Molding Process
11 조회수
Product surface yellowing
문제 현상
The product color obviously darkens after processing
원인 분석
Processing temperature exceeding 370°C causes thermo-oxidation generating chromophores; material residence time too long accumulating thermal history
해결 방법
Reduce the melt temperature by 10-20°C to the safe window; reduce residence time; increase antioxidant dosage
핵심 요약
The yellowing of PES is a direct manifestation of thermo-oxidation
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