Material Analysis
15 visualizaciones
MP poor weather resistance
Fenómeno del problema
MP after 6 months outdoors, mechanical properties decline 40-50%, surface cracks
Análisis de la causa
MP polyolefin backbone photo-oxidative degradation, molecular chain breakage; UV directly attacks C-C bonds
Solución
1) UV-327 0.5-1wt% to absorb UV; 2) HALS-770 0.2-0.5wt% for light stabilization; 3) 1010+168 antioxidant 0.3wt% to prevent oxidation
Conclusión clave
poor weather resistance is caused by photo-oxidation; UV+HALS+antioxidant triple protection is key
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!