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(Color online) (a) FE-SEM image of pitch-based carbon fibers, (b) FE-SEM image of crystalline carbon nanotubes (inset is a high resolution TEM image), (c) schematic image describing the role of a thermally conductive filler of carbon nanotubes between adjacent carbon fibers, and (d) the preparation procedure: impregnation, hot press molding, and shaping.
FE-SEM images of the fractured carbon fiber/phenol composites containing [(a) and (b)], [(c) and (d)], and [(e) and (f)] of carbon nanotubes, respectively.
Thermal conductivities of carbon fiber/phenolic resin composites containing either highly crystalline MWCNTs or defective MWCNTs as a function of the amount of the added MWCNTs, respectively. Note that the maximum value of the thermal conductivity for the composite with the crystalline MWCNTs is exactly the same as that of copper.
Basic properties of the multiwalled carbon nanotubes used in this study.
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