Preparation method of carbon film with self-adhesive property and obtained carbon film

The invention provides a preparation method of a carbon membrane with a self-adhesive property and the obtained carbon membrane, and belongs to the technical field of membrane separation. The preparation method comprises the following steps: mixing semi-coke serving as a carbon-containing substance with a pore-forming agent, a plasticizer and a solvent, fully ball-milling and mulling, drying, grinding and carrying out pressure forming to obtain an original carbon membrane; and treating the obtained original carbon film by a heat treatment carbonization process to obtain the carbon film with self-adhesive property. The preparation method disclosed by the invention is simple to operate, green and environment-friendly, and does not need to add other binders and additional process treatment. In addition, the semi-coke is rich in a large amount of inorganic mineral substances (15-22%), so that the breaking strength of the carbon film is greatly improved. The prepared carbon membrane has the characteristics of smal