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Experimental and mathematical treatment of transfer pot temperature for thermosets
Author(s) -
Manzione L. T.,
Poelzing G. W.,
Progelhof R. C.
Publication year - 1988
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760281608
Subject(s) - thermosetting polymer , materials science , die swell , transfer molding , composite material , flow (mathematics) , heat transfer , molding (decorative) , mold , mechanics , plastics extrusion , physics
The heating and flow behavior of thermoset molding compound within the pot of a transfer molding process were studied with flow visualization experiments and a mathematical model. The flow pattern within the pot was found to be a stagnation point flow. The extrudate temperature was only 10°C–15°C above the preheat temperature, and it was relatively constant except for start‐up and termination transients. The chemical conversion of the extrudate was well below the conversion to gel for typical process conditions. Variations in pot diameter, preheat temperature, and pot temperature were also examined.