what is the difference between polypropylene MFI=45 with polypropylene MFI=15?
- GlenguinLv 71 decade agoFavorite Answer
MFI is short for "Melt Flow Index". The actual units are grams. More precisely, it is the weight of a polymer in grams that flows through a specific capillary at a specified temperature and back pressure. Without those other data, all we can say about polypropylene MFI=45 is that it has a much lower molecular weight than polypropylene MFI=15; perhaps by a value of 10-100x.