PVT isobaric

This procedure is standardized in ISO 17744 for piston operated instruments. Isobaric PVT measurements are performed at constant pressure and stepwise changed temperature.  Thereby, the material-specific volume can be determined as a function of temperature and pressure. Especially for the injection moulding process isobaric cooling is a process like depict.
GÖTTFERT offers the possibility to perform isobaric and isothermal PVT measurements with the capillary rheometer Add-on PVT or with the stand-alone device PVT500.

 

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PVT isothermal

In isothermal PVT measurement, the measurement process starts at room temperature after the material is filled at melt temperature and...

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