Molding Process
7 조회수
PPS discoloration (browning)
문제 현상
During PPS processing, the color changes from natural light yellow to dark brown or black.
원인 분석
Excessive processing temperature or too long residence time causes PPS oxidative crosslinking and browning.
해결 방법
Strictly control temperature <340°C; shorten residence time; use nitrogen protection when necessary.
핵심 요약
The root cause of PPS discoloration from over-processing lies in oxidation.
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