Processing Machinery
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Chain Extender Application for PLA Products
Problembeschreibung
Low molecular weight and poor processability.
Ursachenanalyse
Processing degradation reduces the molecular weight; chain extenders can rebuild molecular chains and increase melt strength.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Lösung
①Add epoxy-type chain extenders (such as Joncryl); ②Reactive extrusion process; ③Verify molecular weight recovery; ④Optimize the addition amount.; After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
Chain extenders are a dual tool for PLA processing remediation and enhancement.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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