Material Analysis
15 visualizaciones
Fast EEA ultraviolet aging
Fenómeno del problema
EEA after 48h of UV irradiation shows mechanical property decline >20%, yellowing
Análisis de la causa
EEA molecular chains rapidly degrade by photo-oxidation under UV; surface molecular chains break forming microcracks
Solución
1) Add UV absorber 0.3-0.5wt% to block UV; 2) Add HALS 0.2wt% for radical capture; 3) Carbon black 2wt% for physical UV shielding
Conclusión clave
Fast ultraviolet aging is caused by photo-oxidation; UV absorber and HALS are key
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!