Conductive shielding composite for audio and video signal transmission conductor wire

Abstract

The invention relates to a conductive shielding composite for an audio and video signal transmission conductor wire, which comprises the following raw materials by in parts by weight: 70-80 parts of polyethylene resin, 10-20 parts of PE (Poly Ethylene) flexibilizer, 20-40 parts of metallic coating graphite powder, 10-20 parts of electromagnetic powder, 2-5 parts of stabilizing agent with an acid absorption effect, 2-3 parts of PE lubricant, 1-3 parts of PE modifier or elastomer, and 10-30 parts of PE synthesis agent. The conductive shielding composite has the advantages of good conductive shielding effect, no odor, no toxin, light weight, corrosion resistance, low cost, copper saving, energy conservation, and simpler production equipment.

Description

technical field [0001] The invention relates to a conductive shielding composite material used for audio and video signal transmission conductive lines. Background technique [0002] The existing audio and video signal transmission conductive wires are mainly composed of an inner conductor and an insulating layer, a shielding layer and an outer sheath layer which are sequentially covered from the inner conductor 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 br...

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.