| abstract |
The present application relates to a degradable PLA/PBAT extruded foamed bead and a preparation method thereof, comprising the following steps: (1) adding polylactic acid PLA, polybutylene terephthalate PBAT, chain extender and The raw materials of the nucleating agent are mixed to obtain a premix; (2) the premix obtained in (1) is dried and mixed with a foaming agent, foamed, extruded, and cut to obtain the PLA/PBAT Foam beads. It can continuously complete the steps of mixing, granulation, dicing and foaming in a series extrusion system without waste water discharge. Single problem of bubble structure. The extruded foamed beads of degradable PLA/PBAT have a foaming ratio as high as 15-40 times, and the bead shape can be one of capsule-shaped, spherical, strip-shaped, column-shaped or dumbbell-shaped foamed beads or more. |