The invention relates to the technical field of polymer materials, and discloses a polymer antibacterial material and a preparation method thereof. The invention obtains the polymer antibacterial material by adding polyethylene, maleic anhydride-grafted polyethylene and quaternary ammonium salt-modified polyurethane into a twin-screw extruder for blending and extrusion. During extrusion, terminal hydroxyl groups in the quaternary ammonium salt-modified polyurethane react with anhydride groups in the maleic anhydride-grafted polyethylene, improving compatibility with polyethylene and forming crosslinking to make the connection tighter and enhance mechanical properties. Quaternary ammonium salt groups and quaternary phosphonium salt groups in the quaternary ammonium salt-modified polyurethane have good antibacterial effects and exert synergistic antibacterial activity. Silicon, phosphorus and triazine groups in the quaternary ammonium salt-modified polyurethane jointly form an antibacterial system for synergistic antibacterial action.
Area Code: CN
Application Number: CN202411589008.6
