Processability tests :
Processability tests are conducted to understand the flow behaviour of the material before it is converted into a finished product. Certain processability tests include determination of Melt Flow Index and Rheometry.
Melt Flow Indexer(MFI)*: (7026, Ceast, Italy) Melt Flow Index is an assessment of average molecular mass and is an inverse measure of the melt viscosity; Knowing the MFI of a polymer is vital to anticipating and controlling its processing. Generally, higher MFI polymers are used in injection molding, and lower MFI polymers are used with blow molding or extrusion processes.
Capillary Rheometer: (RH2000, Malvern, UK) Capillary rheometry has its origins in polymer melt processing, but is also directly relevant to many other material processes such as high speed coating and printing applications. Based on controlled extrusion of a test material, capillary rheometry enables material flow and deformation properties to be characterized under conditions of high force (or pressure), high shear rate and at elevated temperature.