The present invention discloses an expandable polypropylene bead material for packaging and a preparation method thereof, relating to the technical field of polymer materials. In the preparation of the expandable polypropylene bead material for packaging, palygorskite is successively immersed in zinc sulfate and sodium carbonate to prepare zinc-loaded palygorskite, and the zinc-loaded palygorskite is successively reacted with (N,N-dimethyl-3-aminopropyl)trimethoxysilane and epichlorohydrin to prepare modified zinc-loaded palygorskite; amino silicone oil is reacted with diallyl chlorophosphite to prepare modified amino silicone oil; polypropylene pellets, modified zinc-loaded palygorskite, modified amino silicone oil, azodicarbonamide, nano-zinc oxide and benzophenone are extruded and pelletized by a twin-screw extruder, and then foamed after ultraviolet irradiation to obtain the expandable polypropylene bead material for packaging. The expandable polypropylene bead material for packaging prepared by the present invention has excellent antibacterial and flame-retardant properties.
Country Code: CN
Application Number: CN202410642612.4
