Material Analysis
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PAR recycling challenges
Problem Phenomenon
PAR recycling and re-pelletizing is difficult, and the quality declines with each thermal history.
Cause Analysis
Repeated high-temperature heating degrades the molecular chains, decreases the molecular weight, and changes the color.
Solution
Promote virgin use to reduce recycling dependence; control the ratio during recycling, such as 30%.
Key Takeaway
PAR mechanical recycling is limited.
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