Extrusion & Post
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PVDF Fluoropolymer Foam Extrusion
Problem Phenomenon
【Problem phenomenon】PVDF foamed cable extrusion shows uneven foaming and cell collapse, making weight reduction and performance hard to achieve together
Cause Analysis
The matching of blowing agent decomposition temperature and melt temperature, nucleation uniformity, and melt strength jointly determine cell quality; Arkema 2620 FC foaming masterbatch is specially designed for PVDF continuous extrusion to stabilize foaming
Solution
Select Kynar 2620 FC special foaming masterbatch and follow the recommended ratio; precisely match the foaming zone temperature to the blowing agent decomposition window; verify the balance between the weight reduction extent and mechanical property retention
Key Takeaway
PVDF foaming relies on special masterbatch and temperature window matching to stabilize cells; 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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