Thermal Conductivity and Raman Spectra of Carbon Fibers

Thermal Conductivity and Raman Spectra of Carbon Fibers Due to its unique physical properties, carbon fiber (CF) has been widely studied for extensive application in aerospace and machinery. In this study, the thermal diffusivity of three kinds of CF sample is characterized by the transient electrothermal technique at room temperature. By subtracting the effect of radiative losses, the effective thermal diffusivity of CFs can be calculated as $$6.46\times 10^{-6}\,\hbox {m}^{2}\cdot \hbox {s}^{-1}$$ 6.46 × 10 - 6 m 2 · s - 1 , $$6.58\times 10^{-6}\,\hbox {m}^{2}\cdot \hbox {s}^{-1}$$ 6.58 × 10 - 6 m 2 · s - 1 and $$2.01\times 10^{-4}\,\hbox {m}^{2}\cdot \hbox {s}^{-1}$$ 2.01 × 10 - 4 m 2 · s - 1 , respectively. For the first time, the emissivity coefficient of carbon fiber is calibrated as 0.78. Combined with Raman spectra and phonon scattering, we found that the better crystalline structure and low defect in CF have an obvious impact on its thermal diffusivity. International Journal of Thermophysics Springer Journals

Thermal Conductivity and Raman Spectra of Carbon Fibers

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Springer US
Copyright © 2017 by Springer Science+Business Media, LLC
Physics; Condensed Matter Physics; Classical Mechanics; Industrial Chemistry/Chemical Engineering; Physical Chemistry
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