▎ 摘　　要

NOVELTY - A device for preparing graphene film, comprising a groove body, the groove body is provided with several idler wheels, the idler wheel is wound with a transmission belt, the transmission belt is in contact with the graphene solution, said conveyor belt away from one side of the graphene oxide solution which can generate hot air blowing, said blowing of multiple air openings and the conveyor belt is 15 degrees to 30 degrees. this wind blows hot air not directly front impact to the surface of graphene, so as to greatly reduce the force of the graphene hot, reducing the possibility of graphene from being damaged. Furthermore, since the hot air is blown toward the graphene film, so it can avoid excessive wrinkling of graphene film is heated, so as to ensure the flatness of the product.