Lubricants contain solid contaminant particles that hinder their function in wear and friction reduction. These undesirable particles can be generated within machine components by abrasion and adhesion or entrained into the lubricating oil from the surrounding environment. Particles damage surface sand wear down machine elements, contributing to production system failure.

Nowadays, recycling of waste polymers has become an important subject due to the concerns about environmental pollution and human health. However, deterioration in the properties of polymers after recycling is a problem that needs to be overcome. This study aims to obtain a simultaneously improvement in the fracture toughness and tensile strength properties of the recycled polycarbonate (r-PC).

In enger Kooperation mit Saar Gummi präsentiert Kraiburg TPE ein neues Compound mit hohem Rezyklatanteil für automobile Dichtsysteme. Die auf der Thermolast K-Reihe basierende Lösung ermöglicht eine nahtlose Integration in Serienprozesse bei gleichzeitig reduziertem CO2-Fußabdruck. Damit erhalten Verarbeiter eine nachhaltige Materialalternative, ohne Abstriche bei der Performance.

Cervical spine degeneration is one of de fects leading to neck and neurological problems which can be resolved by cervi cal fusion implants. However, used tradi tional implant may lead to some compli cations. High-density polyethylene (HD PE) is introduced in this field because of its biocompatibility. 

Various plastics are mostly decomposed without taking care of their post-utilization. This study aims to develop a new Thermoplastic elastomer (TPE) based on such plastic waste. TPE based on recycled high density polyethylene (rHDPE)/natural rubber (NR) was prepared with special attention to add sustainable filler namely kenaf fiber. 

A comparison between two measurement techniques for determining the thermal diffusivity of unfilled and filled NR samples is considered: the laser flash apparatus from Netzsch Gerätebau GmbH and an in-house method developed at Deutsches Institut für Kautschuktechnologie. The test temperature ranges between 60°C and 140°C. The measured thermal diffusivity, α , is on average for the filled NR samples and for the unfilled NR samples. The results obtained reveal particularly good agreement between the two techniques. 

Herein, the objective of this work was to effectively apply novel matrix from soybean meal (SB), modified with lactic acid (LA), cellulose fiber (CF) /natural rubber (NR) coating for encapsulation of urea fertilizer. The density of the CF/ SBL matrix increased as a function of the SB and L and its value ranges bet ween 0.11 and 0.125 g/cm3. 

Online control of product quality with regard to the rheological material properties is becoming increasingly important. In particular, the elastic material properties of the melt, such as the elongation viscosity, enable a significantly better batch differentiation than the melt index value or the shear viscosity.

Cone/cone, closed boundary torsional rheometer (RPA) appears to be a highly interesting alternative to measure stea dy shear viscosity. Usually, this rheome ter type is designed to measure only dy namic viscosity. The ability to program a steady rotation, programmed in strain and time, provides a unique way to measure in steady shear mode.

Nach dem verlustreichen Jahr 2025 steht die Kautschukindustrie im März 2026 vor existenziellen Hürden. Energiekostenschocks durch den Iran-Konflikt und Standortnachteile erzwingen Investitionsverlagerungen ins Ausland. Der WDK fordert von der Bundesregierung nun ein entschlossenes Umschalten in den Krisenmodus.