Production & Quality
6 مشاهدة
PETG product yellowing
ظاهرة المشكلة
PETG transparent products show a pale yellow tone, and transparency and visual quality decline.
تحليل الأسباب
Processing temperature too high (over 260°C) causing thermal degradation and thermal oxidation, material residence time too long, antioxidant insufficient, too much regrind.
الحل
Strictly control temperature ≤250°C; shorten the molding cycle; add antioxidant formulation; control the regrind ratio ≤20%.
الخلاصة الأساسية
PETG yellowing is a manifestation of thermal degradation; temperature and time management is the key to prevention.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!