Molding Process 4 visualizaciones

High density of PU rigid foam

Fenómeno del problema

PU rigid foam density 0.35g/cm³, higher than 0.25g/cm³

Análisis de la causa

Insufficient blowing agent dosage; isocyanate index too high; insufficient catalyst dosage, inadequate foaming

Solución

1) Increase physical blowing agent dosage by 10-15%; 2) Adjust isocyanate index to 1.05-1.1; 3) Increase catalyst dosage by 0.1-0.2wt%

Conclusión clave

PU rigid foam density is determined by blowing agent dosage and catalyst

PU rigid foam high density blowing agent isocyanate index catalyst

¿Le ha resultado útil?

0 personas encontraron esto útil