Extrusion & Post
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PVA internal delamination cracking
Fenómeno del problema
PVA product interior delaminates and cracks along the interface
Análisis de la causa
Poor interfacial bonding between PVA and incompatible filler or blend components; cooling shrinkage differences cause interlayer stress
Solución
1) Use compatibilizer to improve interfacial bonding; 2) Uniform cooling to reduce interlayer stress; 3) Reduce the amount of incompatible components added
Conclusión clave
Internal delamination is caused by poor interface and shrinkage difference; compatibilizer and uniform cooling are the key
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