Artikel
Halogen Free Flame Retardant (HFFR) Compounding with EVM and EVM/HNBR
. - EVM and HNBR are halogen free. If properly compounded, both polymers feature excellent fire safety performance, good oil- and media- as well as ozone- and UV-light-resistance. These inherent characteristics, combined with a broad temperature range for continuous use (if properly compounded: -50... 
Artikel, 21.03.2011
High Performance Nanocomposite based on Organoclay and Blends of Different Types of SBR with BR
. - Nanocomposites based on SBR/BR blends and organoclay (Cloisite15A) in presence of carboxylated nitrile rubber (XNBR) used as compatibiliser were prepared by employing a solution process as well as mechanical mixing on two-roll mill and internal mixer. The dosage of organoclay and XNBR was...
Artikel, 11.02.2011
Effect of MWCNT-Dispersion in NBR-Compounds
. - The challenge involved in using MWCNT, an innovative raw material coming into the market in quantities of several hundred metric tons per year, is to transfer the properties of single nanotubes (extreme strength, very high electrical and thermal conductivity) from the microscopic range to a...
Artikel, 11.02.2011
New Possibilities for Cold Plasma Modification of Furnace and Acetylene Carbon Black
Some new possibilities for modification of furnace and acetylene carbon blacks by using cold plasma of oxygen, combination oxygen /ammonia and acrylic acid vapour are investigated. The surface treatment leads to appreciable change in the modulus at 100 and 300 % of elongation and in heat builtup,...
Artikel, 9.12.2010
Interpretation of Filler Networking of Loaded Rubbers via Mastercurves
Dynamic mechanical analysis at different temperatures and frequencies of Carbon Black and Silica loaded rubbers is carried out and mastercurves are created. For higher filler loadings poor coincidence of the isothermal curves can be observed. In this case no proper mastercurves can be constructed...
Artikel, 9.12.2010
Cure and Viscoelastic Properties of HNBR
Effects of Carbon Black Loading and Characteristics - Cure, viscoelastic and mechanical properties of HNBR filled with various types of carbon black were investigated. By increasing carbon black loading and specific surface area, cure promotion was observed which could be explained by a combination of thermal history, surface chemistry and thermal...
Artikel, 15.11.2010
Azides as Effective Curing Agents for Saturated EPM-Rubber
Efficiency and Reactivity - Azides are known as a class of organic compounds that are very reactive, amongst others towards alkenes and alkanes. At elevated temperatures the azide-group decomposes, releasing a nitrogen molecule and creating a highly reactive nitrene species, which is able to react with fully saturated...
Artikel, 17.08.2010
Silica Obtained Via Pyrolysis of Waste “Green” Tyres
A Perspective Filler for Rubber Industry - A solid product (named SiO2D) is obtained as a result of subjecting the tread of “green” tyres to pyrolysis in the presence of water vapour. It has been found by FT-IR and EDX-RF spectroscopy that the product contains 30 % of carbon, 65 % of SiO2, 3 % of ZnO and 2 % of other components. The...
Artikel, 17.08.2010
Mechanical and Oil Resistance Characteristics of Rubber Blends Based on Nitrile Butadiene Rubber
Different rubber blends based on nitrile butadiene rubber, NBR (N3980–39% acrylonitrile) have been prepared to get a product with high oil resistant and good mechanical properties. The obtained mixes included NBR, chloroprene rubber (CR) and polyvinyl chloride (PVC). The ratio of each component...
Artikel, 12.05.2010
Influence of TESPT on the Physico- Mechanical and Dielectric Properties of Silica Filled SBR Composites
Bis (3-triethoxysilylpropl) tetrasulfide (TEPST) was found to affect the curing characteristics, physico-mechanical, and dielectric properties of styrene butadiene rubber (SBR) samples filled with precipitated silica. The dielectric properties of these samples were studied by means of broadband...
Artikel, 10.12.2009
Synergism of Mistron Talc with Carbon Black
Used in addition to or as a partial substitution of carbon black in rubber compounds, Mistron Talc significantly improves processing properties (i.e. viscosity and mold flow) and mechanical properties (i.e. elongation at break). Cut/tear resistance of vulcanizates is significantly enhanced with...
Artikel, 10.12.2009
Expectation and Reality
Carbon Nanotubes as Filler for Elastomers - Three of the main carbon nanotubes intrinsic characters: mechanical, electrical and thermal properties and how the filler loading and dispersion state affect the same physical properties of corresponding nanocomposites are discussed. This survey underlines the prominence of the polymer/solid...
Artikel, 11.11.2009
Physico-Mechanical and Dielectric Properties of Nitrile Rubber Filled with Silica and Mica
The physico-mechanical and dielectric properties of NBR filled with increasing amounts of silica and mica were studied. The compound containing 25phr silica was found to possess the most promising properties. Moreover, the addition of mica to the NBR / silica vucanizates slightly affects the...
Artikel, 14.09.2009
Functional Fillers for Rubber
Surprising New Insights into the Apparently Well Known Neuburg Siliceous Earth - On the basis of scientific results for Neuburg Siliceous Earth in comparison with a representative quartz sample “DQ12” and because of the high degree of its crystallographic disorder we can assume that the SiO2modification in Neuburg Siliceous Earth must be structurally different from quartz...
Artikel, 14.09.2009
Online Measured Electrical Conductance
In-Process Characterization of the Dispersion Behavior of Carbon Nanotubes in Rubber Compounds - The mechanism of CNT dispersion in rubber matrices was studied by the analysis of the morphological development on macro- and microscale by optical and electron microscopy as well as atomic force microscopy. The results from the morphological assessment were correlated to the time dependent...
