Production & Quality
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PPSU product internal stress cracking
Fenómeno del problema
PPSU products stress crack during use or sterilization.
Análisis de la causa
PPSU has high modulus, generates internal stress during processing and is relatively sensitive to stress cracking, especially in sterilization environments.
Solución
Increase mold temperature to 160-180°C; anneal at 200-220°C/1-2h.
Conclusión clave
PPSU internal stress control is a long-term reliability requirement.
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