Double-layer metal cladded flame-retardant electric cable

Abstract

The invention relates to a double-layer metal cladded flame-retardant electric cable which is manufactured by cladding an insulation layer and a conductive core wire, wherein the conductive core wire is manufactured by cladding double layers of different metal materials; the insulation layer is made of a smokeless and flame-retardance nano modified polyvinyl hydrocarbon polymer insulation material; a flame-retardance jacket is cladded outside the insulation layer; and the conductive core wire is made of copper clad aluminum, copper clad steel or aluminum clad steel. The double-layer metal cladded flame-retardant electric cable is safe and reliable, has less smoke generation amount in a combustion environment when accidents happen, better flame retardance and no harmless gases or corrosivegases and can be used for effectively reducing accidental loss and reducing material cost.

Description

technical field [0001] The invention relates to a wire and cable, in particular to a double-layer metal-cored flame-retardant wire and cable, which belongs to the technical field of electric products. Background technique [0002] At present, the wires and cables produced by Chinese enterprises are made of conductive core wires and insulating materials. The conductive core wires are mostly made of aluminum or copper, and the outer insulating materials are mainly polyvinyl chloride and polyethylene materials. Yes: the conductivity of copper is better than that of aluminum, but the cost is higher; while the flexibility of aluminum is better, the conductivity is weaker, and the polyvinyl chloride and polyethylene wires and cables in the insulating material are prone to short circuit accidents in the electrical system. Fire will produce harmful gas, especially the chlorine content of polyvinyl chloride insulation material is as high as 56%. When burning, it will release high con...

AI Technical Summary

Problems solved by technology

[0002] At present, the wires and cables produced by Chinese enterprises are made of conductive core wires and insulating materials. The conductive core wires are mostly made of aluminum or copper, and the outer insulating materials are mainly polyvinyl chloride and polyethylene materials. Yes: the conductivity of copper is better than that of aluminum, but the cost is higher; while the flexibility of aluminum is better, the conductivity is weaker, and the polyvinyl chloride and polyethylene wires and cables in the insulating material are prone to short circuit accidents in the electrical system. Fire will produce harmful gas, especially the chlorine content of polyvinyl chloride insulation material is as high as 56%, and it will release high concentration of toxic smoke when burning, which will hinder the sight, affect escape and fire fighting, and even directly cause death

Images