Interfacial friction damping characteristics in MWNT-filled polycarbonate composites

Abstract

The effects of strain, temperature, test frequency, and multi-walled nanotube (MWNT) weight percentage on the interfacial sliding at the tube-polymer interfaces were investigated by dynamic mechanical tests. The storage modulus first increased slightly then reached a plateau and finally decreased sharply with further increasing strain (temperature, frequency) amplitude. Moreover, the changing of the storage modulus of the nanocomposite lagged the loss modulus as a function of strain (temperature, frequency). Furthermore, with the increase of MWNT weight percentage interfacial slip was activated at relative smaller strain, lower temperature, or lower frequency. The possible influence of polymer wrapping carbon nanotubes in the interfacial area on interfacial friction was introduced.

Keywords

carbon nanotube / polycarbonate / damping / interfacial friction

References

[1] Hölscher H, Schwarz U D, Zwörner O, . Consequences of the stick-slip movement for the scanning force microscopy imaging of graphite. Physical Review B, 1998, 57: 2477-2481

[2] Koratkar N, Suhr J, Joshi A, . Charactering energy dissipation in single-walled carbon nanotubes polycarbonate composites. Applied Physics Letters, 2005, 87(6): 063102 (3 pages)

[3] Zhou X, Shin E, Wang K W, . Interfacial damping characteristics of carbon nanotube-based composites. Composites Science and Technology, 2004, 64: 2425

[4] Buldum A, Lu J P. Atomic scale sliding and rolling of carbon nanotubes. Physical Review Letters, 1999, 83: 5050-5053

[5] Wagner H D, Lourie O, Feldman Y, . Stress-induced fragmentation of multiwall carbon nanotubes in a polymer matrix. Applied Physics Letters, 1998, 72(2): 188-190

[6] Rajoria H, Jalili N. Passive vibration damping enhancement using carbon nanotube-epoxy reinforced composites. Composites Science and Technology, 2005, 65(14): 2079-2093

[7] Suhr J, Zhang W, Ajayan P M, . Temperature-activated interfacial friction damping in carbon nanotube polymer composites. Nano Letters, 2006, 6(2): 219-223

[8] Suhr J, Koratkar N, Keblinski P, . Viscoelasiticity in carbon nanotube composites. Nature Materials, 2005, 4: 134-137

[9] Wagner H D, Vaia R A. Nanocomposites: issues at the interface. Materials Today, 2004, 7(11): 38-42

[10] Treacy M M, Ebbesen T W, Gibson J M. Exceptionally high Young’s modulus observed for individual carbon nanotubes. Nature, 1996, 381(6854): 678-680

[11] Singh S, Pei Y, Miller R, . Long-range, entangled carbon nanotube networks in polycarbonate. Advanced Functional Materials, 2003, 13: 868-872

[12] Ajayan P M, Schadler L S, Giannaris C, . Single-walled carbon nanotube-polymer composites: strength and weakness. Advanced Materials, 2000, 12(10): 750-754

[13] Qian D, Dickey C, Andrews R, . Load transfer and deformation mechanisms in carbon nanotube-polystyrene composite. Applied Physics Letters, 2000, 76(20): 2868-2870

[14] Sandler J, Shaffer M S P, Prasse T, . Development of a dispersion process for carbon nanotube in an epoxy matrix and the resulting electrical properties. Polymer, 1999, 40(21): 5967-5971

[15] Schadler L S, Giannaris S C, Ajayan P M. Load transfer in carbon nanotube epoxy composites. Applied Physics Letters, 1998, 73(26): 3842-3844

[16] Thostenson E T, Ren Z F, Chou T W. Advances in the science and technology of carbon nanotubes and their composites: a review. Composites Science and Technology, 2001, 61(13): 1899-1912

[17] Zhang W, Suhr J, Koratkar N A. Observation of high buckling stability in carbon nanotube polymer composites. Advanced Materials, 2006, 18: 452-456

[18] Eitan A, Fisher F T, Andrews R, . Reinforcement mechanisms in MWNT-filled polycarbonate. Composites Science and Technology, 2006, 66(9): 1162-1173

Acknowledgements

The authors are grateful for the financial support from the National Natural Science Foundation of China (Grant Nos. 10675070 and 50701026), and the National Basic Research Program of China (973 Program, 2007CB936601).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg