Injection Molding
12 görüntüleme
Yellowing in PCTG '2079851475616104452
Sorun Belirtisi
The product color changes from transparent to yellow.
Neden Analizi
The processing temperature is too high, causing thermal degradation, the residence time is too long, the raw material is insufficiently dried, and too much regrind is used.
Çözüm
Control the temperature ≤250°C; shorten the residence time; fully dry; control the regrind ≤25%.
Temel Çıkarım
PCTG yellowing is a signal of degradation.
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