Material Drying
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Residual Acetaldehyde from Improper Drying in PBT '2079851475616104452
Problem Phenomenon
PBT products have a residual aldehyde odor after processing.
Cause Analysis
The drying temperature is too high or the time is too long, causing PBT thermal degradation; the processing temperature is too high, producing aldehyde decomposition products.
Solution
Control the drying temperature at 120°C, not exceeding 130°C; reduce the processing temperature; shorten the residence time.
Key Takeaway
PBT aldehyde odor affects the use experience.
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