Weltpremiere für den Zwei-Komponenten-AMM-Prozess auf der K 2019: Die Silikondichtung wird an die Gehäuseteile aus amorphem Metall direkt angespritzt. Bildquelle: alle Engel

Combined with polymers for the first time

AMM at K 2019: combined with polymers for the first time

Der Mehrkomponentenspritzguss verzeichnet wachsende Marktanteile – ein Trend, der sich auch weiterhin dynamisch entwickeln wird. Überproportional wachsen Mehrkomponentenanwendungen mit Silikon. Die Gründe hierfür liegen in den besonderen Materialeigenschaften, der sehr guten Verarbeitbarkeit im Spritzguss und der steigenden Zahl geeigneter Materialpartner. Auf der K 2019 in Düsseldorf präsentiert Engel erstmals die Kombination von Flüssigsilikon mit amorphem Metall und eröffnet damit vor allem im Hightech-Sektor neue Horizonte. more...

October 14. 2019 - Tires in

Konkrete Lösungen im Bereich der vernetzten Produktion – Industrie 4.0 – in der Elastomerverarbeitung werden auf der K 2019 präsentiert. Bildquelle: alle Klöckner Desma Elastomertechnik

Sinnvolle Zusammenführung von Automatisierung, Digitalisierung und Prozesssteuerung

Digitization for less Complexity and more Sustainability

Die Zunahme von Komplexität, Flexibilität, Volatilität, sich verkürzender Planungshorizonte, Geschwindigkeit, Präzision und Qualität, setzen bisherige Geschäfts- und Methodenmodelle einem Stresstest und mit teilweise hohem Tempo anzugehenden Veränderungen aus. Das Unternehmen Desma bietet durch die sinnvolle Kombination von Maschinenanwendungen mit digitalen Werkzeugen die Voraussetzungen dafür, dass sich die Elastomerverarbeiter im Wandel der Zeit weiterhin wettbewerbsfähig positionieren können. more...

October 14. 2019 - Tires in

Abb. 1: Chip & Cut Verschleiß bei LKW Reifen.[1]

Testmethods crack growth

Improvement of laboratory predictions regarding crack propagation and wear of truck tire treads

In this paper improved concepts regarding the prediction of dynamic crack growth in truck tire tread compounds under praxis conditions are presented and optimized with respect to the special application „chip & cut wear“ appearing under high severity conditions. more...

October 9. 2019 - Research news

Fig. 1: Screw configuration used in present work.

Response Surface Methodology

Effects of the Extrusion Parameters of a Co-Rotating Twin Screw Extruder and their Interactions on the Properties of Carbon Black filled Styrene-Butadiene Rubber

The filler dispersion in a premixed compound prepared using an internal mixer was further improved by an intermeshing co-rotating twin screw extruder (TSE). more...

October 7. 2019 - Research news

Abb. 13: Querschnitte von Stahlseilen mit Elastomer-Anhaftungen nach abgeschlossenen Festigkeitsuntersuchungen zur Beurteilung der Elastomer-Durchdringung: Versuchsreihe 7 bei konventionellem Heizverfahren (links) und Versuchsreihe 8 bei kombiniertem Heizverfahren und  (rechts).

Vulcanization of Conveyor Belts

An Inductive Heating Method for Manufacturing of Plastic Metal Composites in Application for Splices of Steel Cord Conveyor Belts – Part 2

Steel cord conveyor belts are used on belt conveyors to transport bulk materials. more...

October 4. 2019 - Research news

Fabio Bacchelli_

S-SBR with Bio-Plasticizers

Matching processability, Performance and Sustainability in SBR Compounds

It is well known, that solution polymerization of SBR allows a better control of microstructure and chain architecture for optimum performance of the vulcanizate than emulsion polymerization. more...

October 1. 2019 - Research news

Fig. 1: Uncovered load bearing elements of bias truck tire.

The influence of neglecting cord shrinkage and cord characteristic linearization on simulation results

Burst Test Simulation for bias Truck Tire

A model of a pneumatic bias tire based on the technique of overlaying the orthotropic reinforcing elements on isotropic rubber elements is presented. more...

September 13. 2019 - Research news

Fig. 3: Comparison  between the times of maximum intensity for the compositions of GEB NR and Latex NR.

