CN201498255U

CN201498255U - Fluorine plastic foam data bus cable

Info

Publication number: CN201498255U
Application number: CN2009202209069U
Authority: CN
Inventors: 刘士龙; 延治国; 贾超; 张岩; 尤满明; 王国强; 张明月; 于玉波
Original assignee: TIANJIN YIXINTONG TECHNOLOGY Co Ltd
Current assignee: TIANJIN YIXINTONG TECHNOLOGY Co Ltd
Priority date: 2009-09-27
Filing date: 2009-09-27
Publication date: 2010-06-02
Anticipated expiration: 2019-09-27

Abstract

The utility model relates to a fluorine plastic foam data bus cable for transmitting multi-path compound signals in the fields such as aerospace, electronics and the like. The cable comprises insulated wires, filling cores, a shielding layer and a sheath which are formed by externally extruding a foam insulated layer on an inner conductor. The shielding layer and the sheath are sequentially arranged after two insulated wires and two filling cores are respectively symmetrically arranged and stranded into a bundle; the inner conductor is made of a plurality of silver-coated high-strength copper alloy monofilaments; the shielding layer is made of poly perfluoro propylene foam materials; the shielding layer includes double layers; an inner layer of the shielding layer is made of aluminum-plastic composite tapes; an outer layer of the shielding layer is made of silver-coated copper wires or is a tinned copper wire braided layer; and the filling cores and the sheath are made of fluorine materials. By adopting the poly perfluoro propylene physical foam as insulated materials, the cable can reduce dielectric constant of the materials, decrease signal attenuation in transmission, greatly lighten the weight of product, improve tension resistance of the product, and has fine fire resistance, high-temperature resistance, low-temperature resistance, stable electrical performance and complete and stable structure.

Description

Fluoroplastics foaming data bus cable

Technical field

The utility model relates to a kind of cable, particularly a kind of fluoroplastics foaming data bus cable that is used for neighborhood system multichannel composite signal transmission usefulness such as Aero-Space, electronics.

Background technology

Along with aviation, the develop rapidly of space flight and electronics industry and defence engineering proposes higher requirement to the cable of signal transmission usefulness, and cable is to miniaturization, developing direction such as in light weight, high temperature resistant.General data cable is third rare with polyethylene, perfluoroethylene, polytetrafluoroethylene is as insulating material, with polyethylene as packing material, these materials are fire-retardant, intensity and signal attenuation index and high and low temperature resistance are all poor, can not satisfy the job requirement of complete machine.

Summary of the invention

In view of the deficiency that prior art exists, the utility model provides a kind of employing perfluoroethylene-propylene expanded material as insulating material, and the fluorine material is as filled core, structure rounding stable data bus cable.

The utility model for achieving the above object, the technical scheme that is adopted is: a kind of fluoroplastics foaming data bus cable, it is characterized in that: the conductor that included extrudes insulated electric conductor, filled core, screen and the sheath that one deck foaming insulation layer constitutes outward, after two described insulated electric conductors, two described filled cores are symmetrical arranged stranded bunchy respectively, be provided with screen, sheath more successively.

In the above-mentioned fluoroplastics foaming data bus cable: described inner wire is the silver-plated high strength copper alloy monofilament of multiply.Described insulating barrier is the perfluoroethylene-propylene expanded material.Described screen is double-deck, and internal layer is that aluminium-plastic tape, skin are silver-gilt copper wire or tincopper fuse wire braided armor.Described filled core and sheath are the fluorine material.

The beneficial effects of the utility model are: 1, decay is little: the perfluoroethylene-propylene physical blowing is as insulating layer material, and this kind air can lower the dielectric constant of material greatly, makes signal decay when transmission little.2, in light weight: perfluoroethylene-propylene physical foaming material, the weight of the product that reduces have greatly been adopted in insulation.3, good mechanical property: adopted high-intensity silver-plated copper alloy as conductor, improved the stretching resistance of product.4, good flame resistance: adopted the insulation of fluorine material, filled, and sheath material, this kind material has very high fire resistance.5, high temperature resistant: the fluorine material is high temperature resistant, the temperature that works long hours can reach 200 ℃.6, low temperature resistant: the fluorine material is low temperature resistant, the temperature that works long hours can reach-65 ℃.7, Electro Magnetic Compatibility: adopted aluminium-plastic tape to add the structure of braiding, anti-electromagnetic interference capability 8, the stability of raising product: added round filled core between insulation, made the product electric performance stablity, the structure rounding is stable.

Description of drawings

Fig. 1 is a structural representation of the present utility model and as Figure of abstract.

Embodiment

As shown in Figure 1, fluoroplastics foaming data bus cable comprises that high strength silver-plated copper alloy adds silver-plated or zinc-plated braid as screen 4, fluorine material guards 5 as insulation 2, circular polytetrafluoroethylene as filled core 3, aluminium-plastic tape as conductor 1, perfluoroethylene-propylene foaming.

The utility model can obtain by following technical process manufacturing: use electric wire cable strand machine or the silver-plated high strength copper alloy monofilament of the stranded multiply of bunching machine as inner wire 1-1, extrude perfluoroethylene-propylene foaming insulation layer 1-2 at inner wire 1-1 external application cable extrusion foaming equipment and constitute insulated electric conductor 1, extrude circular fluorine material as filled core 2 with cable machinery, thoroughly do away with edge electric wire 1 with two, two filled cores 2 are symmetrical arranged respectively together, with cabler insulated electric conductor 1 and filled core 2 are twisted together, wrapped one deck adds aluminium-plastic tape outside it again, outside aluminium-plastic tape, adopt braiding machine braiding one deck silver-plated copper or tinned copper wire screen 3, outside screen 3, extrude the fluorine material as sheath 4.

Claims

1. fluoroplastics foaming data bus cable, it is characterized in that: outer insulated electric conductor (1), filled core (2), screen (3) and the sheath (4) that extrudes one deck foaming insulation layer (1-2) formation of the conductor that included (1-1), after two described insulated electric conductors (1), two described filled cores (2) are symmetrical arranged stranded bunchy respectively, be provided with screen (3), sheath (4) more successively.

2. fluoroplastics foaming data bus cable according to claim 1, it is characterized in that: described insulating barrier (1-2) is the perfluoroethylene-propylene expanded material.

3. fluoroplastics foaming data bus cable according to claim 1, it is characterized in that: described screen (3) is for double-deck, and internal layer is an aluminium-plastic tape, and skin is silver-gilt copper wire or tincopper fuse wire braided armor.

4. fluoroplastics foaming data bus cable according to claim 1, it is characterized in that: described filled core (2) is a polytetrafluoroethylmaterial material.