Molding Process
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DSTDP surface stress whitening
Problembeschreibung
DSTDP product surface stress whitening in stressed regions, affecting appearance and strength
Ursachenanalyse
Under local stress, DSTDP molecular orientation causes refractive index difference and whitening; product internal stress concentration regions
Lösung
1) Reduce injection speed to reduce orientation stress; 2) annealing treatment 80°C/2h to release stress; 3) product design to avoid stress concentration sharp corners
Wichtigste Erkenntnis
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are key
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