LWB Maschinenbau ernennt technischen Geschäftsführer
Zum 1. Juni 2023 hat LWB Maschinenbau aufgrund des Wachstums und der Komplexität der Geschäfte Schlüsselpositionen neu besetzt sowie Verantwortlichkeiten neu verteilt.
PFAS im Maschinen- und Anlagenbau
Das geplante Verbot würde bedeuten, dass europäische Maschinenbauer auf PFAS verzichten müssten, während Konkurrenten aus Nicht-Euro-Ländern die Stoffe weiterhin verwenden und sich damit erhebliche Wettbewerbsvorteile verschaffen könnten, so Dr. Sarah Brückner und Thorsten Kühmann in ihrem Kommentar.
Ensinger Gruppe trauert um Firmengründer
Der Gründer des nach ihm benannten kunststoffverarbeitenden Familienunternehmens, Wilfried Ensinger, ist im Alter von 87 Jahren gestorben.
Wie aus Reifen wieder Reifen werden sollen
Die Recyclingindustrie ist auf der Suche nach Technologien für das nachhaltige Aufbereiten von Altreifen. Bei dem Thema sind aber nicht nur die Hersteller gefordert, sondern alle Recyclingakteure.
Forschung Zur Rubrik
Molecular-Scale Polymer Melts Response to shear in the linear and non-linear rheological
The molecular-level response to shear of entangled polymers at interfaces and in the bulk has been of interest to understand the non-linear rheological response of polymers. Here we focus on the molecular level response to shear strain leading non-linear rheological phenomenon, in linear and star polymers comparing the observed response to the predictions of tube theory. We used SANS measurements of the bulk polymer response to shear in Couette geometry on melts of high molecular weight mixtures of polymers extending our previous results on interfacial responses with rheoNR measurements in cone-and-plate geometry.[1, 2] further development of the theory.
Influence of Process Parameters on the Curing of Polyurethanes by dielectric Measurements
The Polyurethane Reaction Injection Molding (PU RIM) process is currently still reliant on a high level of know-how, both in the case of quality deviations of the product and in the initial configuration of molds. PU manufacturing hardly uses the established sensor technologies that are common in injection molding. In a research project at the Institute for Plastics Processing (IKV), the influence of the process parameters component temperature, mold temperature, material output speed and mixing ratio on the curing behavior of compact polyurethane coating systems is being experimentally investigated by means of dielectric measurements. The results show that for all variations of the process parameters investigated, the influence on the curing reaction could be successfully detected.
Roh- & Zusatzstoffe Zur Rubrik
Arlanxeo plant Bau einer Kautschukanlage in Saudi-Arabien
Arlanxeo beabsichtigt in Jubail eine Kautschukanlage für zwei Hochleistungselastomere zu errichten. Der Baubeginn ist für das Jahr 2024 geplant.
Evaluation of the Reinforcement Mechanism of functionalized Nanoparticles in Silica loaded Rubber Compounds
The performance of nano-sized rubber particles with different functional groups was studied in a silica loaded tire tread compound. The nanoparticles contained hydroxyl-, carboxyl-, dimethyl amino-, pyridino-, or epoxy- groups. In uncured compounds the reduction of filler flocculation at 160°C was mostly pronounced by nanoparticles, which contained either carboxyl or hydroxyl groups. In vulcanizates, the best filler dispersion and the best combination of mechanical and dyn.- mechanical properties were obtained with nanoparticles with OH-groups. As the silanization of the OH-groups is much slower than that of the silanol groups the OH-groups of the nanoparticles are practically not silanized at the end of the compounding procedure.
