Thermal Conductivity Carbon Fiber Laminate

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.

Thermal conductivity carbon fiber laminate.

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. On the one hand these carbonaceous fillers possess high thermal conductivity which act as functional component to enhance the thermal conductivity of composite laminate. 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. 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.

T700 and m55j are the most common carbon fiber types. 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. For the multidirectional sample the thermal conductivity ranges from 0 22 w mk at 5 7 k to 2 98 w mk. Furthermore cfrp composites containing 20 wt graphene nanoplatelets gnps were found to exhibit an excellent thermal conductivity of 13 7 w m k.

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. At room temperature the thermal conductivity in the 0 direction is 7 times that in the 90 direction.