Fabrication and Excellent Dielectric Performance of Exfoliated Graphite Sheets
| Authors | Girish M. Joshi1, Kalim Deshmukh1, P.K. Jain2 |
| Affiliations | 1 Polymer Nanocomposite Laboratory, Material Physics Division, School of Advanced Sciences, VIT University, Vellore-632014, TN, India 2 Center for Carbon Materials, International Advanced Research Center for Powder Metallurgy and New Materials, Autonomous Center of Department of Science and Technology, P. O. Balapur, Hydrabad-500 005, India. |
| Е-mail | varadgm@gmail.com |
| Issue | Volume 8, Year 2016, Number 1 |
| Dates | Received 04 December 2015; published online 15 March 2016 |
| Citation | Girish M. Joshi, Kalim Deshmukh, P.K. Jain, J. Nano- Electron. Phys. 8 No 1, 01022 (2016) |
| DOI | 10.21272/jnep.8(1).01022 |
| PACS Number(s) | 81.05.ue, 72.80.Vp |
| Keywords | Carbon materials (2) , Dielectrics (2) , Electrical properties (19) , Electron microscopy (20) . |
| Annotation | In the present investigation, exfoliated graphite sheets were obtained from the thermo-chemical treatment of natural graphite flakes. In this process, the graphite expands almost 300-350 times of its original volume and takes the shape of worms. These worms can be pressed or rolled into any desired shape without any binder. The exfoliated graphite sheets show excellent electrical properties i.e. high dielectric constant (ε 6.374 107) and comparatively low dielectric loss (tanδ 138) across the frequency in the range 50 Hz to 30 MHz and temperature in the range 40-300 C. The products developed from exfoliated graphite can have very good sealing applications in industrial areas, especially for gaskets in the automobile industries. |
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