Material Analysis
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Large odor in PVA processing
Problem Phenomenon
Obvious irritating odor in the PVA processing workshop
Cause Analysis
PVA releases odorous volatiles (such as acetic acid, formaldehyde, etc.) at processing temperature; additive decomposition releases odor
Solution
1) Control processing temperature within the PVA recommended range to reduce decomposition; 2) Strengthen workshop ventilation and exhaust; 3) Add absorbent to neutralize odor
Key Takeaway
Large odor is caused by PVA decomposition and volatilization; temperature control and ventilation are the key
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