[China Aluminum Network] Electrolytic corrosion will occur when copper conductors are connected to aluminum conductors in power lines. When the copper wire and the key wire are connected. Because the raw materials are not the same. There is a certain potential difference between each other. The potential difference between copper and aluminum is approximately 1.7V. If water vapor is present, the electrolytic effect will occur, and the touch surface will be gradually eroded and oxidized. This will result in poor touch surface, increased touch resistance, and high temperature of the wire, causing seizures. Thus, copper wire and aluminum When the wires are connected, the necessary anti-corrosion measures should be adopted. For example, copper-aluminum transition clamps and copper-aluminum transition joints are used to prevent electrolytic corrosion. In addition. It is also possible to use the copper wire tinning method, that is, a layer of tin is plated on the copper wire lead, and then it is connected with the moving wire. Although copper has a higher conductivity than tin. However, the oxidation of the tin surface will form a very thin oxide film. Attached to the copper surface. Then it can prevent the inside of the wire from being continuously oxidized. Also, this tin oxide has a high electrical conductivity and is less susceptible to electrical contact corrosion with the aluminum wire and does not cause problems due to poor touch.
The POLYKEN 980,955 is a multilayer system used for the protection of steel pipelines. POLYKEN 1019,1027, Liquid Adhesives can be used as primers for this system.In addition to serving as primers, these liquidadhesives themselves represent an anticorrosion layer and provide a uniformly smooth contact surface to promote high adhesion of the coating system to the pipe. They are designed for machine or brush application and formulated with stress-corrosion cracking inhibitors. The Anti-Corrosion layer POLYKEN 980 is engineered to assure a high bond to the primed surface with excellent conformability characteristics. The mechanical protection layer POLYKEN 955,achieves a complete bond to the POLYKEN 980 inner layer, providing maximum handling and in-service protection for the coating system. The adhesives in these and all POLYKEN tape systems contain proven anti-microbial additives.The POLYKEN 980/955 can also be used for ductile iron pipes, in this case the use of 1027 primer is recommended.
Polyken 980 (Inner Wrap)
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