, HU Y
  • 专利权人:   FUJING NEW MATERIAL TECHNOLOGY SUZHOU CO
  • 国际专利分类:   C08J005/18, C08K003/01, C08K003/015, C08K003/04, C08K003/22, C08K005/00, C08L023/08
  • 专利详细信息:   CN113817259-A 21 Dec 2021 C08L-023/08 202213 Chinese
  • 申请详细信息:   CN113817259-A CN11021120 01 Sep 2021
  • 优先权号:   CN11021120

▎ 摘  要

NOVELTY - Method for preparing medical ethylene tetrafluoroethylene film, involves (a) adding ethylene tetrafluoroethylene raw materials, functional additives, graphene, nucleating agents, antibacterial agents and antioxidants to a high-speed mixer to mix evenly, (b) mixing the above-mentioned materials into a screw extruder, heating at 210-280degrees Celsius, melt-extruding to made into pellets, (c) adding the pellets to a hollow blow molding machine or a casting machine, melting, extruding to form a film of a specified thickness, cooling the formed film by a cooling roller at 90-100degrees Celsius, and vacuum drying, and (d) detecting, cooling, rewinding and re-detecting to obtain the film. USE - The method is useful for preparing medical ethylene tetrafluoroethylene film used for providing antibacterial properties against Staphylococcus aureus and Escherichia coli. ADVANTAGE - The method improves the transparency of the film, and the prepared film has excellent antibacterial effect, and high transparency, and prevents bacterial penetration.