Extrusion & Post
6 visualizações
High boiling water shrinkage rate of PET fiber
Fenómeno do problema
The boiling water shrinkage rate of PET fiber exceeds the standard (>5%), and the dimensions of finished products are unstable.
Análise das causas
Insufficient heat setting after fiber drawing results in high molecular chain internal stress; draw ratio is too large; heat setting temperature is low or time is short.
Solução
Increase heat setting temperature and extend setting time; appropriately reduce the draw ratio; adopt relaxation heat treatment process.
Conclusão principal
PET fiber boiling water shrinkage rate reflects the internal stress level; full heat setting is the control means.
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!