Mechanical properties

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

Wiss_3

Dielectric properties

Structural and Physical Properties of Biowastes filled Acrylonitrile Butadiene Rubber

Es wurden Komposite aus Acrylnitrilkautschuk (NBR), Dattelsamen (DS) und getrockneten Granatapfelschalen (PP)- Puder hergestellt und der Einfluss der Dattelsamen und der Granatapfelschalen auf die Morphologie, sowie auf die mechanischen und dielektrischen Eigenschaften überprüft. more...

August 4. 2017 - Research news

Gomaa_Aly

PALS

Free Volumes and their Distribution in SiR/EPDM Rubber Blends probed by Positron Annihilation Lifetime Technique

The nanoscale free-volume holes sizes, fractions and their size distributions in silicone rubber (SiR), ethylene propylene diene rubber (EPDM) and their blend (SiR/EPDM) are characterized by positron annihilation lifetime spectroscopy (PALS). The results show that EPDM has an estimated smaller free-volume hole size of 193.4 Å3  with a fraction 9.10 % as compared to the corresponding […] more...

May 2. 2017 - Research news

Ali Abbasian_

Biobased Oil

Vegetable Oils: Sustainable Resources to Replace High Aro- matic Oil in Rubber Compounds

Two types of raw vegetable oils, i.e. sunflower oil (SFO) and soybean oil (SBO), were investigated in Styrene Butadiene Rubber (SBR)- based formulation in comparison with high aromatic oil compound. A myriad of physical, mechanical and dynamic rubber tests were conducted along with some compatibility and processability investigation tests. Replacing aromatic oils by SFO and […] more...

August 4. 2016 - Research news

Sirisinha_Unbenannt

Sartomer TRIM and Sartomer ZDA

Mechanical Properties of Peroxide/Coagent cured hydrogenated acrylonitrile butadiene Rubber: Effect of Processing Aids

Cure and mechanical properties of carbon black filled hydrogenated acrylonitrile butadiene rubber (HNBR) incorporated with various types and loadings of additives acting as processing aids  were investigated. With increased loadings of Sartomer TRIM and Sartomer ZDA, a crosslink promotion phenomenon was observed which could be explained by the presence of unsaturated structure in these additives. […] more...

June 9. 2016 - Research news

Stabilisatoren für EPDM und NBR

Mehrzweck-Additiv für Ethylen-Propylen-Dien- und Acrylnitril-Kautschukmischung

N-Methyl-p-Phenylendiamin und epoxidiertes Öl wurden zu einem Addukt (Am -ep) umgesetzt. Dieses Addukt wurde in Ethylen-Propylen-Dien-Kautschuk (EPDM) und Acrylnitril-Kautschuk (NBR)-Mischung verwendet, um verschiedene Eigenschaften dieser Mischung zu erhöhen. more...

September 16. 2015 - Research news

TESTING AND MEASURING

Influence of the Carbon-Silica Reinforcing Filler, Obtained via Pyrolysis of Waste “Green” Tyres on the Properties of EPDM Based Composites

The paper reports on the effect that the solid product from pyrolysis-cum-water vapour of waste green tyres (SiO2D), has upon the properties of EPDM based composites. The results have shown that in the course of pyrolysis the silanol groups over the surface of silica used as filler of the rubber vulcanizates subjected to pyrolysis are preserved in the final product of that process. more...

June 19. 2015 - Research news

Rubber

Effect of uniaxial Deformation and Relaxation of Rubber/Carbon black Composites on their electrical Properties

Two composites with elastomeric matrices, namely EPDM and SBR, filled with elecroconductive carbon blacks were tested regarding the effect of mechanical deformation of the testing specimen on electrical conductivity of the material. Both decrease as well as increase of electric current was observed during the mechanical deformation or recovery. more...

May 19. 2015 - Research news

Polyurethanes & Thermoplastics

Effect of Beta Irradiation on Mechanical Properties of Surface Layer of Injection Moulded High Density Polyethylene (HDPE)

The influence of beta radiation on the changes in the structure and selected properties (mechanical and thermal) polymers were proved. The specimens of high density polyethylene (HDPE) were made by injection moulding technology and irradiated by low doses of beta radiation (0, 33, 66, 99, 132, 165 and 198 kGy). more...

May 19. 2015 - Research news

Rubber

Rheological and mechanical Properties of biodegradable polymer Blends based on Polylactic Acid and Polyhydroxybutyrate

The present work is focused on study of rheological and mechanical properties of biodegradable polymer blends based on PLA/PHB combination. Flow curves and processing stability was measured using the oscillation rheometry. Effect of PLA/PHB ratio on processing stability as well as mechanical properties was investigated. more...

May 19. 2015 - Research news

Materials

Optimization of Mixing Conditions for TESPT Silane Treatment in Silica-filled NBR System: Correlation of Bound Rubber Content to viscoelastic and mechanical Properties

Nitrile rubber (NBR) filled with precipitated silica (PSi) was prepared with an addition of bis-(triethoxysilylpropyl)-tetrasulfide (TESPT) under various mixing conditions. As a highlight of this work, the peroxide crosslinking was employed instead of conventional sulfur vulcanization in products requiring enhanced thermal aging resistance. more...

June 25. 2014 - Research news

Polyurethanes & Thermoplastics

Partial Replacement of PVC by Lignin as a Sustainable Alternative to nonrenewable Materials

Blends from PVC/soda lignin and PVC/acetic acid lignin were prepared and characterized by ATR-FTIR spectroscopy, SEM, TGA and DSC. ATR-FTIR and SEM measurements revealed miscibility of the blends containing 10 - 40 wt.% soda lignin and 10 - 30 wt.% acetic acid lignin. more...

June 25. 2014 - Research news

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