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...

Materials

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Riyajan_

Absorbtion of of Mg and Pb

PH-sensitive Absorbent: Anionic Polyacryamide/Cassava Starch Hydrogels containing Natural Rubber for Lead and Magnesium removal from aqueous Solution

The novel absorbent from polyacrylamide (PAM), cassava starch and natural rubber (NR) by microwave assistance were produced to remove lead ion and magnesium ion in aqueous solution. The absorption of Mg2+ and Pb2+ of the novel absorbent increases as function of sample weight due to high site group or carboxylic group of absorbent. The highest […] more...

December 4. 2017 - Research news

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

Klüppel_

Verschleiß von EPDM-Walzen

Influence of thermal Aging on mechanical and tribological Properties of Roller Compounds based on EPDM

Due to mechanical, thermal and chemical impacts, elastomer covered rollers used in plastic-sheets- and printing industry show strong aging and wear. Therefore, elastomer rollers need to be exchanged and newly grinded or covered quite often. This study focuses on the influence of thermal aging on mechanical and tribological properties of roller compounds based on EPDM, […] 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

Kohjiya_

Review

Crystallization of Natural Rubber: Its unique Feature

Crystallization of natural rubber (NR) has been uniquely complicated. This review is to disentangle the complications. Low-temperature crystallization (LTC) is a difficulty when using NR during winter in the early 19th century, overcome by vulcanization. In 1925, strain-induced crystallization (SIC) was firstly reported, but it has remained obscure for long till the advent of time-resolved […] more...

October 9. 2017 - Research news

Jorge Nogueira has take over as Chief Executive Officer of rubber specialist Arlanxeo. (Bildquelle: Arlanxeo)

Leadership Change at Arlanxeo

Jorge Nogueira takes over as Chief Executive Officer from Jan Paul de Vries

Jorge Nogueira has taken over as Chief Executive Officer of rubber specialist Arlanxeo with effect from September 9, 2017. The Argentinian succeeds Jan Paul de Vries, who is leaving the company to seek a new professional challenge. more...

September 11. 2017 - 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

Hopmann_Lipski_

CO2 in Rubber

Optimisation of the Compound Quality of CO2-based Rubber Compounds

To improve the sustainability of rubber products, a new method was developed where CO2 is built into the polymer chain of rubber polymers. With this method it is possible to reduce the CO2-footprint by using a production method for rubber that needs fewer resources and by replacing a significant amount of crude oil by using […] more...

September 6. 2017 - Research news

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

Wiss_4

Interaction between the hydroxyl and siloxane groups

Epoxidized Natural Rubber/ Modified Sepiolite Composites

Sepiolite reinforced Epoxidized Natural Rubber (ENR) composites were prepared by incorporation different loadings of sepiolite. Curing characteristics and mechanical properties were improved. more...

August 4. 2017 - Research news

Wiss_5

Size exclusion chromatography and EPR-spectroscopy

Mechanochemical Halide Modification of Butyl Rubber by Means of Swelling

In the present work the process of mechanochemical halide modification was investigated. By means of size exclusion chromatography and EPR-spectroscopy it was found, that when swell-ing in a solvent, mechanical degradation of the macro molecules of the rubber into macro radi-cals occurred. more...

August 4. 2017 - Research news

Die elektrische Antriebstechnik erfordert nicht nur belastbare und leichtere Werkstoffe, sondern stellt auch weitere hohe Anforderungen wie beispielsweise eine hohe thermische Belastbarkeit.  Bild: Jakub Jirsák – fotolia.com

Ein Werkstoff für das Auto der Zukunft

Silicones for Tomorrow´s Cars

The future of mobility, the experts agree, will be electric. Automotive electronics are becoming increasingly important. A mid-range vehicle nowadays contains as many as 100 electronic control units. Electromobility, digitalization, autonomous driving – the car is being reinvented. more...

June 13. 2017 - Article

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

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