PVT isothermal

In isothermal PVT measurement, the measurement process starts at room temperature after the material is filled at melt temperature and slowly cooled to room temperature. The pressure is then gradually increased before the next temperature level is approached. This pressure cycle measurement cycle is used for the previously defined temperature levels.  GÖTTFERT offers the possibility to perform isothermal and isobaric PVT measurements with the capillary rheometer Add-on PVT or with the stand-alone device PVT500.

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PVT isobaric

This procedure is standardized in ISO 17744 for piston operated instruments. Isobaric PVT measurements are performed at constant pressure...

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