Effect of aging and carbon black on the mechanical properties of EPDM rubber

Crosslinked samples based on poly(ethylene-co-propylene-co-2-ehylidene5-norbornene) EPDM rubber, carbon black as active filler and natural chalk as inactive filler were cured with sulphur. The content of carbon black was varied from 100 to 200 pph. The content of chalk was varied from 0 to 100 pph. The content of paraffin oil was also varied in some samples. The compounds were prepared by mixing ingredients on a laboratory two-roll mill. Vulcanizates were prepared by curing at 180?C. Various methods were used for the physical and mechanical characterizations. The dynamic mechanical properties of the elastomers were measured in the temperature range from -120 to 80?C.

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EFFECTS OF SEVERAL FACTORS ON ANTI–VIBRATION ABILITY OF EPDM RUBBER

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/55/1b/12109 ◽

2018 ◽

Vol 55 (1B) ◽

pp. 202

Author(s):

Phan Quoc Phu

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

Compressive Stress ◽

Shore Hardness ◽

Epdm Rubber ◽

Ethylene Propylene ◽

Synthetic Rubber

In this research, ethylene–propylene–diene (EPDM) rubber, a type of synthetic rubber with excellent anti–vibration and anti–noise properties, was studied for the application in anti–vibration pads. Via changes in the concentration of substances in the mixtures such as carbon black, triethanolamine (TEA) and sulfur, the mechanical properties and the anti–vibration efficiency of the EPDM rubber samples were determined using mechanical tester. As a result, the EPDM rubber samples containing about 45 % of carbon black N330, 1 % of TEA and 1 % of sulfur showed some good results including the shore hardness about 62 A, the compressive stress at peak of 1.04 N/mm2 and the anti–vibration efficiency approximately 72 %.

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Dynamic mechanical properties of conductive carbon black-reinforced closed cell microcellular oil-extended EPDM rubber vulcanizates: Effect of blowing agent, temperature, frequency, and strain

Journal of Applied Polymer Science ◽

10.1002/app.23927 ◽

2006 ◽

Vol 102 (2) ◽

pp. 1600-1608 ◽

Cited By ~ 10

Author(s):

S. P. Mahapatra ◽

D. K. Tripathy

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

Dynamic Mechanical Properties ◽

Epdm Rubber ◽

Dynamic Mechanical ◽

Blowing Agent ◽

Conductive Carbon Black ◽

Closed Cell

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Dynamics of Nanoparticle Chain Aggregates of Carbon Under Tension

MRS Proceedings ◽

10.1557/proc-778-u4.4 ◽

2003 ◽

Vol 778 ◽

Author(s):

Rajdip Bandyopadhyaya ◽

Weizhi Rong ◽

Yong J. Suh ◽

Sheldon K. Friedlander

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

Polymer Film ◽

Elastic Behavior ◽

Small Strains ◽

Transmission Electron ◽

Chain Aggregates ◽

Nanoparticle Chains ◽

Reinforcing Filler

AbstractCarbon black in the form of nanoparticle chains is used as a reinforcing filler in elastomers. However, the dynamics of the filler particles under tension and their role in the improvement of the mechanical properties of rubber are not well understood. We have studied experimentally the dynamics of isolated nanoparticle chain aggregates (NCAs) of carbon made by laser ablation, and also that of carbon black embedded in a polymer film. In situ studies of stretching and contraction of such chains in the transmission electron microscope (TEM) were conducted under different maximum values of strain. Stretching causes initially folded NCA to reorganize into a straight, taut configuration. Further stretching leads to either plastic deformation and breakage (at 37.4% strain) or to a partial elastic behavior of the chain at small strains (e.g. 2.3% strain). For all cases the chains were very flexible under tension. Similar reorientation and stretching was observed for carbon black chains embedded in a polymer film. Such flexible and elastic nature of NCAs point towards a possible mechanism of reinforcement of rubber by carbon black fillers.

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EXPERIMENTAL STUDY ON THE EFFECT OF CARBON BLACK ON MECHANICAL PROPERTIES OF MORTAR SAMPLES

International Journal of Ecosystems and Ecology Science (IJEES) ◽

10.31407/ijees9411 ◽

2019 ◽

Vol 9 (4) ◽

pp. 671-676

Author(s):

Hicran AÇIKEL ◽

Keyword(s):

Mechanical Properties ◽

Experimental Study ◽

Carbon Black

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Enhancement of Chloroprene/Natural/Butadiene Rubber Nanocomposite Properties Using Organoclays and Their Combination with Carbon Black as Fillers

Polymers ◽

10.3390/polym13071085 ◽

2021 ◽

Vol 13 (7) ◽

pp. 1085

Author(s):

Patricia Castaño-Rivera ◽

Isabel Calle-Holguín ◽

Johanna Castaño ◽

Gustavo Cabrera-Barjas ◽

Karen Galvez-Garrido ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

High Performance ◽

Rubber Matrix ◽

Butadiene Rubber ◽

X Ray Diffraction ◽

X Ray ◽

Rubber Blends ◽

Ft Ir ◽

Chloroprene Rubber

Organoclay nanoparticles (Cloisite® C10A, Cloisite® C15) and their combination with carbon black (N330) were studied as fillers in chloroprene/natural/butadiene rubber blends to prepare nanocomposites. The effect of filler type and load on the physical mechanical properties of nanocomposites was determined and correlated with its structure, compatibility and cure properties using Fourier Transformed Infrared (FT-IR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and rheometric analysis. Physical mechanical properties were improved by organoclays at 5–7 phr. Nanocomposites with organoclays exhibited a remarkable increase up to 46% in abrasion resistance. The improvement in properties was attributed to good organoclay dispersion in the rubber matrix and to the compatibility between them and the chloroprene rubber. Carbon black at a 40 phr load was not the optimal concentration to interact with organoclays. The present study confirmed that organoclays can be a reinforcing filler for high performance applications in rubber nanocomposites.

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