ISO 1133-1 Determination of Melt Mass Flow Rate (MFR) and Melt Volume Flow Rate (MVR) of Plastics, Thermoplastics

Material Testing

ISO 1133-1 Determination of Melt Mass Flow Rate (MFR) and Melt Volume Flow Rate (MVR) of Plastics, Thermoplastics

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 1133-1 testing. This part of ISO 1133 specifies two procedures for determining the melt mass flow rate (MFR) and melt volume flow rate (MVR) of thermoplastic materials under certain temperature and load conditions. Procedure A is a mass measurement method. Procedure B is a displacement measurement method.

ISO 1133-1 Determination of Melt Mass Flow Rate (MFR) and Melt Volume Flow Rate (MVR) of Plastics, Thermoplastics

Normally, test conditions for melt flow rate measurement are specified in the material standard with reference to this part of ISO 1133.

MVR is particularly useful when comparing materials with different filler content and when comparing filled materials with unfilled thermoplastics.

The shear rates in these methods are much smaller than those used under normal processing conditions, and it is therefore possible that the data obtained by these methods for various thermoplastics are not always correlated with their behavior during processing. Both methods are primarily used in quality control.

The melt mass flow rate (MFR) and melt volume flow rate (MVR) are determined by extruding the molten material from the cylinder of a plastometer through a die of specified length and diameter under predetermined temperature and load conditions.

This section of ISO 1133 is recommended for stable materials that are rheologically insensitive to the time-temperature history experienced during melt flow rate testing. ISO 1133-2 is recommended for materials whose rheological behavior is sensitive to the time-temperature history of the test, for example materials that degrade during testing.

EUROLAB assists manufacturers with ISO 1133-1 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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