Apparatus for preparing macromolecule nano-fibre and spinning method thereof

The invention relates to a device for preparing macromolecule nano-fibre, and a spinning method. The device comprises: a nozzle which is connected with a fibre spraying tube and is electrically connected with the anode or the cathode of a high-voltage generator, wherein, a conductive receiving board is electrically connected with the cathode or the anode of the high-voltage generator; a drain sleeve, the lower port of which is sealed together with the upper port of the fibre spraying tube; and a heating coil which is arranged outside the fibre spraying tube and enwraps the fibre spraying tube tightly, wherein, a temperature transmitter is positioned between the heating coil and the fibre spraying tube and is attached to the fibre spraying tube, and a temperature feedback controller is electrically connected with the temperature transmitter and the heating coil respectively. A signal which is measured by the temperature transmitter is received and the working of the heating coil is regulated and controlled, to lead the contained macromolecular solution to reach the preset temperature. In the spinning method, the macromolecular solution which is prepared by polymer material is contained in the fibre spraying tube, and is heated until the temperature reaches the preset temperature through the temperature feedback controller; pressure is loaded, the macromolecule nano-fibre flows out from the nozzle under the action of the electric field force and is collected on the receiving board.