Fig. 1: World wide Applications of ZnO.

Mini Review

Review – The Importance of Zinc Oxide (ZnO) in Rubber Technology

Zinc oxide (ZnO) is one of the most important compounding ingredient in rubber technology. more...

October 9. 2018 - Research news

Fig. 3: Viscous wall shear stress component tV* = tD + tvisc (in red) and wall shear stress (Pa) as a function of shear rate (EPDM uncured subject to OSCAR of γ.0 = 500s–1 and p = 180s).

Viscous behaviour of EPDM and Compounds

Oscillating Shear Capillary Rheometry (OSCAR) of Rubber Compounds

The knowledge of the viscous behaviour of a rubber compound under steady state condition is required to assess the performances of the material in extruder die and mould design or in mixing process evaluation. more...

October 9. 2018 - Research news

Fig. 4b: Expected response influenced by superposition of stress recovery and continued relaxation.

Investigation of SBR filled with Carbon Black

Characteristics of Relaxation and recovery Behavior of filled Rubber

This paper presents new experimental approaches for investigating relaxation and recovery behaviour in steady-state dynamic tests on rubber filled with carbon black, illustrated here using SBR double shear test pieces. more...

October 9. 2018 - Research news

Thermoplastische Elastomere  mit anpassbaren Anteilen nachwachsender Rohstoffe von bis  zu 90 Prozent sind sowohl im Consumer- als auch im Industry- und Automotive-Markt gefragt. Bildquelle: 2018 Kraiburg TPE

Nachhaltige Rohstoffe für maßgeschneiderte TPE-Compounds

TPE mit variablem Anteil nachwachsender Rohstoffe

Mit der Entwicklung anwendungsspezifischer Compounds unter Einsatz erneuerbarer Rohmaterialien kommt Kraiburg TPE der wachsenden Nachfrage nach umweltverträglichen oder nachhaltigen Thermoplastischen Elastomeren entgegen. Dabei nutzt der Hersteller seine Kernkompetenz für maßgeschneiderte TPE auf der Basis bestehender ebenso wie neuer Rezepturen. more...

October 9. 2018 - Tires in

Fig. 1: Multi Walled Carbon Nanotubes (MWCNTs), [2].

MWCNTs in PMMA

Tribological Behaviour of Poly­methyl Methacrylate reinforced by Multi-Walled Carbon Nanotubes

The effect of multi-walled carbon nanotubes on the hardness, friction and wear of polymethyl methacrylate reinforced by MWCNTs of 0.1, 0.2, 0.3, 0.4 and 0.5 wt. % contents is investigated. more...

October 8. 2018 - Research news

Figure 2

Photosensitive HXNBR

Photo-triggered Self-Healing of Elastomers

The photo-reversible cycloaddition reaction of anthracene groups is used to impart self-healing properties into hydrogenated carboxylated nitrile butadiene rubber (HXNBR). more...

October 8. 2018 - Research news

Figure 1 – Distribution of pressure while filling in the original design, the runner system causes a distinct unbalanced filling

Ensuring part quality while minimizing scrap

Elastomer Parts – Finding the Optimal Runner System via Virtual DoE

Increasingly complex plastic parts, which need to meet economical as well as ecological standards, pose an enormous challenge for injection molders. Tools like the virtual DoE, featured by the Sigmasoft Virtual Molding Technology, help rising to these challenges, e.g. by finding the optimal mold design for runner systems. This can help to increase the part quality by a substantial amount while reducing scrap in early stages of the development phase. more...

September 14. 2018 - Tires in

Table 1: Triboelectric series of the tested polymers.

Electrostatic Charge

Triboelectrification of Latex and Polyethylene Gloves

The aim of the study is to determine the electrostatic charge generated from the dry sliding of the latex (NBR) and polyethylene (PE) single and double gloves against polyamide, polypropylene and polytetrafluoroethylene. more...

