Flexible graphite sheet and method for fabricating the same and composite structure for the same

摘要

The present disclosure provides a flexible graphite sheet and a method for fabricating the same and a composite structure for the same. The method for fabricating a flexible graphite sheet comprises steps of coating an augmenting solution on a first film to form a composite structure, and heating the composite structure such that the first film and the augmenting solution form a flexible graphite sheet, wherein the thermal conducting cross-section of the flexible graphite sheet is larger than the thermal conducting cross-section of the first film, and the thermal conductivity of the flexible graphite sheet ranges from 1200 to 6000 W/m° C.

主权项

1. A method for preparing a flexible graphite sheet, comprising steps of:
coating an augmenting solution on a first film to form a composite structure, wherein the augmenting solution is selected from the group consisting of polyimide solution and graphene, wherein the first film is a polyimide film, a carbonized polyimide film, or a pyrolytic graphite film; and performing a heating process on the composite structure such that the augmenting solution and the first film form a flexible graphite sheet, wherein the thermal conducting cross-section of the flexible graphite sheet is larger than the thermal conducting cross-section of the first film, and the thermal conductivity of the flexible graphite sheet is in a range from 1200 to 6000 W/m° C., wherein the heating process is performed in a stepwise manner, with a first increment rate not larger than 2° C./min from room temperature to 1000° C. and a second increment rate not larger than 10° C./min from 1000° C. to 2800° C.