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Rathy Cato
- 11
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Where can i get the theoretical value of MFI for common polymeric materials such as PP, PE, PS, PMMA...as reference?
Theoretical MFI (Melt Flow Index) values are used to determine the flow properties of a polymer in its molten state. This information is important for predicting the behavior of the polymer during processing, such as injection molding or extrusion.
Theoretical MFI values are calculated using the molecular weight and viscosity of the polymer, as well as the temperature and pressure at which the measurement is taken. These values are then used in an equation to determine the theoretical MFI value.
No, theoretical MFI values are calculated based on the properties of the polymer, while actual MFI values are measured experimentally. Actual MFI values may vary from theoretical values due to factors such as processing conditions and the presence of additives.
Theoretical MFI values can vary significantly among different polymeric materials due to their different molecular structures and viscosities. For example, a material with a higher molecular weight will generally have a lower theoretical MFI value than one with a lower molecular weight.
Having a reference for common polymeric materials' theoretical MFI values allows for easier comparison and selection of materials for specific processing applications. It also provides a baseline for determining the expected flow properties of a particular polymer.