METHOD FOR MAKING FUNCTIONALLY GRADIENT COATINGS BY 3D PRINTING BASED ON ELECTROSTATIC SPINNING AND ELECTROSTATIC SPRAYING

摘要

A method for making functionally gradient coatings by 3D printing based on electrostatic spinning and electrostatic spraying is disclosed, which uses a hybrid 3D printing system based on electrostatic spinning and electrostatic spraying including: a first injection pump, a second injection pump, a first nozzle, a second nozzle, a high voltage power supply, a core rod collector, a controller, a motor and a speed-adjusting unit. The first injection pump, the first nozzle, the high voltage power supply, the core rod collector and the controller constitute an electrostatic spinning subsystem. The second injection pump, the second nozzle, the high voltage power supply, the core rod collector and the controller constitute an electrostatic spraying subsystem. The electrostatic spinning subsystem is controlled by the controller to generate a first material coating, and the electrostatic spraying subsystem is controlled by the controller to generate a second material coating. The method can make multiple layers of functional gradient coatings according to individual needs.

主权项

1. A method for making functionally gradient coatings by 3D printing based on electrostatic spinning and electrostatic spraying, using a hybrid 3D printing system based on electrostatic spinning and electrostatic spraying, wherein the hybrid 3D printing system comprises:
a first injection pump, a second injection pump, a first nozzle, a second nozzle, a high voltage power supply, a core rod collector, a controller, a motor and a speed-adjusting unit; the first injection pump, the first nozzle, the high voltage power supply, the core rod collector and the controller constitute an electrostatic spinning subsystem which uses the high voltage power supply to apply a first high-voltage electrostatic field so that first material sprayed from the first nozzle forms filaments under the applied first high-voltage electrostatic field, and the core rod collector is adapted to collect the filaments to form a first material coating; the second injection pump, the second nozzle, the high voltage power supply, the core rod collector and the controller constitute an electrostatic spraying subsystem which uses the high voltage power supply to apply a second high-voltage electrostatic field so that second material prayed from the second nozzle move in a definite direction under the applied second high-voltage electrostatic field, and the core rod collector is adapted to collect the second material to form a second material coating; and the method comprise: step A, controlling the electrostatic spinning subsystem, by the controller, to generate the first material coating; and step B, controlling the electrostatic spraying subsystem, by the controller, to generate the second material coating.