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Production method of aerospace radiation-resistant cable

A radiation-resistant cable, aerospace technology, used in cable/conductor manufacturing, insulated cables, cables, etc., can solve the problem of high strength, achieve high voltage resistance, excellent radiation resistance, excellent electrical insulation and mechanical properties. Effect

Active Publication Date: 2015-05-27
NANJING QUANXIN CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the product lacks the relevant properties that should be used in special environments: such as ① radiation resistance; ② high temperature resistance; ③ aging resistance; ④ high strength and other properties

Method used

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  • Production method of aerospace radiation-resistant cable
  • Production method of aerospace radiation-resistant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] AWG18 wire, twisted with 19 pieces of 0.26mm nickel-plated round copper wires, through a compression mold to obtain (1.23±0.03)mm stranded conductors; use a concentric wrapping machine to wrap 3 layers of 0.0254mm thick PI tape, and cover The rate is between 67%%; after wrapping, use an extruder to extrude pure polyetheretherketone (PEEK) material with a thickness of 0.30mm to obtain a PEEK layer with high crystallinity, so that the temperature resistance level of PEEK can reach 260°C; then use a wrapping machine to wrap 3 layers of PI tape with a thickness of 0.0254mm, the wrapping rate is between 67% and 70%, and finally form a composite insulating layer of PI+PEEK+PI; the volume resistivity is 10 3 PEEK semi-conductive material between Ω·cm, extrude PEEK semi-conductive material with a thickness of 0.20mm with an extruder to form a semi-conductive layer, so that the semi-conductive layer has an anti-static effect; finally use 0.15mm nickel-plated round copper wire Br...

Embodiment 2

[0028] AWG18 wire, twisted with 19 pieces of 0.26mm nickel-plated round copper wires, through a compression mold to obtain (1.23±0.03)mm stranded conductors; use a concentric wrapping machine to wrap 3 layers of 0.0254mm thick PI tape, and cover The rate is between 67% and 70%; after wrapping, extrude pure polyether ether ketone (PEEK) material with a thickness of 0.30mm by extruder to obtain a PEEK layer with high crystallinity, so that the temperature resistance level of PEEK It can reach 260°C; then use a wrapping machine to wrap 3 layers of PI tape with a thickness of 0.0254mm, the wrapping rate is between 70%, and finally form a composite insulating layer of PI+PEEK+PI; the volume resistivity is 10 7 PEEK semi-conductive material between Ω·cm, extrude PEEK semi-conductive material with a thickness of 0.20mm with an extruder to form a semi-conductive layer, so that the semi-conductive layer has an anti-static effect; finally use 0.15mm nickel-plated round copper wire Braid...

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Abstract

The invention relates to a production method of an aerospace radiation-resistant cable. The cable is a shielded sheathless cable with a single core. A composite insulating layer formed by polyimide taping, polyetheretherketone extrusion and polyimide tapping is arranged outside a conductor formed by stranding multiple nickeled copper wires, a semiconducting layer formed by semiconducting PEEK (polyetheretherketone) extrusion is arranged outside the composite insulating layer, and a shield layer formed by woven nickeled copper wires is arranged outside the semiconducting layer. The cable is 2500V in nominal voltage. The aerospace radiation-resistant cable has the advantages that the nominal voltage reaches 2500V, the cable is resistant to temperature of from -100 DEG C to +260 DEG C and is ageing-resistant, impact-resistant, cracking-resistant, high in strength, resistant to bending, retardant to flame and suitable for special aerospace environments and is used for equipment signal control and current transmission; the radiation-resistant materials, namely PI (polyimide) and PEEK, are made into the insulating layer, the semiconducting material and nicked round copper wire woven structure is used, and accordingly the cable is capable of resisting 2*109rad radiation and preventing electrostatic discharge; and the cable can be normally laid and installed at the temperature below -100 DEG C.

Description

technical field [0001] The invention is a preparation method of radiation-resistant cables for aerospace, which can adapt to the harsh environment of aerospace, has excellent radiation resistance, anti-static discharge performance, mechanical properties and electrical properties, and is within the range of (-100 to +260) °C long-term use. Background technique [0002] The existing products are based on GJB 773A-2000 "General Specification for Fluoropolymer Insulated Wires and Cables for Aerospace" and at the same time refer to the US military standard MIL-W-22759 "MILITARY SPECIFICATION SHEET" standard. However, the product lacks the relevant properties that should be used in special environments: such as ① radiation resistance; ② high temperature resistance; ③ aging resistance; ④ high strength and other properties. Contents of the invention [0003] The present invention proposes a method for preparing a radiation-resistant cable for aerospace, which aims to overcome the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B7/17H01B7/28H01B7/29
Inventor 李峰欧荣金石磊许宪成樊群李春红陈祥楼成绍强赖洪林
Owner NANJING QUANXIN CABLE TECH
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