Material Analysis
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PPSU decomposition from excessive processing temperature
Problem Phenomenon
PPSU products darken in color, foam, and degrade in performance.
Cause Analysis
Processing temperature >390°C exceeds PPSU thermal decomposition temperature; foaming and degradation products cause deterioration of appearance and performance.
Solution
Strictly control barrel at 340-380°C, never exceeding 390°C; shorten residence time.
Key Takeaway
PPSU ultra-high temperature processing window is narrow and needs fine management.
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