Method for producing conductive polyaniline polymer

The invention discloses a preparation method of a conductive polyaniline polymer. The preparation method comprises the following steps: respectively preparing a polyaniline dispersion liquid and a protonic acid aqueous solution; wherein the protonic acid aqueous solution is regulated to have a first pH value; respectively adding the polyaniline dispersion liquid and the protonic acid aqueous solution into the reaction tank to form a reaction mixture, and regulating the reaction mixture to have a second pH value greater than the first pH value; and heating the reaction mixture to a first temperature, so that the protonic acid and the polyaniline polymer are subjected to a mixing reaction, and the conductive polyaniline polymer is formed. The pH value of the reaction mixture is changed in the mixing reaction process. And when the pH value of the reaction mixture is increased from the second pH value to a third pH value, cooling the reaction mixture to a second temperature to terminate the mixing reaction. There