Elastomers filled with exfoliated graphite as compliant electrodes
作者： M. Kujawski , J.D. Pearse , E. Smela
DOI: 10.1016/J.CARBON.2010.02.040
关键词: Percolation threshold 、 Polydimethylsiloxane 、 Scanning electron microscope 、 Electrode 、 Graphite 、 Modulus 、 Materials science 、 Elastomer 、 Composite material 、 Carbon nanotube
摘要: Abstract A compliant electrode material has been realized by blending an insulating polydimethylsiloxane (PDMS) elastomer with a conductive exfoliated graphite filler, which was produced microwave irradiation. The conductivity and stiffness of the electrodes were determined as function filler concentration. These materials exhibited low percolation threshold: above 3 wt.% loading they became conductive, conductivities reaching high 0.4 S/cm. They remained elastomeric upon up to 25 wt.%, having Young’s modulus only 1.4 MPa. This (corresponding 220% increase compared unloaded PDMS) is lowest reported for loaded elastomers threshold. Scanning electron microscopy showed that composites contained small voids, unlike PDMS, might be responsible modulus. performance these comparable PDMS carbon nanotubes, but can at fraction cost.
elsevier.com
sci-hub.se 参考文章(42)
J.C. Halpin, Stiffness and Expansion Estimates for Oriented Short Fiber Composites Journal of Composite Materials. ,vol. 3, pp. 732- 734 ,(1969) , 10.1177/002199836900300419
J. Engel, J. Chen, Nannan Chen, S. Pandya, Chang Liu, Multi-Walled Carbon Nanotube Filled Conductive Elastomers: Materials and Application to Micro Transducers international conference on micro electro mechanical systems. pp. 246- 249 ,(2006) , 10.1109/MEMSYS.2006.1627782
J.K.W. Sandler, J.E. Kirk, I.A. Kinloch, M.S.P. Shaffer, A.H. Windle, Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites Polymer. ,vol. 44, pp. 5893- 5899 ,(2003) , 10.1016/S0032-3861(03)00539-1
F. Lux, Models proposed to explain the electrical conductivity of mixtures made of conductive and insulating materials Journal of Materials Science. ,vol. 28, pp. 285- 301 ,(1993) , 10.1007/BF00357799
L. Flandin, A. Chang, S. Nazarenko, A. Hiltner, E. Baer, Effect of strain on the properties of an ethylene–octene elastomer with conductive carbon fillers Journal of Applied Polymer Science. ,vol. 76, pp. 894- 905 ,(2000) , 10.1002/(SICI)1097-4628(20000509)76:6<894::AID-APP16>3.0.CO;2-K
Tong Wei, Zhuangjun Fan, Guilian Luo, Chao Zheng, Dashou Xie, A rapid and efficient method to prepare exfoliated graphite by microwave irradiation Carbon. ,vol. 47, pp. 337- 339 ,(2009) , 10.1016/J.CARBON.2008.10.013
A. Celzard, E. McRae, C. Deleuze, M. Dufort, G. Furdin, J. F. Marêché, Critical concentration in percolating systems containing a high-aspect-ratio filler Physical Review B. ,vol. 53, pp. 6209- 6214 ,(1996) , 10.1103/PHYSREVB.53.6209
Jerome Joimel, Jonathan N. Coleman, Sukanta De, Philip E. Lyons, Sophie Sorel, Evelyn M. Doherty, Paul J. King, Werner J. Blau, Peter N. Nirmalraj, John J. Boland, Vittorio Scardaci, Transparent, Flexible, and Highly Conductive Thin Films Based on Polymer−Nanotube Composites ACS Nano. ,vol. 3, pp. 714- 720 ,(2009) , 10.1021/NN800858W
A. Celzard, E. McRae, J.F. Marêché, G. Furdin, M. Dufort, C. Deleuze, Composites based on micron-sized exfoliated graphite particles: Electrical conduction, critical exponents and anisotropy Journal of Physics and Chemistry of Solids. ,vol. 57, pp. 715- 718 ,(1996) , 10.1016/0022-3697(95)00337-1
Eduardo H.L. Falcao, Richard G. Blair, Julia J. Mack, Lisa M. Viculis, Chai-Won Kwon, Michael Bendikov, Richard B. Kaner, Bruce S. Dunn, Fred Wudl, Microwave exfoliation of a graphite intercalation compound Carbon. ,vol. 45, pp. 1367- 1369 ,(2007) , 10.1016/J.CARBON.2007.01.018