MFI additive:

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MFI additive

The amount of polymer that passes through a hole in the melt for 10 minutes and a set temperature is called the MFI or the melt flow index of that polymer. This index is actually to show the psychological level of the polymer as a measure of extrusion capability. In general, with increasing the melt flow index of MFI molecular weight, tensile strength, crack resistance, softening temperature and gravity, chemical resistance of polymer will reduce. This index is inversely related to viscosity and decreases with increasing MFI viscosity. This feature is used to personalize the grade of petrochemical grade polymers and what process and forming method this polymer is suitable for. For example, high MFI grades are used for the injection process and low MFI process is used for extrusion. Rising temperatures during the process cause the polymer chain to break down, result ing in more melt being released at a given time, increasing the MFI's melt flow index. If the temperature rises too high and normal, the polymer matrix chains may stick together, forming a crossover phenomenon that reduces MFI, so when the material is present in the extruder on the MFI the output material as well as the MFI material on the amount of material present in the extruder and therefore the temperature is influential. Other factors, such as changing the lethal rate, cooling conditions, and any factors that affect the rheological properties of the polymer, cause this parameter to change. In standard mode, the product's MFI changes should not exceed 25% of the raw materials. In some cases, elevating MFI plays a vital role in the production and formation of intermediate and final products. MFI elevator masterbatch with a very low consumption rate of 50% by weight increases MFI in polypropylene-based polymers. It is noteworthy that increasing the percentage of consumption increases the rate of this index