Molding Process
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POM has excellent creep resistance but is notch sensitive
Fenómeno del problema
Although POM is creep resistant, its notched impact strength is low.
Análisis de la causa
POM has regular molecular chains and high crystallinity, but the stress concentration effect at notches is obvious and the impact is low.
Solución
Avoid sharp corners and notches in design; fillet transitions; use toughened POM grades.
Conclusión clave
POM notch sensitivity is a design safety factor requirement.
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