Material Drying
4 조회수
PA66 drying temperature window
문제 현상
PA66 dried at 100℃ for 8 hours, particles turn yellow and brittle, injection molded parts strength significantly reduced
원인 분석
PA66 drying temperature over 90℃ with long-time heating causes thermal oxidative degradation, molecular weight decline manifests as yellowing and embrittlement, over-drying damages the material instead; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
해결 방법
PA66 drying temperature controlled at 80-90℃, time 4-6 hours; avoid high-temperature long-time drying; yellowed material downgraded and must not be used for structural parts; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
PA66 drying window 80-90℃×4-6 hours, overtime and over-temperature both cause problems; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!