Thermal Conductivity Carbon Fiber Laminate

Furthermore cfrp composites containing 20 wt graphene nanoplatelets gnps were found to exhibit an excellent thermal conductivity of 13 7 w m k.

Thermal conductivity carbon fiber laminate.

Emissivity and thermal conductivity of carbon fiber epoxy laminates were characterized beforehand. The in plane thermal conductivity of cfrp is expected to attain to 120 w m k thermal conductivity of 2024 t3 aluminum alloys is about 120 w m k in the satellite structure. Assuming that all laminae are identical in thickness and in fiber content effective thermal conductivity in each global direction is determined for the laminated composite. The thermal conductivity of a sample with laminate plys in the configuration 45 90 0 3 90 45 has also been measured.

Infrared image analysis was used to determine the emissivity of the composite. A bi experiment inverse method combining fe modeling and steady state temperature measurements on a heated test piece was used to characterize the thermal conductivity. However the thermal conductivities of these cfrp materials are generally poor due to low axial thermal conductivity of pan based carbon fiber which greatly limits their application in the satellite structure panels. Starting with thermal conductivity components for the individual continuous unidirectional fiber reinforced lamina or ply a method has been developed to determine global conductivities in a laminated carbon carbon composite.

On the other hand these fillers may bridge continuous carbon fiber reinforcements to transfer heat more effectively or directly form continuous through thickness conductive network. At room temperature the thermal conductivity in the 0 direction is 7 times that in the 90 direction. Incorporating multi walled carbon nanotubes into cfrp composites is more advantageous for improving electrical conductivity whereas incorporating gnps is more beneficial for enhancing thermal conductivity.