Production & Quality
13 مشاهدة
Performance decay of EVA with repeated processing
ظاهرة المشكلة
After 3-4 recycling and reprocessing cycles, EVA tensile strength declines 25-30%
تحليل الأسباب
Molecular chains break and degrade under repeated high temperature shear; antioxidant exhausted in multiple processing; cumulative effect of thermo-mechanical degradation
الحل
1) Recycled material ratio not exceeding 20-30%; 2) Supplement 0.1-0.2wt% antioxidant at each re-extrusion; 3) Lower processing temperature by 5-10°C; 4) Lower screw speed to reduce shear
الخلاصة الأساسية
Performance decay from multiple processing is caused by thermo-mechanical degradation; limiting recycled material and supplementing antioxidant are key
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!