Material Analysis
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POM regrind recycling degradation
Problem Phenomenon
POM regrind degrades severely after multiple mechanical recyclings and cannot be used.
Cause Analysis
Repeated processing thermal history of POM causes continuous release of formaldehyde and a sharp decrease in molecular weight.
Solution
Strictly control the number of times the regrind is used (no more than 2 times); add formaldehyde scavengers and stabilizers.
Key Takeaway
POM recycling is limited.
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