High-temperature resistance light low voltage differential signaling (LVDS) data bus cable and preparation method thereof

Abstract

The invention provides a high-temperature resistance light low voltage differential signal (LVDS) data bus cable and a preparation method thereof. The cable is characterized in that the outer layer of a conductor is a fluoroethylene propylene insulating layer, wherein the insulating layer is stranded with a filling core; the outer layer of the insulating layer is a foamed polytetrafluoroethylene (PTFE) microporous tape wound coating; and a silver-plated copper wire braiding shielding layer is arranged between the wound layer and the fluoroethylene propylene sheath. The preparation method comprises the following steps: stranding the silver-plated copper alloy stranded wire with a wire and cable stranding machine to serve as a conductor; achieving insulation by adopting the fluoroethylene propylene material with a high-temperature cable extrusion machine outside the conductor, and stranding the insulating wire and the filling core by a cable former, wherein the filling core is stranded by foamed PTFE microporous tapes; braiding the silver-plated copper wire shielding layer by a braiding machine; and manufacturing the sheath by the fluoroethylene propylene material with a high-temperature cable extrusion machine. The cable has the advantages of high and low temperature resistance, aging resistance, flame retardance, light weight and small outer diameter; and the cable can providehigh reliability service in a severe environment, and is suitable for LVDS signal transmission in the navigation electronic field.

Description

Technical field: [0001] The invention is a high-temperature resistant light LVDS data bus cable and a preparation method thereof. The bus cable has high and low temperature resistance (-65°C to +200°C), aging resistance, corrosion resistance, flame retardancy, light weight and small outer diameter; It provides highly reliable services in an environment that is suitable for LVDS signal transmission in the field of avionics. Background technique: [0002] At present, there is no high-temperature-resistant light LVDS data bus cable in China. The cable is based on the ANSI / TIA / EIA-644-A-2001 "Electrical Characteristics of Low Voltage Differential Designed on the basis of Fluoropolymer Insulated Wire and Cable". Ordinary LVDS data bus cables are made of normal temperature materials, which have poor high and low temperature resistance; and the material is extruded thick, the outer diameter of the product is large, and the weight is heavy, requiring a large laying space. Inventi...

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Problems solved by technology

[0003] The invention proposes a high-temperature-resistant light LVDS data bus cable and its preparation method. The conductor is a high-strength silver-plated copper alloy stranded wire, which improves the mechanical strength of the cable conductor and solves the problem that the conductor is easily broken during assembly.

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