Tensile high-frequency multi-core cable and preparation method thereof

Abstract

The invention discloses a tensile high-frequency multi-core cable and a preparation method thereof. The cable comprises a cable core formed by twisting a plurality of coaxial cable cores, a fluororesin wrapping tape layer, a copper-plastic composite tape wrapping shielding layer and an outer sheath, wherein the coaxial cable core comprises an inner conductor and a cable core body formed by concentrically twisting a plurality of PFA resin filling wires, an inner insulating layer, a metal winding shielding layer, a metal weaving shielding layer and an outer insulating layer sequentially coat theouter portion of the wire core body, the inner conductor is formed by twisting plural strands of wires, the stranded wire is formed by crossly and spirally twisting a plurality of tinned copper monofilaments with a diameter of 0.02-0.03 mm, the metal winding shielding layer is formed by spirally winding copper alloy wires in one direction, the metal weaving shielding layer is formed by spirally winding and weaving double-layer tinned copper wires in opposite directions, and the double-layer tinned copper wires are coated with lubricating oil. The cable has good tensile strength, flexibility,bending resistance and torsion resistance, and is not easy to break, small in high-frequency signal attenuation and durable in use.

Description

technical field [0001] The invention relates to the technical field of shielded cables, in particular to a stretch-resistant high-frequency multi-core cable and a preparation method thereof. Background technique [0002] An important carrier of electromagnetic noise transmission is various cables used in mechanical and electronic equipment. Some of them are noise sources and some are victims. To combat electromagnetic noise interference on electrical lines, a very important way is to use shielded cables. Multi-core cable is one of the main varieties of cables. In the electrical connection and control of mechanical and electronic equipment, medical equipment, etc., multi-core cables with good flexibility need to be applied. Under the trend of miniaturization of industrial machinery and equipment, multi-core cables are also developing in the direction of thinner diameter and flexibility. , which puts forward higher requirements for multi-core cables. Ordinary cables have a...

AI Technical Summary

Problems solved by technology

Ordinary cables have average tensile strength and poor core stretchability. After the cable has been bent and twisted many times, it is easy to break the core or shielding layer. The high-frequency signal transmission characteristics are poor, the shielding effect is unstable, and the electrical characteristics are affected. , not durable

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