Heat conductive graphite sheet and preparation method thereof

The invention discloses a heat conductive graphite sheet and a preparation method thereof. The preparation method includes steps of: S1) dispersing a graphite raw material and magnetic particles in water to obtain graphite slurry, wherein the graphite raw material is graphite oxide and/or graphene oxide, and the main component of the solvent is water; S2) spreading the graphite slurry on a substrate and placing the substrate in a magnetic field environment, and heating and drying the substrate to form a coating layer; S3) carbonizing and graphitizing the dried coating layer, thus preparing theheat conductive graphite sheet. In the method, magnetic field is used for regulating oriented arrangement of the material to form the heat conductive graphite sheet, wherein the graphite micro-sheetssupport the magnetic particles and the arrangement direction of the graphite micro-sheets is regulated by the magnetic field, thereby improving heat conductivity of the graphite sheet. 本发明公开了种导热石墨片及其制备方法。所述导热石墨片的制备方法包括如下步骤：S1