期刊
ACS NANO
卷 5, 期 5, 页码 3858-3866出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn200201u
关键词
rubber nanocomposites; carbon nanotubes; sealant; mechanical property
类别
资金
- National Natural Science Foundation of China [10672089, 10772100, 10832005]
- China 973 Program [2007CB936803]
- NEDO (New Energy and Industrial Technology Development Organization)
- METI (Ministry of Economy, Trade and Industry)
- Exotic Nanocarbons
- Japan Regional Innovation Strategy Program
- JST (Japan Science and Technology Agency)
- MEXT (Ministry of Education, Culture, Sports, Science and Technology) in Japan
High-performance sealants using rubber composites containing multiwalled carbon nanotubes (MWNTs) were developed in order to probe and excavate oil in deeper wells. However, the stress-strain behavior and the reinforcing mechanism of highly concentrated MWNT/rubber composites subjected to large deformation remain largely unexplored. Here we report on the complete stress-strain relationships of MWNT/rubber composites under uniaxial tension before rupture, with a suggestion of a novel reinforcement effect of high concentration of MWNTs. A theoretical model is developed to understand the, reinforcing mechanism and estimate the mechanical properties of MWNT/rubber composites under large deformation. We have demonstrated that persistence length and reorientation of MWNTs during stretch have a significant impact on mechanical properties, such as the modulus of the rubber composite. These results provide guidelines for developing MWNT-reinforced composites to achieve desired nonlinear and extreme mechanical performance for a wide range of applications.
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