Extrusion & Post
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POE internal delamination cracking
Problem Phenomenon
POE product internal delamination, cracking along the interface
Cause Analysis
POE and incompatible filler or blend component interfacial adhesion poor; cooling shrinkage difference causes interlayer stress
Solution
1) Use compatibilizer to improve interfacial adhesion; 2) Uniform cooling to reduce interlayer stress; 3) Reduce incompatible component addition
Key Takeaway
Internal delamination is caused by poor interface and shrinkage difference; compatibilizer and uniform cooling are key
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