The development of Electric Wire and cable products is […]
The development of Electric Wire and cable products is essentially the process of material replacement. Wire and cable uses a wide range of different occasions for its performance requirements vary widely. Most cable insulation materials, in addition to having high insulation resistance, dielectric strength or low dielectric loss, must also take into account the good physical and mechanical properties, such as tensile, bending, vibration, torsion, etc.; The jacket material is due to adapt to different environments and occasions, there are tear resistance, high and low temperature, weather, oil, solvent resistance and other requirements; some are made for the finished cable composite requirements, such as radial, longitudinal pressure Sealing, flame retardant, fire-resistant and so on. In the premise of these requirements superimposed on each other, the reasonable choice of materials and the cable is able to meet the customer's requirements determine the factors.
The current electric wire and cable insulation materials can be roughly divided into plastic insulation materials and rubber insulation materials.
PVC, PE, XLPE, PP is the most widely used plastic wire and cable industry. PVC is widely used in low-voltage cables due to its convenient process, good mechanical and electrical properties, flame retardancy and low cost. PE is often used in weak electric field due to its excellent electrical properties, moisture resistance, cold resistance and moderate mechanical properties Cable insulation and outdoor cable sheathing, and XLPE because of its excellent electrical and mechanical properties, high voltage cable insulation is widely used; PP due to its superior electrical properties, good high temperature and oil resistance, usually used for communications The insulation of cables and oil well cables is also the preferred insulation for telephone and computerized cord.