Thermal conductive graphite sheet, also known as graphite heat sink, is a kind of thermal conductive material with unique grain orientation and uniform thermal conductivity in two directions. The layered structure can well adapt to the surface of mobile phones and has the performance of shielding heat sources.
Extended data:
Principle of graphite heat dissipation:
A typical thermal management system consists of an external cooling device, a radiator and a thermal part. The important function of radiator is to generate the maximum effective surface area, on which heat is transferred and taken away by external cooling medium. The graphite heat sink can effectively transfer heat by evenly distributing heat in a two-dimensional plane, thus ensuring the module to work at this temperature.
The chemical composition of thermal conductive graphite material is mainly a single carbon (C) element, which is a natural element mineral. Thin-film polymer compounds can obtain graphitized thin films by chemical methods at high temperature and high pressure, because carbon is a nonmetallic element, but it has the electrical conductivity and thermal conductivity of metallic materials, plasticity like organic plastics, and special thermal properties and chemical stability.
Baidu encyclopedia-graphite heat dissipation