High quality in Multi-component injection molding

This paper is focused on a new adhesion-modified TPE-V series called Alfater XL 4PA0010 for high quality PA-based hard/soft combinations. These adhesion-modified TPE-V grades offer good bonding to a broad range of PA6 and PA66 including non-reinforced, glass fiber reinforced, and impact-modified PA. They are suitable for conventional 2-shot injection molding as well as for cold insert molding. Influences on the bonding, like the injection molding conditions or additives in the compounds or furthermore high moisture contents of PA have been examined. more...

Additives & Fillers

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W.Y. Ali

Tribology of CNT filled Epoxy

Tribological Behavior of Epoxy Reinforced with Carbon Nanotubes and filled by Vegetables Oils

The influence of reinforcing epoxy by carbon nanotubes (CNT) and filling by different types of vegetables oils (olive, corn, sunflower, sesame, almond and paraffin oil) on the friction coefficient (µ) and wear resistance is investigated. CNTs of 0.25, 0.5, 0.75 and 1 wt. % content have been added to epoxy matrix mixed by 10 wt. […] more...

November 29. 2017 - Research news

Akcakale

Rice Husk Powder in Rubber

Effects of carburized Rice Husk Powders on physical Properties of Elastomer based Materials

In this study the effects of carburized rice husk (CRH) powders on the mechanical properties of SBR (SBR 1502) / waste rubber type elastomer based materials were investigated. In addition to the calcite and rubber powder fillings in the general composition of a rubber formula used in footwear production, CRH obtained by the Proliz method […] more...

October 9. 2017 - Research news

Noordermeer_

Increased Young’s modulus

Understanding the Behavior of the Coupling Agents TESPT and SI 363 in short-cut Aramid Fibre reinforced Elastomers

In this study the coupling agents Bis-(triethoxysilylpropyl) tetrasulfide (TESPT) and mercaptopropyl-mono-ethoxypolyether-silane (Si 363) are compared to each other in a standard SBR formulation for adhesion-activated epoxy-coated short-cut aramid fibres. Comparing TESPT with Si 363 with the help of a design of experiments approach gives a better understanding of the relevant factors, in order to judge […] more...

September 11. 2017 - Research news

Azza_Ward_

Magnetic and dielectric Properties

PMMA Nanocomposites based on Laser fragmented Fe3O4 Nanoparticles

Laser photo fragmentation technique has been utilized as a versatile method to produce magnetite (Fe3O4) nanoparticles. It was found that, the diode laser beam with wavelength 808 nm is the most effective one, as it reduces the particle size of Fe3O4 to 5.5-26 nm. Casting technique was used to prepare nanocomposites based on polymethyl methacrylate […] more...

September 8. 2017 - Research Result

Amornsakchai_

Stress-Strain Curves of BR, NBR and SBR

Synchrotron WAXS Studies of stretched Natural and Synthetic Rubber Networks showing an Upturn in Stress-Strain Curves*

Natural rubber (NR) displays very distinct stress-strain curve with an upturn in the stress at high elongations while most synthetic rubbers do not. This behavior has been associated with strain-induced crystallization. Here we show that three non-crystallizing weak synthetic rubbers, i.e. BR, NBR and SBR, could be reinforced in such a way that their stress-strain […] more...

September 1. 2017 - Research news

Moneer_Scheme 2.tif

WSHAT

Effects of some Parameters Affecting Designing of Nano-Water Hydrophobically Associating Polymers in Aqueous Solution

A novel series of water-soluble hydrophobically associating terpolymer (WSHAT) nano particles with optimum thickening effect were successfully synthesized via free radical emulsion polymerization using ethyl acrylate (EA), methyl acrylic acid (MAA), polymerizable surfactant (AS-25 MA) and N-methylol acrylamide (NMA).The terpolymers were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), Size Exclusion Chromatography […] more...

