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Suppression of negative temperature coefficient of resistance of multiwalled nanotube/silicone rubber composite through segregated conductive network and its application to laser-printing fusing element
Affiliation:1. Materials Research Center, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, 446-712, South Korea;2. Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Donjak-gu, Seoul, 156-743, South Korea;3. Molds & Dies Technology Group, Korea Institute of Industrial Technology, 7-47 Songdo-dong, Yeonsoo-gu, Incheon, 21999, South Korea;1. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry; National Engineering Laboratory for Biomass Chemical Utilization; Key and Open Laboratory on Forest Chemical Engineering, State Forestry Administration; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu 210042, China;2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;3. Institute of New Technology of Forestry, Chinese Academy of Forestry, Beijing 100091, China;1. Department of Polymer Science and Engineering, School of Chemistry and Biological Engineering, University of Science & Technology Beijing, Beijing 100083, People''s Republic of China;2. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People''s Republic of China;3. Department of Elements, Beijing Institute of Fashion Technology, Beijing 100029, People''s Republic of China;1. Institute of Materials Research and Engineering, a-star, 2 Fusionopolis Way, 138634, Singapore;2. Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore;3. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;1. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China;2. Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
Abstract:Negative temperature coefficient of resistance of a material can be a disadvantage in high temperature applications, causing a system to be thermally unstable as the temperature increases. We investigate the concept of excluded volume to suppress the negative temperature coefficient of resistance of a multi-walled carbon nanotube/silicone rubber composite. When micro- or nano-silica particles are incorporated to realize the segregated conductive network, the resistance-temperature dependence of the composite is suppressed in both the conductive polymer composite itself and a fuser unit for printers having the carbon nanotube composite as heating layer. It is believed that the effect of mechanical reinforcement and suppression in thermal expansion by the secondary particles are essential for suppressing the temperature dependence of resistance. This investigation on the excluded volume can be interpreted to offer a new perspective on nanomaterial-based thermistor technology.
Keywords:Multiwalled carbon nanotube  Temperature coefficient of resistance  Excluded volume  Segregate network  Heater  Printer fuser
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