Molding Process
5 views
PPS discoloration (browning)
Problem Phenomenon
During PPS processing, the color changes from natural light yellow to dark brown or black.
Cause Analysis
Excessive processing temperature or too long residence time causes PPS oxidative crosslinking and browning.
Solution
Strictly control temperature <340°C; shorten residence time; use nitrogen protection when necessary.
Key Takeaway
The root cause of PPS discoloration from over-processing lies in oxidation.
Was this helpful?
0 people found this helpful
Thank you for your feedback!