CN202189581U

CN202189581U - Polyimide cable for aerospace

Info

Publication number: CN202189581U
Application number: CN2011202558476U
Authority: CN
Inventors: 姜绪宏; 贾超; 计克云
Original assignee: ANHUI HONGYUAN CABLE GROUP Co Ltd
Current assignee: ANHUI HONGYUAN CABLE GROUP Co Ltd
Priority date: 2011-07-19
Filing date: 2011-07-19
Publication date: 2012-04-11
Anticipated expiration: 2021-07-19

Abstract

The utility model discloses a polyimide cable for aerospace. The polyimide cable includes a plurality of bunched silver-coated copper wire conductors. The outside of the conductor is wrapped with a polyimide composite film insulating layer and a silver-coated copper foil belting layer in order. The outermost layer of the cable is a sheath layer which is wrapped by a PTFE (poly tetra fluoro ethylene) tape. The cable has excellent high-energy electron resistance, excellent high and low temperature impact resistance, and excellent various chemical solvent resistance. Besides, the cable is small in external diameter and is light in weight. The cable is especially suitable for the connection of an electric appliance and an instrument line in the aerospace field.

Description

A kind of polyimides Aero-Space are used cable

Technical field

The utility model relates to a kind of cable, and specifically a kind of polyimides Aero-Space are used cable.

Background technology

Along with Chinese development of aviation, the aircraft of more and more models is developed, and the cable that connects usefulness as electric and electronic equipment circuit is widely used.Because the particularity of Aviation cable environment for use, need cable to have performances such as excellent anti-high energy electron irradiation, high-low temperature resistant impact, corrosion-resistant, chemically-resistant solution usually.

Summary of the invention

For overcoming the defective of prior art; The purpose of the utility model is to provide a kind of polyimides Aero-Space to use cable; Not only have performances such as excellent anti-high energy electron irradiation, high-low temperature resistant impact, corrosion-resistant, chemically-resistant solution, and the external diameter of cable is little, in light weight.

The utility model technical solution problem adopts following technical scheme:

A kind of polyimides Aero-Space are used cable, comprise the silver-coated copper wire conductor of multiply bunchy, outside said conductor, are surrounded with polyimide composite film insulating barrier, silver-plated Copper Foil belting layer successively, and the outermost layer of cable is the wrapped restrictive coating of raw material band.

Compared with present technology, the beneficial effect of the utility model is embodied in:

1, external diameter is little; Because silver-plated Copper Foil band thickness is merely 0.1～0.12mm; It is wrapped to adopt nothing to put up opposite joint in the wrapped process; Just can reach the identical shield effectiveness of silver-coated copper wire braid shielded, such screen is than the about 0.2～0.3mm of silver-coated copper wire braid shielded outer conductor reduced diameter, and this earning rate in wrapped structural cable is very high.

2, in light weight, because the density of silver-plated Copper Foil band is at 6.4g/cm ³About, and the density of silver-coated copper wire is at 8.9g/cm ³More than; Adopt wrapped structure to lack one deck than braiding structure simultaneously and hide, the screen weight of cable will alleviate like this, is example with the common weight cable of 4 core 20AWG; Adopt wrapped silver-plated Copper Foil band to replace the silver-coated copper wire braid shielded, final finished weight can reduce 4.2g/m.

3, shield effectiveness is good, in the process of the anti-electromagnetic interference of screen, mainly leans on material absorption electromagnetic wave itself and reflection electromagnetic wave to reach the purpose that increases shielding attenuation.Silver-plated Copper Foil band is that offshore company adopts brand-new complex technique to be dispersed in the band silver-plated copper is evengranular;

Form

2 or 2 with upper shielding layer; Disturb electromagnetic wave through in the band process, will form repeatedly reflection, reduce the purpose of disturbing thereby reach.And the silver-coated copper wire count is generally about 90%, has the part electromagnetic wave like this and penetrates cable inside through the braiding slit, forms and disturbs.And adopt silver-plated Copper Foil band wrapped; Shielding density has reached 100%; Increased the anti-electromagnetic interference performance of cable so effectively, the shielding of two kinds of forms is through measures of quantization, and the cable shield pad value under the 500MHz frequency is suitable; The shielding attenuation value of wrapped structure under 500MHz～1GHz frequency is better than braiding silver-coated copper wire shielding construction slightly.

Description of drawings

Fig. 1 is the structural representation of the utility model cable.

Label among the figure: 1 conductor, 2 insulating barriers, 3 belting layers, 4 restrictive coatings.

Below pass through embodiment, and combine accompanying drawing that the utility model is described further.

Embodiment

Embodiment: combine Fig. 1; The polyimides Aero-Space of present embodiment are used cable; Use the stranded multiply silver-plated copper of accurate stranding machine twisted wire as conductor 1; Outside conductor 1, adopt the polyimide composite film band wrapped after oversintering forms insulating barrier 2, with behind the warping winch multicore stranding with the wrapped silver-plated Copper Foil belting layer 3 of machine, the outermost layer of cable adopts formation restrictive coating 4 behind the wrapped sintering of raw material band.The utility model cable has performances such as excellent anti-high energy electron, high-low temperature resistant impact, anti-various chemical solvents, and external diameter is little, and is in light weight.Be particularly suitable for using connection at Aeronautics and Astronautics field electric equipment and instrument circuit.

Claims

1. polyimides Aero-Space are used cable; The silver-coated copper wire conductor (1) that comprises the multiply bunchy; It is characterized in that outside said conductor (1), be surrounded with polyimide composite film insulating barrier (2), silver-plated Copper Foil belting layer (3) successively, the outermost layer of cable is the wrapped restrictive coating of raw material band (4).