Material Analysis 2 views

Heavy smoke in PU processing

Problem Phenomenon

During PU processing, smoke and large amounts of volatiles overflow from the vent

Cause Analysis

Low molecular volatiles in PU evaporate at processing temperature; additives decompose producing smoke; exhaust system insufficient

Solution

1) Lower processing temperature to reduce volatilization; 2) Increase exhaust system capacity; 3) Select low-volatility raw material grade

Key Takeaway

Heavy smoke is caused by volatiles evaporation; temperature reduction and exhaust are key

PU processing smoke volatiles exhaust system temperature reduction

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