Apply to material of PP, PE, POM, AR, PC, ABS plastics and plastic productions, it is widely used in plastic raw material production, petrochemical industry, scientific research departments and commodity inspection department.
Test principle
The instrument is applied to determinate the rate of extrusion of molten thermoplastic resins using an extrusion plastometer. After a specified preheating time, resin is extruded through a die with a specified length and orifice diameter under prescribed conditions of temperature, load, and piston position in the barrel.
Melt-mass flow rate method (MFR) often used to determine the melt flow rate of a thermoplastic material. It is based on the measurement of the mass of material that extrudes from the die over a given period of time. The units of measure are grams of material /10 minutes (g/10 min).
Melt-volume flow rate method (MVR) used to determine the melt volume rate of thermoplastic materials. Based on the determination of the volume of material extruded from the die over a given period of time. MVR measurements are reported in cubic centimetres/10minutes (cm³/10 min).
Standards
ASTM D1238
ISO 1133
Features
◆ Touch screen enables fast, accurate input test parameters and display data.
◆ Automatic specimen cutting mode allows to adjust the times and interval time of melt cutting to increase accuracy and repeatability of test results.
◆ Allow two test methods, weight /MFR (Melt Flow Rate) and volume/MVR (Melt Volume Rate).
◆ User-friendly operation professional software with simple interface, easy to use and convenient to set test process.
FIG. 1 General Arrangement of Extrusion Plastometer
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