Wire and cable as a whole can be divided into four structural components: conductor, insulation layer, shielding, and protective layer. Among them, copper is widely used because of its excellent electrical conductivity and good thermal conductivity. It realizes power transmission and distribution in the electronics industry. But you will occasionally find that copper conductors become black. Why is this?
There are many reasons for the blackening of the copper wire. First of all, for example, the cooling water for the copper wire is generally tap water or groundwater. In some areas, the pH value of the water quality is low, only 5.5~5.0 (normally 7.0~7.5), which will wash away the anti-oxidant oil film in the original emulsion, and the annealed copper wire is easy to oxidize and turn black. In addition, due to the widespread use of high-speed wire drawing at present, the speed is increased, and the relative heat dissipation time is reduced, which brings a certain amount of space and time to oxidation.
To solve the blackening of copper wire, attention needs to be paid to production, storage and maintenance. The rubber compound crosslinking agent is used for insulation, which can effectively keep the copper conductor in a reduced state, that is, not oxidized. And with the use of antioxidants MB and RD to passivate the copper surface, it can solve the blackening problem of the copper conductor of the wire and cable. Secondly, the copper wire should be stored in a dry weather environment. During the production of the cable, the copper wire should be wrapped and stored with a plastic film to reduce copper oxidation. It should be noted that the bacteria multiply faster in the yellow mold rain season in spring, and anti-fungal agents can be used, and antioxidants can be used in summer.
The oxidation of copper will affect the current transmission effect of wires and cables. For general consumers, it is not realistic to maintain copper wires, so it is very important to choose a reliable wire and cable brand. TXGA provides various specifications of wires and cables in stock, which are stable and durable, customized by the original factory, and quickly shipped from stock. Enter TXGA [Product Center] to place orders online for convenient purchase.
