Anisotropic Thermal Diffusivity Measurements in High-Thermal-Conductive Carbon-Fiber-Reinforced Plastic CompositesReport as inadecuate




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Thispaper presents the temperature dependence of in-plane thermal diffusivity andanisotropy distribution for pitch-based carbon-fiber-reinforced polymersCFRPs. The measurement was performed using the laser-spot periodic heatingmethod. The samples were unidirectional UD and crossply CP CFRPs. Allcarbon fibers of the UD samples ran in one direction, while those of the CPsamples ran in two directions. In both UD and CP CFRPs, from -80°C to +80°C, temperaturedependence of thermal diffusivity values increased as temperature decreased. Inthis temperature range, the anisotropic ratio between the fiber direction andits perpendicular direction of the UD CFRP was 106 - 124. During the anisotropydistribution measurement, it was found that thermal anisotropy can bevisualized by scanning the laser in a circle on the sample. The thermaldiffusivity of the UD CFRP in the fiber direction was 17 times larger than thatin the 15° direction, and the thermal diffusivity in the other directions waslower than that in the 15° direction. The anisotropy distribution for the CPCFRP reflected its inhomogeneous structure.

KEYWORDS

AC Calorimetric Method, Anisotropy, Carbon-Fiber-Reinforced Polymers, High Thermal Conductivity, Thermal Diffusivity

Cite this paper

Kuribara, M. and Nagano, H. 2015 Anisotropic Thermal Diffusivity Measurements in High-Thermal-Conductive Carbon-Fiber-Reinforced Plastic Composites. Journal of Electronics Cooling and Thermal Control, 5, 15-25. doi: 10.4236-jectc.2015.51002.





Author: Masaya Kuribara, Hosei Nagano*

Source: http://www.scirp.org/



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