What is the MI of polypropylene PP

MI refers to the melt index, Melting Index: The melting index of the thermoplastic at a certain temperature and pressure, the melt passes through the weight of the standard capillary within ten minutes, expressed as (g/10min). Melt index is an important index for characterizing the processability of materials in polymer processing. It is often used in industry to indicate the relative value of melt viscosity: good fluidity, large MI, poor fluidity, and small MI. (Note: MI is the melt index) is an indicator that reflects the melt flow characteristics and molecular weight. The thermoplastic resin had a melt throughput in grams at a temperature of 190 ° C for 10 minutes at a load of 2160 grams through a small orifice of 0.2 cm (0.825 inch) diameter.