Extrusion International 3-2023

15 Extrusion International 3/2023 RAYEX® S Static X-Ray Measuring System Benefits: All in one! Complete system for precision measurement of wallthickness, ovality, eccentricity and diameter. Fast measurement, immediate response to product changes. Operator friendly due to smart measurement algorithms. State of the art connectivity with integrated Profinet IO, Ethernet TCP/IP, Ethernet IP, or OPC UA communication protocols. Minimum maintenance requirement. Zumbach Electronic AG Hauptstrasse 93 | 2552 Orpund | Schweiz Telefon: +41 (0)32 356 04 00 | sales@zumbach.ch www.zumbach.com min 2 Min. object diameter (mm) max 100 Max. object diameter (mm) up to 20 Scan rate (scans/s) to previous methods include signifi - cantly shorter measurement times, the elimination of time-consuming sample preparation, and the possi- bility of investigating larger sample quantities in each individual mea- surement. Industry is expressly in- vited to participate in the project committee free of charge. Laboratory analysis plays an im- portant role in the production, pro- cessing and damage investigation of plastics. Due to their temperature- dependent material properties, dif- ferential scanning calorimetry (DSC) as well as rheological and (dynamic) mechanical tests at specific temper - atures have become established as standard methods. These test meth- ods have the disadvantage that the samples must be elaborately prepared for the respective tests or only very small sample quantities (a few mg) can be investigated. Nuclear magnetic resonance (NMR) offers an alternative for char- acterizing plastics. It is sensitive to the mobility of polymer chains and is good at detecting temperature- induced changes. Low-cost compact benchtop NMR instruments have be- come increasingly popular in recent years. They allow the investigation of plastic pellets (a few g) or thermoset molding compounds. However, due to the current use of temperature- sensitive permanent magnets, mea- surement is only possible at room temperature or just above. First commercially available ap- proaches for measurement at higher temperatures allowsample tempera- tures up to 200 °C for measurements on polyolefins. However, since these material types allow only low profit margins, they are often not tested. SKZ – Das Kunststoff-Zentrum Dr. Norbert Halmen, n.halmen@skz.de Fraunhofer IIS Dr. Philipp Mörchel, philipp.moerchel@iis.fraunhofer.de