Melt Flow Index Deluxe Model

Melt Flow Index is the output rate (flow) in grams pass through a standard die of 2.0955 ± 0.0051 mm diameter that occurs in 10 minutes when a fixed pressure is applied to the melt via a piston and a specified load of total mass of 2.16 kg at a temperature of 190°C (some material/ polymers are measured at a higher temperature, some of them are use different weights and some even different orifice sizes).

Melt Flow Index is an assessment of average molecular mass and is an inverse measure of the melt viscosity; in other words, the higher a MFI, the more polymer flows means having lower viscosity of the material under test conditions. Knowing the MFI of a polymer is essential to anticipating and controlling its processing. Generally, higher the value of MFI; polymers are used in injection moulding, and lower value of MFI; polymers are used with blow moulding or extrusion processes.

Features

• Microprocessor based PID temperature controller.
• Accurately maintains temperature between Ambient to 400°C.
• Digital pre-settable timer incorporated for accuracy and repeatability.
• Automatic sample cutting ensures reliable results and easy operation.
• Standard accessories are included.
• Powder Coating: Corrosion resistant finish.

Specifications

1. Dimensions of piston head :  9.47mm diameter
2. Diameter of heater tube cavity :  9.55mm above the die can be maintained within 190°C ± 0.2 °C
3. Weights :  1.2 kg; 2.16 kg; 3.8 kg; & 5 kg
4. Die:

• Dia- 9.5504 ± 0.0076 mm;
• I/D- 2.090 mm (± 0.005 mm);
• Length- 8.000 ± 0.025 mm

Related Standards 

• ASTM D 1238; &
• IS 2530 - 1963