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Scheme 1: Processing  methods of sample  preparation for actuation measurements

In this work, multi-walled carbon nanotubes and multilayer graphene were used to improve the properties of rubber composites

Rubber Composites based on Carbon Nanotubes, multilayer Graphene and their Hybrid: A comparative Study

In this work, multiwall carbon nanotubes (CNT) and multilayer graphene (MLG) with 18-20 graphene layers were used to improve the properties of the rubber composites. more...

September 21. 2021 - Research news

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Critical Gel

Critical Gel and Rubber Curing Cycle Design

Compounds with large cross-sectional thickness must reach a satisfactory “state of cure” by the end of the residence molding cure time to prevent porosity at demoulding. more...

August 20. 2021 - Research news


Systematic process investigations on a rubber extruder

Optimization Approaches in Rubber Extrusion for Energy and CO² Savings

Systematic process investigations on a rubber extruder (40 mm, 16D) show on the basis of enthalpy increase, that the specific energy input is 0.3 - 1.7 kWh/kg and the thermal efficiency is in the range of 1 - 12 %. more...

June 15. 2021 - Research news

Figure 1.  Heat and Oil Resistance of Elastomers used in Automotive.

Heat- and Oil-Resistance of ACM

Next-Generation Polymer Solutions for Sealing and Fluid Transport in High-Performance automotive Transmission Systems

In dieser Publikation wird die nächste Generation der HyTemp HT-ACM Technologie vorgestellt, welche zeigt, wie diese neuen Materialien gleichzeitig die Grenzen der Tieftemperaturleistungsfähigkeit bis zu - 40 °C und die Hitzebeständigkeit bis über 175 °C verbessern, während die mechanischen Eigenschaften von Dichtungen in niedrigviskosen Getriebeöleinsatz erweitert werden. more...

May 25. 2021 - Research news


Magnetic Rubber Compounds

Magnetic and mechanical Characterisation of Rubber bonded hard Ferrites Composites

The mechanical and magnetic properties of hard ferrite filled rubbers are investigated. Different compounds based on acrylonitrile butadiene rubber (NBR) and hydrogenated acrylonitrile butadiene rubber (HNBR) were manufactured and analysed. The magnetic fillers OP-71 from Dowa and FA-700 from Toda Kogyo were used. The compounds were mixed in an internal mixer and subsequently processed in […] more...

May 18. 2021 - Research news


Biobased Encapsulation

Fabrication and Properties of Cellulose Fiber / Soybean Meal / Natural Rubber Matrix for Encapsulation of Urea Fertilizer

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. more...

April 27. 2021 - Research news


NR/SBR-Blends of Tire-treads

Cut and Chip Properties of Tire Rubber Compounds

Cut and Chip properties of tire tread along with other physicals were examined for entire range of NR/SBR blends ratio, impacts of Sulphur/ Accelerator ratio, Sillica as partial replacement of Carbon Black, Resins and specific short fiber. more...

March 5. 2021 - Research news

Sumitomo Rubber Industries, Ltd.

Mechanisms of the mechanochemical reactions during the wear process

Effect of Molecular Structure on the mechanochemical Wear Behavior of hydrogenated and conventional SBR Rubbers

Effect of hydrogenation on the styrene-butadiene rubber (SBR) in terms of the mechanochemical wear behavior was studied focusing on the mechanisms of the mechanochemical reactions during the wear process. more...

February 15. 2021 - Research news


Colloidal properties of different carbon black (CB) grades

Fourier Transform Rheology – an innovative Tool for the Characterization of recovered Carbon Black

Colloidal properties of different carbon black (CB) grades represented by their structure and specific surface area were characterized before and after pyrolysis. Additionally, rubber compounds produced with these fillers were investigated by Fourier Transform (FT) Rheology, since the nonlinear, rheological behavior of filled elastomers under specific conditions is associated with the filler-polymer interaction. For comparison, […] more...

February 10. 2021 - Research news

Fig. 1: Construction of an electrical cable showing various layers of different functional materials.

