Estimation of Microwave Absorption Properties of RGO-SiC-LLDPE Composites
| Autor: | Utpaljyoti Mahanta, Pankaj Bora, Jayanta K. Sarmah, Jyoti Prasad Gogoi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science General Engineering 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Microwave absorber Dielectric response Linear low-density polyethylene chemistry.chemical_compound chemistry 0103 physical sciences Silicon carbide Composite material 0210 nano-technology Absorption (electromagnetic radiation) Microwave |
| Zdroj: | Advanced Materials Research. 1165:87-97 |
| ISSN: | 1662-8985 |
| Popis: | The present work investigate the microwave absorption properties of reduced graphene oxide (RGO)-Silicon carbide (SiC)-Linear low-density polyethylene (LLDPE) composites prepared in different concentration of fillers(10, 20, 30, 40 wt. %) with LLDPE matrix. Synthesis of RGO is confirmed from XRD analysis and SiC is used as received from supplier. Complex permittivity of the composites is measured using Nicolson Ross method showing an increasing trend with increasing filler concentrations with maximum and for 40 wt. % composite sample. Based on transmission line theory and using measured value of complex permittivity, conductor backed single and double layer absorber is designed by thickness optimization. The calculated reflection loss (RLc) value of ~-71 dB at 11.23 GHz is observed for 40 wt. % composite sample of 7 mm thickness with -10 dB absorption bandwidth of 1.48 GHz and -20 dB bandwidth of 0.64 GHz. |
| Databáze: | OpenAIRE |
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