The present invention discloses a devolatilization process for high-melt-index, high-transparency lithium-based polymer melt.
This process employs falling film evaporation for preliminary evaporation, followed by deep devolatilization using a twin-screw extruder, with volatile solvents recovered via condensation.
The devolatilized polymer melt undergoes screw extrusion, underwater pelletizing, and centrifugal dehydration to produce finished polymer pellets.
This method is applicable for devolatilizing high-melt-index, high-transparency, low-moisture lithium-based polymer melt solutions.
The resulting polymer exhibits a volatile content ≤0.5% (mass fraction) and appears as granular or flake-like pellets, facilitating downstream processing applications.
The process is simple, cost-effective, and can be implemented using existing mature equipment and techniques, ensuring ease of control and industrial scalability.
Country Code: CN
Application Number: CN202310750996.7
