Extrusion & Post
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DSTDP internal delamination cracking
Problem Phenomenon
DSTDP product interior delaminates, cracking along the interface
Cause Analysis
DSTDP has poor interfacial bonding with incompatible filler or blend components; cooling shrinkage differences cause interlayer stress
Solution
1) Use compatibilizer to improve interfacial bonding; 2) uniform cooling to reduce interlayer stress; 3) reduce the addition amount of incompatible components
Key Takeaway
Internal delamination is caused by poor interface and shrinkage difference; compatibilizer and uniform cooling are key
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