Contact resistance of multi-walled carbon nanotube/natural rubber nanocomposites with metallic ball |
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| Institution: | 1. Institute of Carbon Science and Technology, Shinshu University, Nagano 380-8553, Japan;2. Nissin Kogyo Co. Ltd., 801 Kazawa, Tomi-shi, Nagano 386-8505, Japan;1. Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, Henan 454000, China;2. Department of Chemistry, Capital Normal University, Beijing 100048, China;3. State Key Laboratory of Structural Chemistry, Fuzhou, Fujian 350002, China;4. National Engineering Technology Research Center For Colloidal Materials, Shandong University, Jinan 250100, China;1. Department of Physics, Yancheng Institute of Technology, Jiangsu 224051, China;2. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China |
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| Abstract: | This paper reports on the contact resistance (Rc) between carbon filler/natural rubber (NR) nanocomposite and gold ball: three varieties of nanocomposites were prepared from carbon black (CB) and two kinds of multi-walled carbon nanotubes (MWCNTs) with different diameter. Rc of MWCNT/NR nanocomposite was remarkably less than that of CB/NR nanocomposites. The relationship between Rc of MWCNT/NR nanocomposites and applied load was expressed in the formula, Rc=C·P−n (P: load, C and n: constant): for the MWCNTs (diameters of 13 nm)/NR and MWCNTs (diameters of 67 nm)/ NR nanocomposites, they were expressed as Rc=1724·P−0.6 and Rc=344·P−0.37, respectively. The former (MWCNT, ϕ13 nm) showed higher Rc than the latter (MWCNT, ϕ67 nm) over whole region of applied load. The mechanical hardness of the former was higher (90 HsA) than that of the latter (82 HsA). Therefore, the smaller contact area between the nanocomposite and gold ball of the former resulted in higher Rc. The apparent specific contact resistivity was calculated from the observed values of Rc and contact area: 130 Ω mm2 and 127 Ω mm2 for the former (MWCNT, ϕ13 nm) and the latter (MWCNT, ϕ67 nm), respectively. |
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| Keywords: | Multi-walled carbon nanotubes Natural rubber Contact resistance Hardness Composites |
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