Production & Quality
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POE surface microcracks
Problem Phenomenon
POE product surface shows 0.05-0.2mm microcracks, affecting appearance and strength
Cause Analysis
POE product internal stress too large, exceeding material yield stress; environmental stress cracking; product design stress concentration
Solution
1) Annealing treatment to release internal stress; 2) Product design to avoid sharp corners and stress concentration; 3) Select high molecular weight POE to improve crack resistance
Key Takeaway
Microcracks are caused by excessive internal stress; annealing and crack-resistant design are key
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