Material Drying
5 مشاهدة
Gel Particles in PCTG Extruded Sheets
ظاهرة المشكلة
Visible particles (gel particles) appear in PCTG extruded sheets, with poor appearance.
تحليل الأسباب
High-melting-point impurities or cross-linked gel are mixed into the raw material, the material stays too long in the screw dead corners and degrades, and the drying temperature is too high, producing prepolymers.
الحل
Use 80-120μm filter screens; optimize the screw combination; control the drying temperature ≤70°C; clean the screw regularly.
الخلاصة الأساسية
PCTG gel particles originate from impurities and degradation products.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!