From the perspective of thermal conductivity, gold foil, copper foil, aluminum foil, and silicon thermal conductive sheet are all isotropic materials, that is, thermal conductivity (thermal conductivity) is the same in all directions. Graphite thermal conductive sheet is an anisotropic material, and the thermal conductivity in the horizontal direction (inside the thermal conductive sheet) is much greater than that in the direction of the vertical thermal conductive sheet, which is a good heat soaking material.
The thermal conductivity of various materials is as follows
Gold 317 W/m-K
Copper 401 W/m-K
Aluminum 237 W/m-K
Silver 429 W/m-K
Graphite thermal conductive sheet horizontal 150-1500 W/m-K, vertical direction 15~25 W/m-K (specific parameters consult suppliers or design experiment inspection)
Silicon thermal conductive sheet 0.8~4.5W/m-K
In addition, the thermal resistance of the material is also related to the thickness of the material, and different thermal conductive materials should be selected according to different use requirements.
