Low-smoke-amount and flame-retardant type composite data transmission cable

Abstract

The invention discloses a low-smoke-amount and flame-retardant type composite data transmission cable. The composite data transmission cable comprises two electric power copper conductors, two data copper conductors and filling ropes, wherein each of the two electric power copper conductors is coated with an insulating layer separately; the two insulating layers are arranged in parallel with a transverse 8 shape; the surfaces of the two insulating layers are covered with an inner sheath layer externally; the surfaces of a one-sided aluminum foil layer, the inner sheath layer and the filling ropes are coated with a polyester band layer; the outer surface of a flame-retardant layer is coated with an outer sheath layer; and the shielding insulating layers are prepared from the following components in parts by weight: PVC resin, ethylene-vinyl acetate copolymer, didecyl phthalate, polythiophene, siloxane, fumed silica, cerium sesquioxide, and antimony trioxide. By virtue of the low-smoke-amount and flame-retardant type composite data transmission cable, reflection and absorption on low-frequency electromagnetic wave are improved while crosstalk and signal attenuation are reduced; and in addition, the composite data transmission cable has relatively high stretching and tearing strength and physical and mechanical properties.

Description

technical field [0001] The invention relates to a data transmission cable, in particular to a flame-retardant composite data transmission cable with low smoke generation. Background technique [0002] In the existing integrated wiring system, 4 pairs of ordinary digital cables are generally used for Internet access and data transmission, local telephone cables are used for wiring, telephone and voice transmission, and ordinary coaxial cables are used for Internet TV and high-definition TV viewing, etc. , When the above cables are wired, they need to be wired in the same pipeline to affect and interfere with each other. [0003] Therefore, as the influence of electromagnetic radiation and capacitive coupling at low frequencies becomes more and more prominent, it seriously affects the electrical performance of each cable, resulting in the family's Internet speed, telephone call quality, and high-definition picture clarity. temperature, etc. will be affected to varying degrees...

AI Technical Summary

Problems solved by technology

[0002] In the existing integrated wiring system, 4 pairs of ordinary digital cables are generally used for Internet access and data transmission, local telephone cables are used for wiring, telephone and voice transmission, and ordinary coaxial cables are used for Internet TV and high-definition TV viewing, etc. , when the above cables are wired, they need to be wired in the same pipeline to affect and interfere with each other

[0003] Therefore, as the influence of electromagnetic radiation and capacitive coupling at low frequencies becomes more and more prominent, it seriously affects the electrical performance of each cable, resulting in the family's Internet speed, telephone call quality, and high-definition picture clarity. Temperature, etc. will be affected to varying degrees, and because each cable is an independent unit, after years of heating and heating, it is easy to cause the sheaths of the cables to stick to each other, which will eventually lead to broken skins, even leakage, and burning , resulting in a fire

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