Processing Machinery
7 visualizaciones
PMMA Medical Devices
Fenómeno del problema
Medical transparent parts crack after sterilization, and craze where wiped with alcohol disinfection
Análisis de la causa
Alcohol-based disinfectants are a classic cause of PMMA stress cracking; sterilization methods do not match the material; high-stress molded parts fail quickly in chemical environments; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solución
①Verify alcohol compatibility for parts in contact with disinfection; ②choose chemically resistant modified grades or alternative materials; ③anneal after molding to reduce stress; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
Conclusión clave
Alcohol contact in medical scenarios is a hard constraint for PMMA; three layers of protection: verification, modification, and annealing; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!