Audio and video signal transmission conduction wire

Abstract

The invention relates to an audio and video signal transmission conduction wire which comprises an inner conductor, and a PE (Polyethylene) insulation layer, a composite shielding layer and a PE outer sheath layer that are layered and covered from inside to outside, beginning from the inner conductor, wherein the PE insulation layer, the composite shielding layer and the PE outer sheath layer that are layered and covered from the inside to the outside are formed by once injection moulding via a multilayer coextrusion production technology; the composite shielding layer is mixed by and comprises the following raw materials in parts by weight: 70-80 parts of polyvinyl resin, 10-20 parts of PE flexibilizer, 20-40 parts of metallic coating graphite powder, 10-20 parts of electromagnetic powder, 2-5 parts of stabilizing agent having an acid absorbing effect, 2-3 parts of PE lubricating agent, 1-3 parts of PE modifying agent or 1-3 parts of elastomer, and 10-30 parts of PE synthetizing agent. The wire has an excellent conduction shielding effect, is tasteless and nontoxic, and has the advantages that the wire is light in weight, low in cost and corrosion-resistant, copper products and energy consumption can be saved, and production equipment is simpler.

Description

technical field [0001] The invention relates to an audio and video signal transmission conductive wire. Background technique [0002] The existing audio and video signal transmission conductive lines are mainly composed of an inner conductor and an insulating layer, a shielding layer and an outer sheath layer covering the inner conductor sequentially from the inside to the outside. At present, polyethylene, polypropylene, polyvinyl chloride, polystyrene, nylon, polybutylene terephthalate, etc. have been used as insulating layers or protective layers isolated from the external environment. The shielding layer is mostly made of wire braided The shielding layer of the mesh, the shielding layer of the wire braided mesh is mostly made of copper wire drawing and then woven, so there are the following disadvantages: 1), the shielding effect is directly related to the density of the wire braided mesh, because the wire braided mesh shielding The layer is mesh, the shielding is uneve...

AI Technical Summary

Problems solved by technology

At present, polyethylene, polypropylene, polyvinyl chloride, polystyrene, nylon, polybutylene terephthalate, etc. have been used as insulating layers or protective layers isolated from the external environment. The shielding layer is mostly made of wire braided The shielding layer of the mesh, the shielding layer of the wire braided mesh is mostly made of copper wire drawing and then woven, so there are the following disadvantages: 1), the shielding effect is directly related to the density of the wire braided mesh, because the wire braided mesh shielding The layer is mesh, the shielding is uneven, and the shielding effect is not ideal; 2). The copper wire drawing process not only requires a large amount of copper resources, but also drives the rapid increase in copper consumption and price, and the wire drawing and weaving process consumes a lot of power , the production efficiency is low, the production cost is high, and the weight of the signal line is increased; 3), due to the unsatisfactory shielding effect, the effective transmission distance is short, and the amplifier must be installed in the middle when the line laying distance is long, which not only increases the cost of materials and equipment , also increases the difficulty of installation

Acid and alkali resistance, abrasion resistance, good electrical insulation, non-combustible; however, its thermal stability and light resistance are poor, and it decomposes at 140°C to release hydrogen chloride. Because PVC contains chlorine, it will release chlorine gas when heated, and air The water in it reacts and produces hydrogen chloride gas. Therefore, the production process of PVC conductive wire is poisonous to workers; when a fire occurs, the thick smoke generated by the burning of PVC conductive wire will cause serious harm to the human body.

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