Material Drying
9 visualizaciones
Product bubbles/internal pores
Fenómeno del problema
A large number of bubbles are visible after cutting the product open, and mechanical properties are significantly reduced
Análisis de la causa
PEEK insufficiently dried with moisture content >0.02% (standard drying: 150°C/3h or 180°C/2h); processing temperature too high, material decomposes releasing gas; holding pressure insufficient to compact bubbles
Solución
Strictly implement drying standards (dew point <-30°C); check the performance and operating status of the drying equipment; increase holding pressure to 800-1000bar and extend holding time by 50%
Conclusión clave
Trace moisture at PEEK's extremely high processing temperature (>360°C) can produce a large number of bubbles
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!