The invention discloses a moisture-proof and antibacterial bamboo charcoal brush filament, its preparation method and application in toothbrushes, belonging to daily necessities technology. The preparation steps: Mix polybutylene terephthalate (PBT) with functional additives, melt-extrude and granulate in a twin-screw extruder to prepare masterbatch; melt-spin the masterbatch in a spinning machine and cool to form bamboo charcoal brush filaments. Functional additives undergo melt grafting reaction with PBT, which not only endows the filament with excellent moisture resistance and antibacterial property, but also improves mechanical performance. When applied to toothbrushes, the product shows good anti-fuzzing, antibacterial and damp-proof effects.
Country Code: CN
Application Number: CN202411058003.0
