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Enhanced electrical conductivity and mechanical stability of flexible pressure-sensitive GNPs/CB/SR composites: Synergistic effects of GNPs and CB

Published online by Cambridge University Press:  02 November 2015

Ping Liu*
Affiliation:
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui Province, People's Republic of China
Ying Huang
Affiliation:
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui Province, People's Republic of China; and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, Anhui Province, People's Republic of China
Caixia Liu*
Affiliation:
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui Province, People's Republic of China
Yue Wang
Affiliation:
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui Province, People's Republic of China
Xiaohui Guo
Affiliation:
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui Province, People's Republic of China
Yugang Zhang
Affiliation:
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui Province, People's Republic of China
Yunjian Ge
Affiliation:
Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, Anhui Province, People's Republic of China
*
a)Address all correspondence to this author. e-mail: liuping@hfut.edu.cn
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Abstract

Silicone Rubber (SR) filled with graphene nanoplatelets (GNPs) and carbon black (CB) is prepared for high performance flexible pressure sensor. Due to the synergetic effect of mixed GNPs and CB, the percolation threshold of GNPs/CB/SR is lower than that of CB/SR, which indicates the addition of GNPs is contributed to enhance the electrical conductivity of GNPs/CB/SR. Moreover, the GNPs/CB/SR has a higher electrical stability and weaker resistance creep than that of GNPs/SR. That is to say, the addition of CB can promote the electrical and mechanical performance of GNPs/CB/SR, simultaneously. The pressure sensor array based on GNPs/CB/SR with weight on different sensing element is tested, and the results show that the size of applied loading on the pressure-sensitivity array can be recognized accurately.

Type
Articles
Copyright
Copyright © Materials Research Society 2015 

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References

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