Material Drying
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AEPDS drying management
Problem Phenomenon
AEPDS product silver streaks and bubbles, insufficient or excessive drying, improper hygroscopicity management.
Cause Analysis
AEPDS hygroscopicity refers to ABS level; EPDM rubber phase influence; drying temperature and time need to match; excessive drying affects rubber phase; moisture content control.
Solution
①Dry at 80-90℃×3-4 hours; ②verify moisture content <0.1%; ③avoid excessive drying; ④sealed storage.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
AEPDS drying management refers to ABS but needs adjustment; verification ensures quality; prevent both excess and insufficiency.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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