PVC dry blends often have the tendency to exhibit greatly differing melt and degradation characteristics, after undergoing comparatively small alterations in the recipe. This can lead to a variety of problems during processing such as reduced impact strength or the colouring or degradation of the extrudate.
The PolyLab System offers a quick and reliable method of examining these material characteristics.
The aim of the test was to differentiate between two PVC compound formulations, which only differ with respect to 0.1% stabliser content.
The PolyLab System is available from Rheology Solutions .