Material Drying
6 مشاهدة
Performance decline of products after adding PET recycled material
ظاهرة المشكلة
After adding crushed recycled PET bottle flake, product impact strength decreases by 20-40% and color turns yellow.
تحليل الأسباب
Recycled material undergoes molecular chain degradation through multiple thermal histories and IV decreases; it is mixed with impurities such as label adhesives; insufficient drying causes hydrolytic degradation.
الحل
Control the recycled material proportion to ≤30%; fully wash to remove impurities; add chain extenders to restore IV; strengthen drying.
الخلاصة الأساسية
PET recycling requires controlling the addition proportion and taking quality restoration measures.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!