Preparation method and equipment for ion exchange membrane with dopamine layer

The invention provides a preparation method and equipment for an ion exchange membrane with a dopamine layer. The method includes the steps that an ion exchange membrane is fixed into a device containing a dopamine solution, the dopamine solution is prepared, the dopamine layer is prepared, and the modified ion exchange membrane with the dopamine layer is prepared. The equipment comprises a first ventilation chamber, a material liquid chamber, a second ventilation chamber, an electric stirrer and an air transmission pump, and the first ventilation chamber, the material liquid chamber and the second ventilation chamber are fixedly connected to form a sealed three-chamber structure; the two side faces of the material liquid chamber are provided with through holes communicate with the inner cavity of the material liquid chamber, and the through holes are provided with ion exchange membranes; an air inlet of the first ventilation chamber and an air inlet of the second ventilation chamber are communicated with an