The present invention discloses an antibacterial, flame-retardant, water-resistant polyurethane elastomer and its preparation method. The antibacterial, flame-retardant, water-resistant polyurethane elastomer comprises the following raw materials by weight: thermoplastic polyurethane 50-80 parts; halogen-free zinc salt flame retardant 20-30 parts; antibacterial agent 0-10 parts; anti-drip agent 0-5 parts; other additives 0–3 parts; the preparation method comprises the following steps: 1) Weighing various raw materials according to weight parts; 2) Placing the thermoplastic polyurethane into an oven for treatment; 3) Mixing the treated thermoplastic polyurethane with the zinc salt halogen-free flame retardant, antibacterial agent, anti-drip agent, and other additives in a mixer; 4) Feed the mixed raw materials into a twin-screw extruder for extrusion and pelletization. The antimicrobial, flame-retardant, water-resistant polyurethane elastomer of this invention exhibits excellent flame-retardant properties, long-lasting antimicrobial effects meeting military standard Grade 0 mold resistance requirements, halogen-free environmental friendliness, and passes the 80°C 7-day water boiling test. It is widely applicable in military, marine engineering, and other fields.
Country Code: CN
Application Number: CN202211235410.5
