The two main MFI test standards are ASTM D1238 - “Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer” and ISO1133 – “Determination of the Melt Mass-Flow Rate (MFR) and ...

Among the first instruments plastics molders, extruders, and compounders are likely to consider when outfitting a new lab is a melt-flow indexer or “melt indexer.” Known as an extrusion plastometer in ...

Editor?s note: The author, Donald E. De Laney, a consultant in polymer process rheology, worked with GE for 17 years and has worked with Dynisco over the past eight years. The plastics compounding and ...

Tinius Olsen is offering a new advanced melt indexer, as well as new software for data acquisition and closed-loop control of universal testing machines that have a compatible servo system or ...

Polycarbonate materials based on bisphenol-A (BPA) are noted for their inherent optical clarity, low color, toughness, and ductility, along with high heat, chemical, and flame-resistance properties.

Past theoretical work predicts that melt bands emerge perpendicular to the direction of the maximum rate of extensional strain. This prediction results from assuming that the matrix viscosity depends ...