Injection Molding
11 조회수
Yellowing in PCTG '2079851475616104452
문제 현상
The product color changes from transparent to yellow.
원인 분석
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.
해결 방법
Control the temperature ≤250°C; shorten the residence time; fully dry; control the regrind ≤25%.
핵심 요약
PCTG yellowing is a signal of degradation.
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