Extrusion & Post
7 visualizações
PAN spinning solution gelation
Fenómeno do problema
PAN solution locally gels during storage or spinning and loses spinnability
Análise das causas
Temperature fluctuations cause PAN crystallization and physical crosslinking; the solvent system (such as DMSO/DMF/NaSCN aqueous solution) has reduced dissolving ability for PAN; PAN concentration too high
Solução
Strictly control the spinning solution temperature at 60-80°C; select suitable solvent concentration and PAN content (usually 15-25%); filter to remove gel particles
Conclusão principal
Gelation of PAN solution is the main process risk in carbon fiber precursor spinning
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!