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Internal delamination cracking of PU
Fenómeno do problema
Internal delamination of PU products, cracking along the interface
Análise das causas
Poor interfacial bonding between PU and incompatible fillers or blend components; cooling shrinkage difference causing interlayer stress
Solução
1) Use compatibilizer to improve interfacial bonding; 2) Uniform cooling to reduce interlayer stress; 3) Reduce the addition amount of incompatible components
Conclusão principal
Internal delamination is caused by poor interface and shrinkage difference; compatibilizer and uniform cooling are key
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