September 12. 2018 - Research news

Fig. 1: Different modes of tensile deformation (loading direction in y-axis): (A) Simple elongation with volume consistency and (B) pure elongation with dilatation.

Elongation

The Effect of Boundary Conditions on the Failure Behavior of Rubber Vulcanizates under Tensile Deformation

In this study tensile deformation under pure elongation of unfilled and carbon black filled SBR vulcanizates has been investigated experimentally. more...

September 12. 2018 - Research news

Fig. 2: Water drop on a steel surface with the apparent contact angle θ. The letters S, L and V indicate the phases of the solid, the liquid and the gas phase.

Surface-Caracterization

Review – Characterization of modified Elastomer Surfaces by wetting

This article features the current state of research with respect to plasma and varnished elastomer composites, which have been characterized by the sessile drop and the modified Wilhelmy balance technique. more...

September 12. 2018 - Research news

Abb.1: Das Montieren von Gummi- oder Kunststoffrahmen auf PKW-Fensterscheiben  erfolgt heute in zunehmendem Maße in Vertikal-Spritzgießmaschinen mit Schiebe-  oder Rundtisch-Schließeinheiten durch das Umspritzen mit Kunststoff oder Gummi. Bildquelle: alle LWB Steinl

Glasscheiben im Werkzeug umspritzen

Efficient framing of car glass windows

The assembly of plastic components is one of the most innovative applications of the injection molding process. In this case, two or more injection molding processes are sequentially strung together, either within a machine or by the combination of individual machines by means of a handling system. But the assembly by injection molding is not limited to plastic components, but also non-plastic components, such as wood, metal or glass can be assembled with plastic by injection molding. The latter is increasingly used for mounting gaskets on automobile windows. The efficiency of this assembly process is largely determined by efficient glass pane manipulation. LWB-Steinl has more than 20 years of experience and presents the options. more...

August 6. 2018 - Tires in

Die Plasmareinigung sorgt für tiefen­gereinigte Dichtungen. Dieser Vorgang  ist durch ein Sichtfenster sehr schön an  der lilafarbenen Flamme zu beobachten. Bildquelle: alle OVE Plasmatec

Coatings make sealing rings even more efficient

Anti-friction coating for first-class performance

Was Dichtungen können müssen, ist nicht hoch genug zu bewerten. Obwohl sie C-Teile sind, müssen sie A-Funktionen übernehmen. So sollen sie möglichst den ewigen Zielkonflikt zwischen hervorragender Dichtwirkung, niedrigster Reibung und geringst möglichem Verschleiß auflösen. Eine Beschichtung mit Gleitlack bringt Elastomerdichtungen allen konkurrierenden Zielen näher. Diese Nachbehandlung und Veredelung eignet sich für Großserien genauso wie für Kleinstmengen ab Losgröße 1. more...

July 31. 2018 - Tires in

Fig. 5: Schematic illustration of ESC generated on floor material and polypropylene.

Friction and ESC

Reducing electrostatic Charge generated on Polymeric Floor in Hospitals

The aim of this research is to develop a new material for reducing electrostatic charge (ESC) generated from the walking of polypropylene shoes against polymeric floor in hospitals. more...

July 31. 2018 - Research news

Fig. 2: Finite element model representing the O-ring seal in the undeformed configuration. An extruded view of the axisymmetric  model is shown.

Simulation of Ageing Process

Finite Element Simulation of the Rubber Mechanical Behaviour due to thermomechanical Ageing

Service conditions in rubber components may provoke damage in them, leading to their incapability to develop their original functions. more...

July 27. 2018 - Research news

Fig. 4: AAF and von Mises equivalent stress at maximum deformation along the symmetry axis.

Behaviour of technical Elastomer-Components

FEM Implementation of elastomeric stress softening

The complex mechanical behaviour of filled elastomers comprises several nonlinear and dissipative effects, one of them is stress softening. more...

July 27. 2018 - Research news

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