A flame retardant and high temperature resistant computer cable and its preparation process

Abstract

The invention discloses a flame-retardant and high-temperature-resistant computer cable. The cable comprises core wires, first wrapping layers, a second wrapping layer, a shielding layer, an armor layer and a sheath layer. Each core wire comprises tinned copper core conductors and insulating layers; the outer side of each tinned copper core conductor is wrapped with the corresponding insulating layer; every two core wires are twisted to form a pair wire set; and the outer side of each pair wire set is wrapped with the corresponding first wrapping layer. According to the invention, the quartz fiber maintenance sleeve layer on the outer side of the cable has the advantages of flame retardance, high-temperature resistance, insulationresistance, ablation resistance, corrosion resistance, heatinsulation ability, wave transmission ability, excellent dielectric property and the like; the cable can be protected from combustion in case of a fire; compared with polyethylene insulation, the performance of the the cross-linked polyethylene insulation is greatly improved after cross-linking modification; the comprehensive performance such as the mechanical performance, the environmental stresscracking resistance, the chemical corrosion resistance, the creep resistance and the electrical performance is remarkably improved; and the temperature resistance level is remarkably improved.

Description

technical field [0001] The invention relates to the field of computer cable production, specifically a computer cable and a preparation process thereof, more specifically a flame-retardant and high-temperature-resistant computer cable and a preparation process thereof. Background technique [0002] Computer cables belong to cables for electrical equipment. This cable is suitable for electronic computers and automation instruments with high anti-interference requirements for rated voltages of 500V and below; The tape (mica tape, tissue paper tape, aluminum foil, polyester film, etc.) is rotated by the turntable and wrapped around the core wire. It is mainly used for wrapping insulating core wires of electric wires, power cables, control cables, optical cables, etc. [0003] When the existing computer cables are used, once the outside world burns, the computer cables will play a combustion-supporting effect, causing fires and causing huge economic losses; at the same time, wh...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flame-retardant and high-temperature-resistant computer cable and its preparation process. In order to overcome the above-mentioned existing computer cable, once the outside world burns, the computer cable will play a combustion-supporting effect, resulting in the occurrence of fire, causing Huge economic loss; at the same time, when the cable is wrapped by the wrapping device during the production process of the cable, when the tensile properties of the wrapping material are low, it is easy to cause the wrapping material to be twisted between the tape reel and the cable during the wrapping process After the cable is wrapped, the surface of the wrapping layer shows wrinkles, overlapping tapes, or even broken tapes. During the wrapping process, because the wrapping speed is very fast, if it is not found in time, it often leads to the fact that the cable has been folded and wrinkled. After a long period of time, the operator stops the machine again to disassemble the unqualified section, rewinds it by hand, removes the problematic tape reel, replaces the qualified tape reel, and restarts the machine, resulting in a waste of manpower and material resources; It is impossible to adjust the wrapping angle in real time according to the specific cable conditions; at the same time, the cable must always be straight and level during the wrapping process, and the existing wrapping device cannot quickly and conveniently adjust cables with different diameters, which affects Technical Problems of Cable Wrapping Efficiency

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