FIELD: chemical and physical processes.
SUBSTANCE: invention relates to a method of producing insoluble anode from reinforced lead dioxide with a working surface of lead dioxide, in which by electrochemical method, a preliminary thin layer of lead dioxide with thickness of not more than 0.05–0.1 mm is deposited on an electrically conductive substrate of titanium or niobium, on top of which there performed is wire reinforcement in chemically resistant insulation with subsequent complete reduction of reinforcement by electrodeposited lead dioxide and creation of external electric contact from nickel foil and its isolation from aggressive solutions by chemical resistant sealant. Method is characterized by that billet reinforcement is carried out by stranded copper wire in chemically resistant insulation from polyvinyl chloride or double insulation from fluoroplastic, outer diameter of wire of 0.5–3.0 mm, in form of winding, mesh or braid so that billet is transversely and longitudinally contracted with mesh cells size during reinforcement from 3 to 10 mm, then electrodeposition process of lead dioxide is carried out, which is carried out continuously from lead nitrate solution until complete reinforcement of reinforcing wire, after that, at the selected section of the billet, an electric contact is created, for what on a clean surface of lead dioxide by a method of mechanical rubbing, a layer of metallic silver is applied, then surface of lead dioxide with coating from metal silver is tightly covered with nickel foil, to which is soldered or welded current lead – copper wire in chemically resistant insulation, obtained electric contact is isolated from chemically aggressive solutions by layers from chemically resistant sealant and tape from polyvinyl chloride or fluoroplastic, further, the end face and angles of the finished electrode are protected against accidental mechanical shocks with a layer of chemically resistant sealant.
EFFECT: technical effect is considerable increase of service life and time of failure-free operation of electrode used as insoluble anode in chemically aggressive solutions and electrolytes.
8 cl, 2 ex