Rubber for current-carrying applications

New EPDM Grade Keltan 2470E for excellent electrical Performance in Wire and Cable Applications

Keltan 2470E is a new EPDM grade developed to satisfy the specific requirements of electrical wire and cable applications and was launched to market in 2018. more...

September 3. 2020 - Research news

Fig. 1: Rheometer curves for EPDM vulcanised at 160°C with variation of the amount of sulfur curatives.

Network density and the compression set as a function of temperature

Sulfur Vulcanisation of low- vs. high-unsaturated Rubbers (IIR & EPDM vs. NR & BR):

In this study the sulfur vulcanisation of four different, apolar rubbers, viz. IIR, EPDM, NR and BR, in gum compounds over the same range of sulfur curatives contents is compared. more...

June 10. 2020 - Research news

Die Richtlinien für Produkte aus Elastomeren für Anwendungen mit Trinkwasserkontakt werden seit einigen Jahren überarbeitet –  2021 endet die Übergansgfrist für die Rohstoff-Rezepturen. Bildquelle: gemenacom – stock.adobe-com

Elastomermischungen gemäß der Elastomerleitlinie nach 2021

Elastomer compounds for use after 2021

Zum 31.12.2021 endet die Übergangsfrist der Elastomerleitlinie des Umweltbundesamts (UBA), die zur Beurteilung von Elastomeren in Kontakt mit Trinkwasser dient. Bislang etablierte, schwefelvernetzte Mischungen im Trinkwasserbereich dürfen ab diesem Zeitpunkt nicht mehr verwendet werden. Gummiwerk Kraiburg ist es gelungen, eine Mischung herzustellen, die auch nach 2021 in Elastomeranwendungen für den Trinkwasserbereich eingesetzt werden kann. more...

May 20. 2020 - Tires in

Fig. 2: Block diagram for the preparation of GNP-SP adduct.

Natural Rubber latex with graphene Nanoplatelets (GNPs)

Effect of the Functionalization of graphene Nanoplatelets with a Janus Pyrrole Molecule on mechanical and electrical Properties of natural Rubber Nanocomposites

Nanokomposite wurden durch Mischen von NR-Latex mit Graphene Nanoplatelets (GNPs) hergestellt, die mit einer Janus Pyrrol Komponente durch einen einfachen, nachhaltigen Prozess mit einer sehr hohen Atom- und Kohlenstoffeffizienz nahezu zu 100 % funktionalisiert wurden. more...

April 14. 2020 - Research news

Fig. 1: Schematic diagram of interaction of Silica with TESPT/ PDMS-OH / PIBSA.

Tire Rubber Componding

Effect of a Polydimethylsiloxane and Polyisobutylene Succinic anhydride on the mechanical and dynamic Properties of Silica filled SBR Compounds

The effect of addition of hydroxyl terminated polydimethylsiloxane (PDMS-OH) and polyisobutylene succinic anhydride (PIBSA) on the dispersion of silica in E-SBR (emulsion polymerised SBR) is investigated. E-SBR / silica compounds with hydroxyl terminated polydimethylsiloxane (PDMS-OH) and poly -isobutylene succinic anhydride were prepared and characterized for static, dynamic and morphological properties. Addition of PDMS-OH and PIBSA […] more...

February 13. 2020 - Research news

Tire abrasion is a source of so-called microplastics in the environment. Copyright: cunaplus/

ENR – a sustainable Rubber Solution for Tire Formulations

Epoxidized Natural Rubber with Surface-modified Silica as a Filler

The current discussion about environmental influences of microplastics and tire-road wear grew interest in naturally grown rubber as a replacement for synthetic rubber recently. Besides Natural Rubber in its variety of grades special rubbers with a high glass transition temperature are needed to produce acceptable properties for many applications. Epoxidized Natural Rubber (ENR) could be a candidate. The use of tailor-made surface-modified silica grades in ENR greatly improves abrasion values. more...

February 12. 2020 - Tires in