Production & Quality
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PVDF and PFA Selection Confusion
Problem Phenomenon
【Problem phenomenon】Misuse of PVDF in high-temperature or ultra-pure occasions causes deformation or contamination, and misuse of PFA in cost-sensitive occasions causes waste
Cause Analysis
PFA withstands 260℃ and has extremely high purity, suitable for semiconductor ultra-pure systems; PVDF withstands about 150℃ but has better rigidity, wear resistance, and cost, suitable for industrial corrosion-resistant pipelines; the positioning difference between the two is clear
Solution
Select material according to temperature and purity requirements: choose PFA for above 150℃ or semiconductor ultra-pure, and PVDF for industrial corrosion-resistant pressure-bearing below 150℃; conduct a full life cycle evaluation combining cost and performance
Key Takeaway
PVDF and PFA are selected by the boundary of temperature and purity, and 150℃ is the key watershed; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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