Demonstrator – sanitary sealing ring (Bild: )
CONSTRUCTION AND SIMULATION

Applied Resource Efficiency and Lightweight Design for a Sealing Ring

Due to their energy-intensive manufacturing process and low recyclability rubber parts offer great potential for reducing material use and carbon footprint. Therefore, different approaches were investigated with the aim to reduce the resource use of a rubber sealing ring while maintaining specifications. The combination of bio-based and high-performance polymers and fillers, the foaming of rubbers using microspheres and a load-specific design enabled savings in weight of up to 26%. 

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Static Coefficient of Friction (SCOF) Values under Various Conditions (Bild: )
RAW MATERIALS AND APPLICATIONS

Investigation of Slip Resistance for Flooring Materials under Different Working Conditions

This study examines natural fillers in epoxy composites for improving slip resistance of industrial flooring. Ceramic tiles, plain epoxy, and epoxy with date seed powder were tested against three safety shoe types under dry, wet, oily, and oil/water conditions. A custom tribometer measured static and dynamic friction. Results show that date seed powder significantly improves slip resistance, especially on contaminated surfaces, making it suitable as an eco-friendly anti-slip coating in varied working environments.

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screenshot-202025-12-08-20131102-710x399v1 (Bild: )
ELASTOMERS AND PLASTICS

Long Chain Branching for Ethylene-Propylene-Diene Rubber: a fast and accurate measurement method

Modern catalyst systems enable us to synthesize ethylene-propylene-diene polymers with well-defined properties. For example, the degree of polymer branching can be precisely adjusted to enhance the processability of rubber compounds. In this work, we compare four commonly used parameters obtained from Mooney stress relaxation, and frequency sweep, and amplitude sweep measurements. 

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Übersicht über gängige Elastomere (Bild: )
Praxis

Zum Vergleich der Wärme- und Ölbeständigkeit von Elastomeren

Wärme- und Ölbeständigkeit sind nach wie vor wesentliche Kriterien für die Auswahl von Elastomeren. Zum Vergleich von Elastomeren ist die grafische Einteilung nach Wärme- und Ölbeständigkeit in Anlehnung an die ASTM D 2000 üblich. In diesem Beitrag wird eine modifizierte Darstellung vorgestellt, die außerdem Informationen zur Witterungs- und Ozonbeständigkeit sowie zur Kälteflexibilität ermöglicht.

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