Molding Process
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CEF compression set large
Fenómeno del problema
The compression set of the CEF product is >30%, lower than the 15% requirement
Análisis de la causa
The elastic recovery of CEF is insufficient; the crosslinking degree is low and the plastic deformation is unrecoverable; the density is low, the cell wall is thin and the recovery is poor
Solución
1) Increase the crosslinking degree to 60-70% to reduce plastic deformation; 2) Select high elastic recovery CEF grades; 3) Add reinforcing fillers
Conclusión clave
Large compression set is caused by insufficient crosslinking; increasing the crosslinking degree is the key
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