Definition, Function and Instrument of MFI Test
MFI test is a simple measurement of the quantity of polymer pushed through a die of specified dimensions at a set temperature within 10 min. Melt flow index, is a value that indicates the fluidity of plastic materials during processing. The MFI test method is: first, let the plastic pellets melt into plastic fluid within a certain time (10 minutes), at a certain temperature and pressure (different standards for various materials), and then measure the grams (g) of plastic that flows out through a 2.1mm diameter tube. The larger the value, the better the processing fluidity of the plastic material, and vice versa.