Molding Process
7 조회수
PPSU product yellowing and browning
문제 현상
PPSU transparent amber products further darken and turn brown after processing.
원인 분석
Excessively high processing temperature or excessively long residence time causes thermo-oxidative degradation and color deepening.
해결 방법
Control barrel at 340-360°C (low limit); nitrogen protection; shorten residence.
핵심 요약
Although PPSU is ultra-high temperature stable, it still has a degradation boundary.
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