Reinforced PA66 Import Substitution
Chinese brands: Zhejiang Huafeng, Jiangsu Huayang, Shanghai Pret, Kingfa. 20%-40% cheaper than imports (DuPont Zytel, BASF Ultramid). Key validation: thermal aging, creep, weld line strength.
PCABS Brittleness Causes
Main causes: insufficient drying (moisture >0.04%), high barrel temp (>280°C), poor compatibilization, low mold temp. Solutions: dry 80-90°C/3-4h, barrel 230-270°C, mold >60°C.