June 9. 2017 - Research news

Dr. Volker Börger_

Vamac, HP Zetpol, HT-ACM

The Use of New Additives in the Processing of White And Black Filled Compounds Based On The Diamine Crosslinking System

The benefits of a new additive range for use in diamine crosslinked polymers from Schill+Seilacher “Struktol” GmbH are demonstrated. Rubber Compounds were mixed based on AEM (Vamac) – and HNBR (HP Zetpol) polymers. Struktol HT 740, Struktol HT 750 or Struktol HT 760 demonstrated different activity levels towards the surface of active white fillers and […] more...

June 9. 2017 - Research news

Hudec

Influence of Natural Filler

EPDM Composites filled with Corn Starch and thermoplastic Starch

In den letzten Jahren ist die chemische Industrie auf die Erforschung und den Einsatz von natürliche Quellen ausgerichtet, z. B. von Lignin, Cellulose und Stärke. Eines der Hauptprobleme für Gummiprodukte ist durch den konstant anwachsende Gummiabfall verursacht, dessen Deponierung und dem Mangel an Möglichkeiten der Reduzierung. Es wurde der Einfluss von natürlichen Füllstoffen auf den […] more...

June 9. 2017 - Research news

Rozik_

Waste Carbon as Additive

Mechanical and electrical Properties of Acrylonitrile Butadiene Rubber filled with Waste Carbon

Waste carbon is widely used in a variety of industrial applications which include separation / purification of liquids and gases, removal of toxic substances from waste water, as catalysts and catalyst support. Waste carbon composites could also endure wide thermal ranges, making them valuable in thermo-mechanical applications such as the automotive industry. From carbon we […] more...

April 10. 2017 - Research news

Denise_Belusova

Magnetic Properties of Elastomers

Magneto-Active Elastomers: Effect of the Particle Dispersion on the Switching Ability

As magneto-active elastomers rubber composites based on highly elastic polymer matrix filled with magnetic barium ferrite (BaFe12O19) particles were investigated. Due to the high ratio of surface to volume and magnetization are magnetic particles prone to aggregate. To enhance the dispersion and the compatibility between the particle and the rubber matrix a functionalization of the […] more...

March 7. 2017 - Research news

Additive

Saves Mixing Time and improves Compatibility

At Tire Technology Expo 2017 Evonik will present Vestenamer, a process additive with unique properties for efficient tire production. The process additive simplifies the mixing and production of various tire compounds. more...

February 9. 2017 - Product Review

Anand_

ZnO-Nanoparticle-Filler

Effect of nanoparticulate Zinc Oxide on the Properties of natural Rubber Vulcanizates produced by Latex Compounding

Zinc oxide (ZnO) plays a major role in the accelerated sulphur vulcanization process. Nano ZnO at different levels were incorporated into natural rubber latex (NR) and the properties of the resulting vulcanizates were compared with conventional micro ZnO incorporated into films. The latex compounds (containing micro and nano ZnO) were cast into sheets and cured. […] more...

February 7. 2017 - Research news

The business unit supplies the rubber industry with a broad range of predispersed polymer-bound additives, processing promoters, vulcanization and filler activators, anti-sun check waxes, release agents, tire marking paints and high-performance curing bladders. Picture: Lanxess

Additive

Single-release Inside Lubes for Cleaner Tire Production

The Lanxess Rhein Chemie Additives business unit will present a variety of solutions for tire-makers at the Tire Technology Expo. This includes its comprehensive portfolio of eco-friendly Rhenodiv tire release agents, Rhenomark tire marking paints, Rhenoshape tire curing bladders and Rhenogran aramid fiber masterbatches. more...

February 7. 2017 - Product Review

Jan Kruzelak_

Curing Systems and Curing Processes

Sulfur and peroxide curing of Rubber Compounds based on NR and NBR. Part I: cross-linking and physical-mechanical Properties

NR- and NBR- compounds were prepared by applying a mix of sulfur and peroxide curing systems. The aim was to investigate the influence of curing system composition on curing process and physical-mechanical properties. The determination of cross-link density and the structure of cross-links were under concern. All parameters were changed in dependence on the composition […] more...

February 6. 2017 - Research news

Additive

Reach-compliant Process Oils

Showcasing its range of Reach-compliant plasticisers will be a priority for Total Special Fluids. They are compatible with the main rubbers used in tire formulations. more...

February 2. 2017 - Product Review

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