Molding Process
4 visualizações
PEI Melting Temperature Range Selection
Fenómeno do problema
PEI melting temperature settings for different applications are confusing; color stability and flowability are difficult to balance, and processes drift between batches.
Análise das causas
The common melting temperature of PEI is 338~399℃, with most applications in the 357~385℃ range; exceeding 382℃ may cause color change; special grades such as ULTEM ATX should be processed at lower temperatures of 310~371℃; grade differences are significant.
Solução
①Set the melt temperature at 357~385℃ for most applications; ②control color-sensitive applications below 382℃; ③special grades such as ATX follow the 310~371℃ low-temperature range; ④confirm one by one according to the grade manual.
Conclusão principal
PEI melt temperature settings must be grade-differentiated; the 382℃ discoloration line and ATX low-temperature zone are key knowledge points; manual confirmation is better than applying experience.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!