Production & Quality
4 조회수
MP performance degradation after repeated processing
문제 현상
MP tensile strength decreases 25-30% after 3-4 recycling/reprocessing cycles
원인 분석
molecular chains break and degrade under repeated high-temperature shear; antioxidants exhausted in multiple processing; cumulative effect of thermo-mechanical degradation
해결 방법
1) recycled material ratio not exceeding 20-30%; 2) replenish 0.1-0.2wt% antioxidant at each re-extrusion; 3) lower processing temperature 5-10°C; 4) reduce screw speed to reduce shear
핵심 요약
performance degradation from multiple processing is caused by thermo-mechanical degradation; limiting regrind and replenishing antioxidants are key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!