Material Analysis
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EVA tensile strength is insufficient
Fenómeno del problema
EVA product tensile strength is 15-20% below the standard value
Análisis de la causa
EVA molecular weight too low with insufficient strength foundation; poor filler interface not playing a reinforcing role; excessive orientation with strong longitudinal and weak transverse
Solución
1) Select high molecular weight EVA grade; 2) Treat filler with coupling agent to improve the interface; 3) Reduce orientation to decrease longitudinal-transverse differences
Conclusión clave
Insufficient tensile strength is caused by molecular weight and poor interface; selecting high MW grade is key
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