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Radiation crosslinking modified ethylene-tetrafluoroethylene insulated wire cable

A cross-linking modification, tetrafluoroethylene technology, applied in the direction of insulated cables, insulated conductors, organic insulators, etc., can solve the problems of thick insulation layer, large outer diameter of finished products, etc., to improve the temperature resistance level, high mechanical strength, technology The effect of uncomplicated process

Active Publication Date: 2006-11-22
GUANGZHOU KAIHENG SPECIAL WIRE & CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the insulated wires for aerospace use in the prior art use ethylene-tetrafluoroethylene polymer as the insulating layer. Due to the unreasonable production process and technical conditions, the products have thick insulating layers and large outer diameters, which cannot meet the requirements of aerospace. Wires require small size, light weight, high mechanical strength, high reliability, high temperature resistance, resistance to various aerospace oils, extreme complex use in various harsh environments, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Production example of 20AWG silver-plated copper conductor single-layer X-ETFE insulated wire, single-layer structure design, insulation nominal thickness ranges from 0.11 to 0.15mm.

[0029] Process flow:

[0030] Conductor stranding→insulation extrusion→irradiation pre-treatment→irradiation cross-linking modification→irradiation post-treatment→printing→products

[0031] Conductor stranding: use annealed silver-plated copper wire to strand according to the standard requirement of pitch ratio less than 20;

[0032] Insulation extrusion: special imported X-ETFE material is selected and carried out on a dedicated high-temperature extruder. The temperature in each zone of the high-temperature machine is within the range of 280-345°C, and the arithmetic difference increases; the drawing speed is 30m / min, and the stretching ratio is 8.

[0033] Pre-irradiation treatment: Properly ventilate in the ventilation room to remove moisture on the surface of the wire, and transfer ...

Embodiment 2

[0038] Production example of 22AWG nickel-plated copper conductor double-layer X-ETFE insulated wire; double-layer structure design, insulation nominal thickness ranges from 0.20 to 0.25mm.

[0039] Process flow:

[0040] Conductor stranding→insulation extrusion→irradiation pre-treatment→irradiation cross-linking modification→irradiation post-treatment→printing→products

[0041] Conductor stranding: use annealed nickel-plated copper wire to strand according to the standard requirement of pitch ratio less than 20;

[0042] Insulation extrusion:

[0043] Inner layer insulation extrusion: select special imported X-ETFE material, and carry out on a special high-temperature extruder. The temperature in each zone of the high-temperature machine is within the range of 280-345°C, and the arithmetic difference increases; the drawing speed is 30m / min, and the stretching ratio is 9;

[0044] Extrusion of outer layer insulation: special imported X-ETFE material is selected and carried ...

Embodiment 3

[0049] Production example of 20AWG silver-plated copper conductor single-layer X-ETFE insulated silver-plated flat copper wire braided X-ETFE sheath cable; insulation material is cross-linked ethylene-tetrafluoroethylene polymer; single-layer structure design, insulation nominal thickness is 0.10 ~0.15mm range. :

[0050] Process flow:

[0051] Conductor stranding→insulation extrusion→flat copper wire braided shielding→sheath extrusion→irradiation pre-treatment→irradiation cross-linking modification→irradiation post-treatment→printing→products

[0052] Conductor stranding: use annealed silver-plated copper wire to strand according to the standard requirement of pitch ratio less than 20;

[0053]Insulation extrusion: special imported X-ETFE material is selected and carried out on a dedicated high-temperature extruder. The temperature in each zone of the high-temperature machine is within the range of 280-345°C, and the arithmetic difference increases; the drawing speed is 30...

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Abstract

The invention discloses an insulating wire cable of irradiation cross-linking modified ethane-perfluoroethylene polymer (X-ETFE) with metal screening layer and protecting layer, which is characterized by the following: the insulating thickness is 0.01-0.25 mm, which improves insulating wire heatproof grade; the product satisfies the aviation cable need under kinds of terrible climates.

Description

technical field [0001] The invention belongs to an insulated wire and cable, in particular to radiation cross-linked modified ethylene-tetrafluoroethylene (X-ETFE) insulated wire and cable for aerospace. Background technique [0002] At present, most of the insulated wires for aerospace use in the prior art use ethylene-tetrafluoroethylene polymer as the insulating layer. Due to the unreasonable production process and technical conditions, the products have thick insulating layers and large outer diameters, which cannot meet the requirements of aerospace. Wires require small size, light weight, high mechanical strength, high reliability, high temperature resistance, resistance to various aerospace oils, and use in extremely complex and harsh environments. Contents of the invention [0003] The object of the present invention is to propose a radiation cross-linked modified ethylene-tetrafluoroethylene polymer (X-ETFE) insulated wire and cable for the deficiencies of the pri...

Claims

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Application Information

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IPC IPC(8): H01B3/44C08L23/00H01B7/02H01B7/17H01B13/00
Inventor 张兆文黄淑贞刘长双
Owner GUANGZHOU KAIHENG SPECIAL WIRE & CABLE
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