Effect of carbon fiber content on thermal and electrical conductivity, EMI shielding efficiency, and radiation energy of CMC/PVA composite papers with carbon fibers
| Autor: | Jong-Hyun Park, Ji-Young Hwang, Hye-Jong Lee, Min-Koo Lee, Min-Kang Seo, Woong-Ki Choi, Bo-Kyung Choi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Composite number Metals and Alloys Radiant energy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Polyvinyl alcohol 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Mechanics of Materials Electrical resistivity and conductivity Ultimate tensile strength Materials Chemistry Emissivity Composite material 0210 nano-technology Sheet resistance Power density |
| Zdroj: | Synthetic Metals. 273:116708 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2021.116708 |
| Popis: | In this study, the thermal, electrical, and mechanical properties, as well as the electromagnetic interference shielding efficiency (EMI-SE), of carboxymethylcellulose (CMC)/polyvinyl alcohol (PVA)/carbon fiber (CF) composite paper (CP), fabricated by a wet-laid process, were examined based on the CF content. The emissivity and radiation energy of the CP were also measured. Uniformly dispersed fibers in the CF3 sample with a basis weight of 50.32 g/m2 and dimensions of 50 mm × 50 mm exhibited good properties: high tensile strength of 11.5 MPa, low power density of 3133 W/m2, low surface resistance of 2.27 ohm/sq, high surface heat temperature of 111.6 °C at 5 V, high EMI-SE of 61.63 dB (1.5 GHz), and good emissivity and radiation energy of 0.915 and 3.53 × 102 W/m2, respectively, at 37 °C. The most efficient CF3 for electrical heaters with uniform temperature distribution was obtained at the optimal concentrations of 92 wt% CMC, 5 wt% CF, and 3 wt% PVA in the system. |
| Databáze: | OpenAIRE |
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