Processing Machinery
2 Aufrufe
PBAT poor compatibility with PLA
Problembeschreibung
The PBAT/PLA blend system has poor compatibility, obvious phase separation, and limited improvement in mechanical properties.
Ursachenanalyse
Molecular polarity difference between PBAT and PLA; thermal degradation during processing produces reactive functional groups; weak phase interface bonding; insufficient chain extender.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Lösung
①Add chain extender (ADR etc.) which also acts as a compatibilizer; ②optimize processing temperature to reduce degradation; ③compatibilizer selection; ④blending process optimization.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
PBAT/PLA compatibility requires chain extender compatibilization; temperature management reduces degradation; compatibilization and chain extension are dual functions.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!