▎ 摘　　要

NOVELTY - The method involves (a) winding the graphene oxide film (1), tightening the graphene dioxide film on the graphite column with the length of 100-500 mm and the diameter of 3-10 mm to obtain a columnar body, and using the outer sleeve (2) to sleeve the columnar bodies, extracting the graphitic column to obtain the graphene oxides coiled material, and (b) heating the graphene Oxides coiling material in step (a), performing heat treatment at 300?? C for 10-30 hours, and graphitizing at 2700-3000?? C, for 2-15 hours to obtain graphene oxide foam column. USE - Method for preparing a graphene foam column and graphene radiating material (claimed) used in electronic device. Uses include but are not limited to mobile phone, personal digital assistant (PDA), portable multimedia player (PMP), digital camera, digital camcorder, digital video camera (DVC), digital photo frame, portable game machine, portable electronic book (e-book). ADVANTAGE - The graphene foam column preparation technique is simple, low cost, and there is no need to introduce adhesive, graphene radiating material longitudinal heat-conducting performance is excellent. The graphene foaming block has controllable thickness, which is suitable for different size requirements, the product has strong processability, and has excellent heat conducting performance. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene foam column. 1Graphene oxide film 2Outer sleeve