Molding Process
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DSTDP large compression set
Fenómeno del problema
DSTDP product compression set >30%, below the 15% requirement
Análisis de la causa
DSTDP elastic recovery insufficient; crosslinking degree on the low side, plastic deformation unrecoverable; density on the low side, cell walls thin, poor recovery
Solución
1) Increase crosslinking degree to 60-70% to reduce plastic deformation; 2) select high elastic recovery DSTDP grades; 3) add reinforcing filler
Conclusión clave
Large compression set is caused by insufficient crosslinking; increasing crosslinking degree is key
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