▎ 摘　　要

NOVELTY - Preparing thermally conductive graphene film comprises (i) placing the pre-obtained powdered graphene raw materials into the preparation device, and then starting the preparation device, preheating the preparation device, reaching the predetermined temperature, starting the preparation device to obtain graphene film, and (ii) removing the graphene film produced in the step (i) from the second conveyor belt and winding on the product roll, passing the inspection, sending to the warehouse for storing. The preparation device includes a main box. The main box is rotatably installed with roller one and roller two. The first roller is the same size as the second roller. The first roller and the second roller are equipped with a high-temperature-resistant conveyor belt one. The conveyor belt one is provided with uniformly distributed tiny holes. The roller one is located on the left side of the main box. The first roller is located on the right side of the second roller. USE - The method is useful for preparing thermally conductive graphene film. ADVANTAGE - The method: can continuously prepare graphene film; can easily taken off the obtained film; avoids the film damage too much in the carrier separation process; reduces the separation difficulty; and improves the working efficiency. DETAILED DESCRIPTION - Preparing thermally conductive graphene film comprises (i) placing the pre-obtained powdered graphene raw materials into the preparation device, and then starting the preparation device, preheating the preparation device, reaching the predetermined temperature, starting the preparation device to obtain graphene film, and (ii) removing the graphene film produced in the step (i) from the second conveyor belt and winding on the product roll, passing the inspection, sending to the warehouse for storing. The preparation device includes a main box. The main box is rotatably installed with roller one and roller two. The first roller is the same size as the second roller. The first roller and the second roller are equipped with a high-temperature-resistant conveyor belt one. The surface of the conveyor belt one is coated with a silica coating. The conveyor belt one is provided with uniformly distributed tiny holes. The roller one is located on the left side of the main box. The first roller is located on the right side of the second roller. The first roller and the second roller are in contact with the main box only through the rotating shaft. Gathering box is installed in the main box. The upper part of the conveyor belt one penetrates the gathering box. The gathering box is located between the first roller and the second roller. Raw material spray head and a blowing plate are installed in the gathering box. The raw material spray head and the blowing plate are respectively located above and below the transmission belt one, and they do not touch each other. The blowing plate is uniformly provided with ventilation holes. The blowing plate is connecting with an air source. Raw material pipe is installed above the gathering box. The raw material pipe is connecting with the raw material spray head. Installation block is installed in the main box. Heat conducting air pipe is installed on the mounting block. Heating block is fixedly connected under the heat conducting air pipe. The heating block is located between the first roller and the second roller. The heating block is located on the right side of the gathering box. The second roller is uniformly provided with micro holes. The micro hole is perpendicular to the center line of the second roller. The second roller is provided with an air passage three. The micropores are all connected with the third airway. Installation cavity is opened on the second roller. The installation cavity is connected with the third airway. Air channel four is opened in the rotating shaft of the roller two. The airway four is connected with a gas source. The fourth airway is connected with the installation cavity through the first airway. Movable column is installed in the installation cavity. The movable column can move freely in the installation cavity. Spring is installed between the movable column and the installation cavity. The movable column is provided with a second airway. The second airway has an opening at the bottom of the movable column. Annular groove is provided on the movable column. The annular groove is connected with the second airway. The movable column can be retracted into the installation cavity, and the second airway is connected with the third airway through an annular groove. Pressure plate is installed in the main box. The pressure plate can squeeze the movable pole, and connecting the annular groove on the movable column with the third airway. The pressure plate is located on the right side of the second roller. The pressure plate is in contact with the second roller. Separating knife is installed in the main box. The separating knife is located on the right side of the second roller. The separating knife is in contact with the conveyor belt one on the second roller. The separating knife and the pressing plate are not in contact with each other. The separating knife is tangent to the rightmost part on the second roller. Three rollers and four rollers are installed in the main box. The roller three is smaller than the roller four. The three rollers are located directly below the separating knife. Two conveyor belts are installed on the roller three and roller four. The roller three is located on the left side of the roller four. The third roller and the fourth roller only contact the main box through the rotating shaft.