Screen-printed flexible temperature sensor based on FG/CNT/PDMS composite with constant TCR
| Autor: | Jun Qian, Gaofeng Wang, Yihua Zhou, Shuangli Ye, Linhui Wu, Ke Wang, Jinhua Peng, Zhangming Liu, Taolin Ma |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Fabrication Polydimethylsiloxane Composite number Carbon nanotube Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Field emission microscopy chemistry.chemical_compound chemistry law Screen printing Thermal stability Electrical and Electronic Engineering Composite material Temperature coefficient |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:9593-9601 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-019-01293-1 |
| Popis: | This work present the fabrication and characterization of a flexible temperature sensor based on the flake graphite (FG)/carbon nanotube (CNT)/polydimethylsiloxane (PDMS) composite. The sensor shows high temperature sensitivity and good linearity. The FG/CNT/PDMS temperature-sensitive films are prepared by the screen printing process. Superior printability of the FG/CNT/PDMS inks is demonstrated by means of rheology. Field emission scanning electron microscope investigation reveals an interpenetrating network structures between the FG and CNT. Moreover, thermal gravity analysis illustrates that the FG/CNT/PDMS temperature-sensitive films have a better thermal stability than that of PDMS blank control film. The temperature-dependent resistance behavior suggests that the temperature coefficient of resistance (TCR) value of the FG/CNT/PDMS films can be manipulated by the mass ratio of FG to CNT. When the mass ratio of FG to CNT is 4:1, the TCR is almost reproducible and maintained at the same level of 0.028 K−1 for repeated thermal cycles. These results indicate that the developed FG/CNT/PDMS composite has potential applications for the flexible temperature sensor. |
| Databáze: | OpenAIRE |
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