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EVOH product dimensional change during long-term storage

Material Analysis EVOH dimensional stability physical aging annealing secondary crystallization slight crosslinking

EVOH and filler interfacial bonding is poor

Material Analysis EVOH filler interfacial bonding coupling agent compatibilizer filler dispersion

EVA flexural modulus is low

Material Analysis EVA flexural modulus rigid filler nucleating agent crystallinity

EVA toughness is insufficient with brittle fracture

Material Analysis EVA insufficient toughness molecular weight crosslinking control crystallization refinement

EVA creep deformation is large

Material Analysis EVA creep slight crosslinking high molecular weight rigid filler

EVA processing temperature fluctuates

Material Analysis EVA temperature fluctuation PID calibration heater band thermocouple

EVA tensile strength is insufficient

Material Analysis EVA tensile strength molecular weight coupling agent orientation control

EVA hardness is too high

Material Analysis EVA high hardness crystallinity filler amount plasticizer

EVA elongation at break is low

Material Analysis EVA elongation at break molecular weight orientation control crosslinking degree

EVA heat-sensitive decomposition and yellowing

Material Analysis EVA thermal decomposition deacetylation yellowing heat stabilizer temperature control

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