Molding Process
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Stress cracking of PAR products
Problembeschreibung
Cracks appear in the product during use or when contacting chemicals.
Ursachenanalyse
The molding cooling is fast and the internal stress is large; PAR has a stress cracking tendency to alkaline and polar solvents.
Lösung
Raise the mold temperature to 120-160°C; fully anneal at 150-170°C/2-4h; avoid contact with sensitive chemicals.
Wichtigste Erkenntnis
PAR stress management is the foundation of high-reliability applications.
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