Low-smoke halogen-free flame-retardant coaxial cable with polyethylene insulating polyolefin sheath

Abstract

The invention discloses a low-smoke halogen-free flame-retardant coaxial cable with a polyethylene insulating polyolefin sheath, and belongs to the field of cables. The low-smoke halogen-free flame-retardant coaxial cable comprises four cable core conductors which are arranged in an annular array; the outer side of the cable core conductors is coated with an insulating layer; the outer side of theinsulating layer is wrapped with an inner shielding layer; the cable core conductor, the insulating layer and the inner shielding layer form a cable core; reinforcing cable cores are arranged among the four cable cores; the four cable cores are tightly attached to the reinforced cable core; a first outer shielding layer is arranged on the outer side of the cable core; a filling layer is arrangedin a gap between the first outer shielding layer and the cable core. According to the low-smoke halogen-free flame-retardant coaxial cable with the polyethylene insulating polyolefin sheath, the insulating layer, the multi-layer shielding layer, the inner sheath and the outer sheath are arranged, so the coaxial cable can be fully and effectively protected, the flame retardance, the oxidation resistance and the shielding performance of the coaxial cable are greatly improved, and the service life of the cable is prolonged.

Description

Technical field [0001] The invention relates to the technical field of cables, and more specifically to a polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable. Background technique [0002] Coaxial cable refers to a cable with two concentric conductors, and the conductor and shielding layer share the same axis. The most common coaxial cable consists of a copper conductor isolated by an insulating material. Outside of the inner insulating material is another layer of ring conductor and its insulator, and then the entire cable is covered by a polyvinyl chloride or Teflon material sheath . Coaxial cables are used by TV companies between TV users and community antennas, can also be used by telephone companies, and are also widely used in corporate intranets and Ethernet. Many cables or many pairs of cables can be put into the same insulating sheath, plus an amplifier, it can transmit signals to a long distance. [0003] A traditional coaxia...

AI Technical Summary

Problems solved by technology

[0003] The traditional coaxial cable consists of an inner conductor, a polyethylene insulation layer, an outer conductor shielding layer and a material sheath, wherein the outer conductor shielding layer is formed by braiding copper wires on an aluminum-plastic composite tape, resulting in a hard and flexible overall structure of the cable. Low, small bending radius, not suitable for corner installation, resulting in more difficult construction, and weak tensile capacity

In addition, the flame retardant effect is general and noise will be generated in the process of transmitting signals, and the noise will increase with the increase of transmission frequency, which will affect the receiving effect of terminal equipment

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