Molding Process
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Large EVOH Impact Strength Fluctuation
Fenómeno del problema
EVOH product impact strength fluctuates ±30%, unstable
Análisis de la causa
EVOH dispersed phase particle size fluctuates 0.2-1μm causing unstable toughening effect; crystallinity fluctuation affects impact
Solución
1) Stabilize processing conditions to ensure consistent dispersed phase particle size; 2) Nucleating agent to control crystallinity; 3) Raw material batch consistency control
Conclusión clave
Impact fluctuation is caused by unstable dispersed phase and crystallization; stable processing is key
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