Processing Machinery
3 조회수
Antioxidant aging of PP products
문제 현상
PP products used outdoors powder and become brittle.
원인 분석
PP has poor weather resistance, and ultraviolet rays break the molecular chains; aging accelerates when the antioxidant and light stabilization systems are insufficient.; during on-site investigation, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
해결 방법
①Select anti-UV stabilized grades; ②add carbon black or light stabilizers; ③control the processing heat history; ④perform aging test verification.; after adjustment, continuously sample and verify the effect, and resume mass production after confirming stability
핵심 요약
PP outdoor applications must be equipped with a stabilization system; protecting the molecular weight at the processing end is the foundation.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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