Molding Process
2 مشاهدة
EMA surface stress whitening
ظاهرة المشكلة
Stress whitening appears on the surface of stressed areas of EMA products, affecting appearance and strength
تحليل الأسباب
Under local stress, EMA molecular orientation causes refractive index differences and whitening; areas of internal stress concentration in the product
الحل
1) Reduce injection speed to reduce orientation stress; 2) Annealing treatment at 80°C/2h to release stress; 3) Product design avoids stress-concentrating sharp corners
الخلاصة الأساسية
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are key
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