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Author(s): |
Wen Zhao, Lab of Printing&Packaging Material and Technology, Beijing Institute of Graphic Communication, Beijing, 102600, China
Lu-hai Li, Lab of Printing&Packaging Material and Technology, Beijing Institute of Graphic Communication, Beijing, 102600, China
Zhi-qing Xin, Lab of Printing&Packaging Material and Technology, Beijing Institute of Graphic Communication, Beijing, 102600, China
Xiao-jun Tang, Lab of Printing&Packaging Material and Technology, Beijing Institute of Graphic Communication, Beijing, 102600, China
Peng Du, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China |
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Abstract: |
Pressure-sensitive conductive composite materials have good pressure sensitivity and conductivity. There are so many potential applications in intelligent packaging. In this article, we discussed the difference and relation between pressure-sensitive conductive materials and typical conductive materials; what is more, the definition and the principle of piezoresistive effect are also included. The piezoresistive effect has been divided into two parts by resistance and pressure: positive piezoresistive effect and negative piezoresistive effect, respectively. The application of the two effects is also discussed. In our laboratory, we have prepared pressure-sensitive conductive microcapsules, in which Ag particles are as the core, the size of as prepared microcapsules is around 100μm, with the pressure effect, the microcapsules show excellent pressure sensitivity and conductivity.
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