Processing Machinery
1 views
PA6 UV Chalking
Problem Phenomenon
After one year of outdoor use, PA6 products show surface whitening, chalking and strength decline
Cause Analysis
UV rays cause photo-oxidative scission of PA6 molecular chains, and the surface layer degrades and chalks; natural-color material without an anti-UV system has insufficient outdoor weatherability; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blind machine adjustment based only on experience
Solution
Select carbon black filled or anti-UV additive grades for outdoor products; apply surface coating protection for light-colored outdoor parts; periodically replace load-bearing outdoor parts; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Outdoor applications must solve UV protection, and carbon black is the most economical and effective anti-UV means; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!