Material Analysis
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POM Formaldehyde Odor Management
Fenómeno do problema
Workshop formaldehyde odor exceeds the limit, operators' eyes sting, and environmental testing fails
Análise das causas
POM decomposes at high temperature releasing formaldehyde gas (IARC Group 1 carcinogen), OSHA exposure limit 0.75ppm; the closer processing gets to 220-240℃, the more violent the release; stagnant material and shear heat are also release sources
Solução
①Strictly control processing temperature below 210℃; ②shorten residence time and keep the barrel clean; ③install local exhaust ventilation and regularly test workshop concentration; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Formaldehyde release is the occupational health red line of POM processing; temperature discipline plus ventilation testing is both a quality requirement and a regulatory requirement; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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