The influence of the used methods of processing for incorporating mica as filler into the NR

Determination of Aging behavior of natural Rubber Nanocomposites reinforced with Mica prepared by Latex or Melt mixing Technology

The aim was to research the aging behavior of natural rubber compositions (NR) with synthetic mica by chemiluminescence (CL), in comparison with the traditional test of accelerated aging in forced air circulation with respect to the stress strain properties. more...

September 12. 2019 - Research news

Fig. 2: UFR of oligoisoprene synthesized inmethyl alcohol solution: conversion curve (a) and second-order curve (b). [OH] = 0.963 eqv. L-1

The kinetics of the urethane formation reaction between hydroxyl-containing oligodienes HTPB obtained

Urethane Formation Reaction in Oligodienes Obtained in Solutions of Alcohols under the Action of Hydrogen Peroxide

The kinetics of the urethane formation reaction between hydroxyl-containing oligodienes HTPB obtained by the action of hydrogen peroxide in alcohol solutions, and phenyl isocyanate has been studied. more...

September 11. 2019 - Research news

Fig. 5: Determination of the crosslink density by the Mooney-Rivlin approach.

The crosslink density of rubber compounds influences the in-rubber properties of the final product to a great extent

Determination of the Crosslink Density of Tire Tread Compounds by Different Analytical Methods

The crosslink density of rubber compounds influences the in-rubber properties of the final product to a great extent. more...

September 10. 2019 - Research news

Abb. 5: Konzept einer Vulkanisierpresse mit laufseitig zwischen Heizplatte und Fördergurt angeordnetem Induktor (teilweise in Schnittdarstellung).

A new heating method for use in vulcanizing presses

An Inductive Heating Method for Manufacturing of Plastic Metal Composites in Application for Splices of Steel Cord Conveyor Belts – Part 1

This paper examines a new heating method for use in vulcanizing presses in which the tension members of a steel cord conveyor belt are inductively heated to use them as an additional source of heat. The effects of this method on the strength of a belt splice are analyzed and the examination results are generalized for various belt types used in practice. more...

September 9. 2019 - Research news

Its lasting high Young’s modulus at higher temperatures is one remark­able advantage of rayon as reinforcement for high performance mechanical rubber goods.  Copyrigth: all Cordenka

Prompt brake pressure generation contributes to automotive safety

Advanced Rayon Brake Hose Reinforcement

Cordenka rayon is a high tenacity man-made fiber based on cellulose extracted from wood. Its key property is a high Young’s modulus that is performed constantly in a temperature range between -40 and +120 °C. This feature as well as rayon’s low thermal shrinkage, its good resistance to chemicals and its sustainable raw material origin have made rayon popular as reinforcing material for automotive tires and brake hoses. more...

August 7. 2019 - Tires in

Fig. 3: Stress-strain curves in the longitudinal direction of different cured composites.

PALF-filled Rubber

Improvement of Stress Transfer in short Pineapple Leaf Fiber reinforced Nitrile Rubber

This work demonstrates a highly efficient method for the improvement of stress transfer in acrylonitrile butadiene rubber (NBR) hybrid composites reinforced with short pineapple leaf fiber (PALF) by adding carbon black and using a specific mixing method. PALF-filled rubber was prepared as a masterbatch, use of which improved the final dispersion. more...

August 6. 2019 - Research news

Fig. 9: SEM of rubber mixes containing chopped carbon fibers and carbon black.

Characterize Compounds and Vulcanizates

New Trends in Natural Rubber Nano Composites

The aim of this study is to investigate the effect of rice husk fibers in absence and in presence of carbon black on the rheological, physical and mechanical properties of rubber composites and vulcanizates. more...

August 5. 2019 - Research news

Fig. 1: Raman spectra of alkanes, the enlargement of the C H stretching vibrations, and a further signal in the area of symmetrical vibrations of CH2. Raman spectra are compared with the IR spectra of n-hexane (right hand).

A spectroscopic Method for predicting Viscosity

Correlation between molecular and spectroscopic Properties of Polymers

The Mooney viscosity (MV) of rubbers is known to be an important processing parameter in the rubber industry. more...

August 2. 2019 - Research news

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