Molding Process
8 visualizaciones
PAN pre-oxidation process exotherm out of control
Fenómeno del problema
During pre-oxidation, the internal temperature of the fiber bundle rises sharply, causing the fibers to fuse or burn
Análisis de la causa
PAN pre-oxidation is an exothermic reaction (cyclization reaction releases heat); the oxidation oven temperature is too high or the residence time is too long; the fiber bundle is too thick and heat dissipation is poor
Solución
Step heating (200→230→250→280°C); control the residence time and tow density of the fiber bundle in the oven; forced air circulation to remove reaction heat
Conclusión clave
Pre-oxidation exotherm control is the process safety key in carbon fiber manufacturing
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!