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Journal of Macromolecular Science, Part B
Physics
Volume 50, 2011 - Issue 8
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Original Articles

Dynamic Fatigue Behavior of Natural Rubber Reinforced with Nanoclay and Carbon Black

Liangliang Qu State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, P. R. China
,
Yijing Nie State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, P. R. China
,
Guangsu Huang State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, P. R. China
,
Gengsheng Weng State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, P. R. China
&
Jinrong Wu State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, P. R. China
Pages 1646-1657 | Received 10 Mar 2010, Accepted 29 Jul 2010, Published online: 22 Jul 2011
 
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Abstract

The dynamic fatigue behaviors of natural rubber (NR) filled with carbon black (CB) and both nanoclay (NC) and CB at same hardness was evaluated using the stepwise increasing strain test (SIST) and long-term testing. Compared with NR/CB composites, NR/CB/NC nanocomposites exhibited higher fatigue-limited strain, stronger dynamic stress relaxation, and longer compression fatigue life. By examining the fracture morphologies, nonlinear viscoelastic behavior, and hysteresis loss of filled NR, it was found that NR, synergisticly reinforced by NC and CB, exhibited improved anti-fatigue ability than NR filled with CB due to stronger filler–filler interactions between NC and CB (a local filler network) and the high aspect ratio and typical lamellar structure of NC.

Acknowledgments

It is a pleasure to acknowledge the financial support by the following grants: National Natural Sciences Foundation of China (No. 50673059) and the National Basic Research Program (973 program) (No. 2007CB714701).

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