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High-dielectric constant high-temperature resistant wire and preparation method for same

A technology of high temperature resistant wires and high dielectric constant, applied in the direction of cable/conductor manufacturing, conductors, circuits, etc., can solve the problems of wire insulation damage, moisture resistance, easy cracking, etc., to prevent moisture absorption and mechanical damage, storage Easy installation and excellent resistance to chemical solvents

Active Publication Date: 2013-09-04
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems that the polyimide wrapped sintered wire is easy to crack when working in a high temperature environment of 500°C for a long time, and the insulation layer of the wire is damaged in an instantaneous extreme environment, it is not resistant to moisture, and it is easy to hydrolyze. The purpose of the present invention is to provide a high dielectric Constant high temperature resistant wire

Method used

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  • High-dielectric constant high-temperature resistant wire and preparation method for same
  • High-dielectric constant high-temperature resistant wire and preparation method for same
  • High-dielectric constant high-temperature resistant wire and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1) Multi-strand monofilament cores are twisted in the same direction to make conductive cores. The monofilament wire core used is a nickel-plated round copper wire, the volume percentage of the nickel layer is 12%, and the specification of the stranded conductive wire core is 127×0.300 (mm);

[0054] 2) Prepare a high temperature resistant insulating layer outside the stranded conductive wire core, the steps include mica tape wrapping, quartz fiber wrapping and quartz fiber weaving.

[0055] The mica tape used is made of mica paper and glass cloth bonded by high temperature resistant modified silicone resin paint. The mica tape used is 0.075×8mm and the coverage rate is 67%.

[0056] A high-speed wire wrapping machine is used to wrap the quartz fiber. The parameters of the quartz fiber package are: 4 strands, 210 strands per strand, and a covering rate of 5%;

[0057] Quartz fiber weaving is performed using a high-speed weaving machine. Quartz fiber weaving parameter...

Embodiment 2

[0078] 1) Multi-strand monofilament cores are twisted in the same direction to make conductive cores. The monofilament wire core used is a nickel-plated round copper wire, the volume percentage of the nickel layer is 9%, and the specification of the stranded conductive wire core is 127×0.300 (mm);

[0079] 2) Prepare a high temperature resistant insulating layer outside the stranded conductive wire core, the steps include mica tape wrapping, quartz fiber wrapping and quartz fiber weaving.

[0080] The mica tape used is made of mica paper and glass cloth bonded by high temperature resistant modified silicone resin paint. The mica tape used is 0.075×8mm and the coverage rate is 67%.

[0081] A high-speed wire wrapping machine is used to wrap the quartz fiber. The parameters of the quartz fiber package are: 4 strands, 250 strands per strand, and a covering rate of 5%;

[0082] Quartz fiber weaving is performed using a high-speed weaving machine. Quartz fiber weaving parameters...

Embodiment 3

[0099] 1) Multi-strand monofilament cores are twisted in the same direction to make conductive cores. The monofilament core used is a nickel-plated round copper wire, the volume percentage of the nickel layer is 15%, and the specification of the stranded conductive core is 127×0.300 (mm);

[0100] 2) Prepare a high temperature resistant insulating layer outside the stranded conductive wire core, the steps include mica tape wrapping, quartz fiber wrapping and quartz fiber weaving.

[0101] The mica tape used is made of mica paper and glass cloth bonded by high temperature resistant modified silicone resin paint. The mica tape used is 0.075×8mm and the coverage rate is 67%.

[0102] A high-speed wire wrapping machine is used to wrap the quartz fiber. The parameters of the quartz fiber package are: 4 strands, the number of each strand is 160, and the covering rate is 5%;

[0103] Quartz fiber weaving is performed using a high-speed weaving machine. Quartz fiber weaving paramet...

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Abstract

The invention relates to the field of aeronautic and astronautic wires, in particular to a high-dielectric constant high-temperature resistant wire and a preparation method for the same. The high-dielectric constant high-temperature resistant wire structurally comprises a wire core, a mica tape wrapped layer, a quartz fiber filament wrapped layer, a quartz fiber braided layer and a damp-proof wear layer from inside to outside, and also comprises high-temperature resistant insulating paint, wherein the high-temperature resistant insulating paint is filled in the quartz fiber filament wrapped layer and the quartz fiber braided layer; the wire core is a stranded conductive wire core; and the damp-proof wear layer is a polytetrafluoroethylene (PTFE) thin film wrapped and sintered layer. The high-dielectric constant high-temperature resistant wire can work at high temperature, and has a high dielectric constant and capacitance of more than 300PF; and when the high-dielectric constant high-temperature resistant wire bears fire blast at 2,000 DEG C within 3 seconds, cracks in an insulating layer of the wire and reduction in the electrical performance are avoided.

Description

technical field [0001] The invention relates to the field of wires for aerospace, in particular to a wire with high dielectric constant and high temperature resistance and a preparation method thereof. Background technique [0002] Although the development of aerospace is closely related to military applications, what is more important is the tremendous progress that mankind has made in this field, which has had a major impact on many sectors of the national economy and many aspects of social life, and has changed the face of the world . The development of aviation has greatly changed the structure of transportation. Airplanes have provided people with a fast, convenient, economical, safe and comfortable means of transportation. International flights have replaced ocean liners and become the main tool for people's intercontinental travel. Exchanges between countries; domestic flights have replaced railway passenger transport in some countries, speeding up the development of...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/29H01B7/28H01B7/18H01B13/00
Inventor 李福索晋玄王海宾郭荣荣诸冉冉凌春华
Owner SHANGHAI ELECTRIC CABLE RES INST
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