Material Drying
4 görüntüleme
Hydrolysis Bubbles and Silver Streaks in PC Products
Sorun Belirtisi
Bubbles and silver streaks appear on the surface and inside of PC transparent products.
Neden Analizi
PC is extremely sensitive to moisture; hydrolysis occurs when moisture >0.02%; at a processing temperature of 270-320°C, water molecules attack the carbonate bonds to produce CO₂, forming bubbles and silver streaks.
Çözüm
Strict drying: 120°C/4-6h, dew point ≤-35°C, moisture <0.02%; use a dehumidifying dryer, and convey sealed after drying.
Temel Çıkarım
PC drying is the first decisive factor for processing success or failure.
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!