Environment-friendly heating electric wire

Abstract

The invention provides an environment-friendly heating electric wire. An ultra-thin chromium-aluminum or chromium-nickel alloy steel belt is utilized as a heating conductor. The environment-friendly heating electric wire is characterized in that for the ultra-thin chromium-aluminum alloy steel belt, the weight ratio between chromium and aluminum is 21:6, and alternatively for the chromium-nickel alloy steel belt, the weight ratio between chromium and nickel is 20:35; the heating conductor meets the standard satisfying the equation that width mm*thickness mm=Jmm-25mm*0.025mm-0.6mm; an insulating layer with a thickness ranging from 0.3mm to 0.5mm wraps the heating conductor, a shielding layer wraps the insulating layer, and an external protective layer with a thickness ranging 0.3mm to 0.5mm wraps the shielding layer. According to the environment-friendly heating electric wire, no black smoke comes out in open fire, and produced harmful substance and poisonous gas are little. The producing and manufacturing process is not complex, the insulating layer and the protective layer are strong in adhesive force, the tightness degree of combination is high, a nylon layer is completely sealed and has no air, the surface is fine, smooth, round and beautiful, and the environment-friendly and inflaming retarding functions are achieved. In addition, the environment-friendly heating electric wire has the advantages of being water proof, damp proof, resistant to oil, abrasion and corrosion, and the like.

Description

technical field [0001] The invention relates to a wire and cable, in particular to an environment-friendly heating wire and cable that is used in roads, pipes, tanks in cold regions to increase temperature and melt ice, planting and breeding greenhouses, automobile engines, houses, etc. that need to be kept warm. Background technique [0002] At this stage, most of the PVC insulated wires used in engineering construction and market sales are insulated and coated with ordinary PVC plastics for electrical round copper wires. The production process is simple, the performance is qualified, and the price is low, so is widely adopted. But this kind of wire has a fatal flaw that it has poor flame retardancy, that is, once it encounters an open flame, it is easy to burn, and the polyvinyl chloride plastic will produce black solid derivatives, emit black smoke, and release toxic halogens. Acid gas, the derivatives and gases caused by these combustions are the real culprits of fires ...

AI Technical Summary

Problems solved by technology

But this kind of wire has a fatal flaw that it has poor flame retardancy, that is, once it encounters an open flame, it is easy to burn, and the polyvinyl chloride plastic will produce black solid derivatives, emit black smoke, and release toxic halogens. Acid gas, the derivatives and gases caused by these combustions are the real culprits of fires and casualties