Evaluation of Isobutylene-Based Elastomers in a Model Winter Tire Tread

2003 ◽  
Vol 76 (2) ◽  
pp. 348-364 ◽  
Author(s):  
Walter H. Waddell ◽  
Julie H. Kuhr ◽  
Robert R. Poulter
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Dynamic Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Model Compounds ◽  
Styrene Butadiene

Abstract The performance of butyl, chlorobutyl, bromobutyl, and brominated isobutylene-co-para-methylstyrene (BIMS) rubbers were evaluated versus a solution-polymerized styrene-butadiene rubber with 20% bound styrene in model winter tire tread formulations containing natural rubber and butadiene rubber. Isobutylene-based elastomer performance was compared in carbon black-filled and silane-coupled silica-filled systems. Based on laboratory dynamic properties predictive of wet and winter traction, and on DIN abrasion index values, BIMS is the elastomer of choice affording increased tangent delta values between 0 °C and −40 °C, and the highest DIN abrasion index values of the isobutylene-based elastomers. Evaluation of BIMS / NR / BR blends in model compounds show its utility as a tread polymer for improving winter performance.

COMPARISON OF STRESS–SOFTENINGS IN CARBON-BLACK FILLED NATURAL RUBBER AND STYRENE–BUTADIENE RUBBER

2013 ◽  
Vol 86 (4) ◽  
pp. 572-578 ◽  
Author(s):  
Julie Diani ◽  
Yannick Merckel ◽  
Mathias Brieu ◽  
Julien Caillard
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Cyclic Softening ◽  
Styrene Butadiene Rubber ◽  
Amplitude Dependence ◽  
Butadiene Rubber ◽  
Fatigue Lifetime ◽  
Filled Rubber ◽  
Filled Rubbers ◽  
Styrene Butadiene

ABSTRACT The authors compared the mechanical behavior and, more precisely, the Mullins and the cyclic (post-Mullins) softenings of two filled rubbers. A crystallizing natural rubber and a noncrystallizing styrene–butadiene rubber of similar compositions resulting in similar cross-link densities and filled with 40 phr of N347 carbon-black fillers were tested in cyclic uniaxial tension at room temperature and at 85 °C. Crystallization in filled rubbers is known to increase stress at high stretch, stretch at break, cycle hysteresis, and fatigue lifetime and to reduce crack propagation. In this study, it is shown that crystallization also seems to enhance the Mullins softening (softening at the first cycle) and to favor the apparent cyclic softening. Results reveal that natural rubber shows an amplitude dependence on the cyclic softening, whereas the styrene–butadiene rubber does not. Finally, results demonstrate that studying filled rubber softening cannot help predict lifetime.

Studies on Mechanical Properties and Dynamic Performance of SSBR/CB/Silica Composites

2016 ◽  
Vol 717 ◽  
pp. 52-56 ◽  
Author(s):  
Wei Liu ◽  
Lin Li ◽  
Bing Kai Han ◽  
Cheng Zhong Zong
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Dynamic Properties ◽  
Dynamic Performance ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Hybrid Fillers ◽  
Two Component ◽  
Series Of Experiments ◽  
Styrene Butadiene

Carbon black ( CB ) and silica were used as two-component fillers to enhance the practicability of rubber. In this study, the microstructure, mechanical and dynamic properties of solution-polymerized styrene-butadiene rubber ( SSBR ) vulcanizates filled with carbon black and silica were characterized. 50 phr of total hybrid fillers was used as the base. A series of experiments with different ratios of CB/silica were carried out to determine the best contribution to the performance of SSBR vulcanizates. The studies have shown that when the vulcanizates exhibited the better overall mechanical and dynamic performance with 20 phr silica loading and 30 phr CB loading.

The Application of a New Composite Elastomer Material in Rubber Tracks

2014 ◽  
Vol 881-883 ◽  
pp. 837-840 ◽  
Author(s):  
Lei Zhang ◽  
Yong Chen ◽  
Hong Ji
Keyword(s):  
Wear Resistance ◽  
Carbon Black ◽  
Natural Rubber ◽  
Styrene Butadiene Rubber ◽  
High Wear Resistance ◽  
Manufacturing Cost ◽  
Butadiene Rubber ◽  
Aging Resistance ◽  
Styrene Butadiene

A new composite elastomer material has been tested, in which natural rubber (NR) and styrene-butadiene rubber (SBR) are used as major components, and the high wear resistance carbon black and activity kaolin are introduced as ingredients. This material has been found to be able to enhance the property of grounding part glue and pattern side grounding glue in elastomeric parts. Test show that adding N330 carbon black into NR/SBR systems can significantly improve the strength and wear resistance of the composites. The use of activity kaolin not only improves the blend strength, but also reduce the manufacturing cost. The semi efficient curing system can be adopted by NR/SBR blends to increase the rubber materials property of anti-fatigue and aging resistance.

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