What is the difference between thermal graphite sheet and graphene film?
[ Date: 2020-08-27 09:12:52 Author: Popularity: ]
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Graphite heat-dissipating film is a heat-conducting medium material made of graphite composed of carbon molecules by high-temperature expansion and chemical calendering, which has independent grain orientation and dissipates heat simultaneously in both horizontal and vertical directions. The bare graphite sheet with the thinnest thickness of 0.01mm has a horizontal thermal conductivity of 1900w/m-k, which is mainly used for thermal conduction or cooling of electronic products.


Graphene film is a single-layer carbon molecule sheet structure composed of carbon molecules. The thinnest thickness can be as large as 0.34nm. Graphene has hardness comparable to diamond, and the current density resistance can reach 200 million A/cm2. Its thermal conductivity is also 2~4 times that of thermal graphite sheet. It can be applied to lithium electronic battery, semiconductor industry, photovoltaic industry, aerospace lighting industry, network communication equipment and new generation display screen materials. However, the manufacturing process is complicated, and it is difficult to mass produce and the manufacturing cost is high. 


Now Dasen can offer the thermal graphite sheet with the thickness of 12um, 17um, 25um, 32um, 40um, 50um, 70um, 100um and 150um.

Thermal conductivity in x-y axis: 500~1900W/mK.