▎ 摘　　要

NOVELTY - Preparing high-flux and dense graphene thermal conductive film comprises (i) granulating the graphene oxide, adding into a certain quality of dispersant, dispersing at high speed and subjecting to high-pressure homogenization to obtain a coating slurry with a certain viscosity; (ii) injecting the obtained coating slurry into an injection-molded model of a specific substrate material with adjustable shape and thickness to obtain a base film; (iii) placing the obtained base film in a microwave vacuum machine for a microwave treatment to obtain a dry film; (iv) performing a roll pressing process on the obtained primary dry film, and subjecting it to a secondary microwave treatment to obtain a cured and foamed secondary dry film; and (v) carrying out carbonization treatment, graphitizing the obtained secondary dry film continuously and performing a second rolling treatment. USE - The method is useful for preparing high-flux and dense graphene thermal conductive film. ADVANTAGE - The method: can adopt a microwave curing and foaming duplex process, utilize the high efficacy of microwave curing of thermosetting compounds and the strong absorption of microwaves by active low-molecular substances, vaporize the low-molecular-weight substance; has high preparation efficacy; produces film with high quality, uniform thickness, size and shape, larger heat flux, more regular and dense internal arrangement and higher density and excellent thermal conductivity; and does not require specific parameters e.g. viscosity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for high-flux and dense graphene thermal conductive film, prepared as mentioned above.