Material Analysis
12 görüntüleme
Fast UV Aging of EVOH
Sorun Belirtisi
After 48h UV irradiation, EVOH mechanical properties decline >20% with yellowing
Neden Analizi
EVOH molecular chains undergo rapid photo-oxidative degradation under UV; surface molecular chains break forming microcracks
Çözüm
1) Add UV absorber 0.3-0.5wt% to block UV; 2) Add HALS 0.2wt% for radical scavenging; 3) Carbon black 2wt% to physically shield UV
Temel Çıkarım
Fast UV aging is caused by photo-oxidation; UV absorber and HALS are key
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!