Aging properties of styrene-butadiene rubber nanocomposites filled with carbon black and rectorite

Bound rubber in carbon black (CB) filled rubber (natural rubber (NR) and styrene–butadiene rubber (SBS)) was prepared by the solvent method. The nanomorphology of CB and rubber/CB soluble rubber was observed by atomic force microscope. The results show that high-structure CB DZ13 has a "grape cluster" structure which consists of many original particles with the grain size of about 30–50 nm. Graphitizing process of CB decreases the amount of bound rubber. The NR/DZ13 soluble rubber with island–rim structure has been obtained, where the islands are DZ13 particles and the rims around the islands are occupied by NR film. But when the graphitized DZ13 particles were used as fillers of rubber, we have only observed that some graphitized DZ13 particles were deposited on the surface of the globular-like NR molecular chains, instead of the spreading of NR molecular chains along the surface of DZ13 particles, indicating that graphitized DZ13 has lower chemical activity than ungraphitized DZ13. Especially, we have already observed an interesting unusual bound rubber phenomenon, the blocked "bracelet" structure with the diameter of about 600 nm in which CB particles were blocked in ring-shaped SBS monomer.

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Styrene Butadiene Rubber/Epoxidized Natural Rubber (SBR/ENR50) Nanocomposites Containing Nanoclay and Carbon Black as Fillers for Application in Tire-Tread Compounds

Journal of Macromolecular Science Part B ◽

10.1080/00222348.2016.1230464 ◽

2016 ◽

Vol 55 (10) ◽

pp. 969-983 ◽

Cited By ~ 4

Author(s):

Sima Ahmadi Shooli ◽

Mitra Tavakoli

Keyword(s):

Carbon Black ◽

Natural Rubber ◽

Epoxidized Natural Rubber ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Styrene Butadiene

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Difference in bound rubber formation of silica and carbon black with styrene-butadiene rubber

Polymers for Advanced Technologies ◽

10.1002/pat.211 ◽

2002 ◽

Vol 13 (6) ◽

pp. 466-474 ◽

Cited By ~ 47

Author(s):

Sung-Seen Choi

Keyword(s):

Carbon Black ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Bound Rubber ◽

Styrene Butadiene

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Fatigue-induced dual stiffness behavior of filled styrene–butadiene rubber

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1177/1464420718809502 ◽

2018 ◽

Vol 233 (10) ◽

pp. 2006-2014 ◽

Cited By ~ 1

Author(s):

Ruofan Liu ◽

Erol Sancaktar

Keyword(s):

Carbon Black ◽

Tensile Creep ◽

Styrene Butadiene Rubber ◽

Bond Rupture ◽

Butadiene Rubber ◽

Fatigue Process ◽

Strain Behavior ◽

Rupture Model ◽

Styrene Butadiene ◽

Softening Stage

Payne and Mullins effects are widely observed in reinforced rubber materials. The mechanisms by which these two effects work are not fully understood. Several models have been proposed, including molecular slippage model, bond rupture model, and filler rupture model. In this study, two different compounds of styrene–butadiene rubber were prepared using carbon black and silica as reinforcement fillers, respectively, and subjected to cyclic fatigue process. Tensile, creep, and relaxation tests were performed on fatigued samples to assess the residual stress–strain behavior by comparing with the results from similar tests using pristine (no fatigue) samples. When the tensile stiffness behavior of fatigued specimens was evaluated, we noted that the stiffness versus strain behavior which exhibited a monotonic decreasing–increasing behavior with the pristine specimens changed to what we call “dual-stiffness” condition, where the specimens went through a first (low) turning point as with the pristine samples, but then dropped off of a peak to go through a second softening stage, similar to the first softening stage of the pristine material. We believe that such spiking (dual) stiffness behavior characterized by a “Peak” point represents a combination of both Payne and the Mullins effects active during fatigue loading. We conclude that molecular slippage and bond rupture are the main factors affecting the physical properties of carbon black-filled compounds, while breakage and recombination of the filler are the key mechanisms affecting the silica-filled compounds during the fatigue process.

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