Enter the mass of the material extruded and the time taken for the extrusion into the calculator to determine the Melt Flow Index (MFI). The MFI is a measure of the ease of flow of the melt of a thermoplastic polymer.

## Melt Flow Index Formula

The following formula is used to calculate the Melt Flow Index (MFI):

MFI = (M / T) * 10

Variables:

• MFI is the Melt Flow Index (grams per 10 minutes)
• M is the mass of the material extruded (grams)
• T is the time taken for the extrusion (minutes)

To calculate the Melt Flow Index, divide the mass of the material extruded by the time taken for the extrusion and then multiply by 10 to get the index in grams per 10 minutes.

## What is Melt Flow Index?

The Melt Flow Index (MFI) is a measure of the flow properties of a thermoplastic polymer. It indicates how easily the polymer can flow under pressure and heat. The MFI is an important parameter for quality control and comparison of materials in the plastics industry. A higher MFI value indicates a lower viscosity and a more fluid material, which can be important for processes like injection molding.

## How to Calculate Melt Flow Index?

The following steps outline how to calculate the Melt Flow Index (MFI).

1. First, determine the mass of the material extruded (M) in grams.
2. Next, determine the time taken for the extrusion (T) in minutes.
3. Use the formula MFI = (M / T) * 10 to calculate the Melt Flow Index.
4. Finally, enter the values into the calculator above to verify the result.

Example Problem :

Use the following variables as an example problem to test your knowledge.

Mass of the material extruded (M) = 12 grams

Time taken for the extrusion (T) = 2 minutes