Artikel, 12.06.2009
Influence of Carbon Black on Reinforcement and Gamma- Radiation Resistance of EPDM/ CSM CR/CSM Rubber Blends
The curing behavior, mechanical properties and gamma-radiation aging of carbon black filled elastomer blends based on EPDM/CSM and CR/CSM were investigated. The vulcanization characteristics were assessed for CR/CSM and EPDM/CSM rubber blends (50:50, w/w) using oscillating disc rheometer. The...
Artikel, 12.06.2009
Effect of Thiophene-Plasma Coating of Silica on the Reinforcing Performance in EPDM, SBR and NBR
The filler surface chemistry is a crucial factor for the level of dispersion and filler-polymer interaction in rubber. Plasma-polymerization allows tailoring the surface chemistry without influence on the bulk properties. Thiophene was used as monomer in this study due to its sulfur moiety, and...
Artikel, 12.06.2009
Advanced CB Characterizations to Better Understand Polymer-Filler Interaction
A Critical Survey - By using advanced techniques, to characterize CB, a new way of looking at that important material is possible. It emphasizes the nanometer scale at which the filler-polymer interactions take place. Also previous characterizations are reviewed emphasizing their limit to describe unequivocally the...
Artikel, 13.05.2009
Investigation of Fracture Mechanical Properties of Filler- Reinforced Styrene-Butadiene Elastomers
The paper describes experimental procedures and results of various fracture mechanical tests executed under different loading conditions: cyclic tests with a Tear-Fatigue-Analyser (TFA), impact tests and quasi-static tests. The materials investigated are solution-SBR vulcanizates reinforced with...
Artikel, 13.05.2009
Micro-Level of Polymer-Filler Interaction
A challenging task for future developments in the rubber industry is a virtual material design based on computer simulations. In this paper, we are presenting a basic study of polymerfiller interaction by modeling adhesion behavior through constitutive-like assumptions for the interface. We treat...
Artikel, 16.04.2009
Mixing Aspects of Sulfron 3001 in Carbon Black Compounds
The mixing of Sulfron 3001 in carbon black compounds is described in this paper. The temperature-time profile of mixing between Sulfron and carbon black plays a critical role in realizing the positive effect of Sulfron on hysteresis characteristics. It has been shown that at a mixing temperature...
Artikel, 11.03.2009
Surface Modification of Carbon Black by Plasma Techniques Influence on the Vulcanization Reaction
Although vulcanization has been used since a very long time its reaction mechanism and kinetics are still not completely clarified. In this work the influence of plasma modification (O2, N2, NH3) of carbon black in the vulcanization reaction and kinetics using CBS as accelerator were studied both...
Artikel, 11.03.2009
Molecular Dynamics of Silica and Organoclay Filled XNBR-Nanocomposites
To evaluate the effects of nanostructured fillers like organoclay and silica on polymer dynamics close to filler interfaces a carboxylated nitrile rubber was investigated by dielectric and dynamicmechanical spectroscopy. Three relaxation processes have been detected. The relaxation processes at...
Artikel, 12.02.2009
New Developments in Rubber Reinforcement
Elastomeric materials are often compounded with reinforcing fillers to improve their mechanical properties. The effectiveness of a filler depends on filler characteristics such as size and shape of the particles and more significantly on the strength of polymer-filler interactions. The effect can...
Artikel, 12.02.2009
Influence of Silanization on Dynamic-Mechanical Properties and the Distribution of Silica in NBR/BR Blends
The influence of surface modification of precipitated silica by defined silanization on filler-rubber interaction and filler distribution in NBR/BR blends is investigated. A linear increase of the maximum value of the loss modulus in the glass trasnsition regime is not only caused by the increase...
Artikel, 2.10.2008
Elastomers Filled with Metal Coated Carbon Black
Metal-coated carbon black (MCCB) filled rubber composites have been investigated with respect to ferromagnetic characteristics of the fillers and to mechanical properties of the compounds in comparison to non-coated carbon black filled rubbers. The magnetic carbon black particles are specifically...
Artikel, 13.09.2008
Synthesis of Silica in Natural Rubber Solution via Sol-Gel Reaction
In this study, the in situ silica was generated in natural rubber by sol-gel reaction. The effects of solvent, catalyst type and concentration, mole ratio of tetraethoxysilane (TEOS) to water, and reaction temperature on in situ silica formation were investigated. TEOS was used as the precursor...
Artikel, 14.04.2008
Effect of Fumed Silica Surface Area on Silicone Rubber Reinforcement
The effects of fumed silica on the processability and vulcanizate properties of silicone rubber have been studied using fumed silicas with surface areas ranging from 90 to 417m2/g at a constant loading of 38phr. The results show that all rheological properties of the compounds and mechanical...
Artikel, 17.03.2008
Application of Lignins in Rubber Compounds
The possibility of lignin application was studied in rubber blends based on NR and SBR. Three types of either unmodified or modified lignin powder were tested as fillers for rubber blends. The influence of lignin on the vulcanization process, the mechanical properties, the morphological structure...
Artikel, 19.02.2008
Reinforcement of Rubber Compounds with Nano- Filler
Nano CaCO3 is one of the many emerging applications of nanotechnology that is already finding successful commercial application. Reinforcing effect of Nano CaCO3 in different compounds – NR and NR/NBR blend used in Sports Goods (laminated sheet for inflated balls), NR based cycle tube,...
Artikel, 9.11.2007
