Processing Machinery
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Corrosive gas generated during PEI flame retardant modification processing
Problem Phenomenon
Halogen-containing flame retardant PEI systems produce irritating gas during processing and corrode equipment
Cause Analysis
The flame retardant (especially halogen-containing systems) decomposes at the processing temperature producing acidic gas; the processing temperature exceeds the thermal stability temperature of the flame retardant
Solution
Switch to halogen-free flame retardant systems (such as phosphorus-based and nitrogen-based flame retardants); strictly control the processing temperature not to exceed the decomposition temperature of the flame retardant; strengthen workshop ventilation and exhaust
Key Takeaway
The formulation design of flame retardant PEI must consider both flame retardant efficiency and processing safety
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