Research News

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

Fig. 6: Mooney-Rivlin material calibration.

Analyzing Stress States

Efficient Material Parameter Calibration of Elastomer Specimen in uniaxial Tension, planar Shear and equibiaxial Tension

For analyzing arbitrary static 3D stress states in solid rubber compounds, three different material tests are performed. more...

July 26. 2018 - Research news

Fig. 2: Schematic image for distinguishing physical and chemical  relaxation.

Aging of EPDM

The analysis of Aging Processes of EPDM Elastomers using low field NMR with Inverse Laplace Transform and Stress Relaxation Measurements

With regard to the long-term stability of seals, “stress-relaxation” testing is known to deliver important information. more...

July 26. 2018 - Research news

Fig. 8: Dependence of εb on ATBC content (factor x3) and starch content (factor x2) in PLA/TPS/PHB blends, measured two weeks after film extrusion. Source Slovak University of Technology, Bratislava

Influence of structure of the blend based on polylactic acid, polyhydroxybutyrate and thermoplastic starch (PLA/TPS/PHB) on morphology and mechanical properties

Multicomponent Blends based on Polylactic Acid, Polyhydroxybuty-Rate and thermoplastic Starch

Influence of structure of the blend based on polylactic acid, polyhydroxybutyrate and thermoplastic starch (PLA/TPS/PHB) on morphology and mechanical properties was studied. more...

June 30. 2018 - Research news

Fig. 7: Material assignment in a test model. Source: TU Chemnitz

Rubber reinforced with textile cords

Finite Element Models for textile reinforced Rubber Components

The bellows as key component of air springs is made from rubber reinforced with textile cords. more...

June 28. 2018 - Research news

Fig. 1: Experimental setup of high-pressure capillary rheometer test. Source: Institut für Kunststoffverarbeitung RWTH Aachen

Rheometric analyses are performed with a high-pressure capillary rheometer

Investigation of Wall Slippage in Silicone Rubber Compound by means of High-pressure Capillary Rheometer

Compared to organic rubber, silicone rubbers have a lower viscosity and a stronger structural viscosity. more...

June 26. 2018 - Research news

Fig. 8: Temperature distribution of the NR20-sample during biaxial harmonic loading  with a strain amplitude of 60 % at 1 Hz at minimal and maximal strain of the 250th  loading cycle (left and middle) and curves of dissipative heating over time at different strains (right). Source: Leibniz-Institut Polymerforschung, Dresden

A new Biaxial Tester

Biaxial testing System for high static and dynamic Loading of Elastomers and its Applications

For the investigation of elastomers under near-realistic loading, a new Biaxial Tester was designed and tested. more...

June 21. 2018 - Research news

Fig. 2: (a) S-XANES spectra of the unextracted sulfur cross-linked IR and the references for the linear combination fitting method.

Spectroscopy of a sulfidic structure of isoprene rubber (IR)

Effect of solvent Extractions on a linear Combination fitting in sulfur K-edge X-ray Absorption near edge structure Spectroscopy for Sulfur cross-linked Rubber

Necessity of solvent extractions in the linear combination fitting method of sulfur K-edge X-ray absorption near edge structure (S-XANES) spectroscopy is described for evaluation of a sulfidic structure of isoprene rubber (IR) vulcanizate prepared using N-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine as an accelerator, and zinc oxide and stearic acid as activators. more...

June 20. 2018 - Research news

Fig. 3: Plots of ∆α/αt versus α for NR compounds (SEV system). Source: R. H. Schuster EVE Rubber Research Institute 43, Zhengzhou Road 266045 Qingdao, Shandong

The effect of one stage isothermal and two-stage non-isothermal cure on crosslink density, crosslink structure

Investigations on isothermal and two-stage non-isothermal cure of unfilled NR, Nd-IR and S-SBR Compounds

The effect of one stage isothermal and two-stage non-isothermal cure on crosslink density, crosslink structure and stress-strain behavior of unfilled NR, Nd-IR and S-SBR compounds has been investigated. more...

June 20. 2018 - Research news

Fig. 3: Schematic view of a void volume measurement system including filler sample. Source: Anke Blume, University of Twente

Abrasion resistance of silica filled passenger car tire tread compounds

Void Volume Measurement – an alternative Approach to Determine the Initial Structure of Silica

To improve the abrasion resistance of silica filled passenger car tire tread compounds a good dispersion and distribution of the silica in the rubber matrix is required. From the literature it is known that the structure of fillers affects the dispersion process. more...

June 19. 2018 - Research news

Fig. 4: SEM for SBR and SBR/[CmMIM]Br-MH composites.

MgOH as plasticizer and compatibilizer

Mechanical and electrical Properties of SBR Composite filled with modified Magnesium Hydroxide by functionalized ionic Liquid

1-carboxymethyl-3-methylimidazolium bromide ionic liquid [CmMIM]Br IL had been synthesized and reported through quaternization reaction. more...

May 17. 2018 - Research news

Fig. 3: Statorimpregnated inresin NK 50/1K.

Amount of Resin in Winding

Thixotropic Adjustment of Impregnation Resin

Producers of windings of electrical machines require totally fixed winding after impregnation. more...

May 17. 2018 - Research news

Fig. 1: Temperature dependences of PFs for PIR with various content of 6PPD.

Synergy/antagonism in the stabilizer mixture

Performance of Antioxidants for Rubber Matrices evaluated by differential Scanning Calorimetry

The aim of this paper is to present a method for the evaluation of the stabilizing effect of various antioxidants and their mixtures in rubber matrices. more...

May 17. 2018 - Research news

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