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Cable and its preparation method and equipment

A cable and equipment technology, applied in the field of cable and its manufacturing, can solve the problems of non-sealed bonding of polytetrafluoroethylene raw tape and polyimide film, and the inability to realize the seamlessness of the two films, so as to eliminate delamination Sintered tape layer, enhanced resistance to arc propagation, and damage reduction effects

Active Publication Date: 2017-09-19
LINGQI ENVIRONMENTAL PROTECTION EQUIP FACTORY SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a cable to solve the problem that the polytetrafluoroethylene raw material tape and the polyimide film in the cable are not sealed and bonded, and the seamlessness between the two films cannot be realized.

Method used

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  • Cable and its preparation method and equipment
  • Cable and its preparation method and equipment
  • Cable and its preparation method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Taking nickel-plated copper conductor wire as an example, the preparation process of the cable is as follows:

[0116] (1) Wrapping step: the nickel-plated copper conductor is the conductor core, and the third layer (polytetrafluoroethylene microporous film, the second layer (polyimide film) (double-sided coated with fusible PTFE Ethylene emulsion) and the first layer (polytetrafluoroethylene microporous film) to wrap the conductor core, so as to obtain the first-stage cable, wherein the third layer (polytetrafluoroethylene microporous film) has a thickness of 0.010mm and a width of 20mm , the wrapping angle is 35°, the wrapping rate is 50%; the thickness of the second layer (polyimide film) is 0.035mm, the width is 5mm, the wrapping angle is 40°, the wrapping direction is left, and the lapping rate is 50%. The cover rate is 50%; the specific gravity of the meltable polytetrafluoroethylene emulsion is 2.12g / cm3, the elongation at break is 300%, the tensile strength is 3...

Embodiment 2

[0121] Taking nickel-plated copper alloy conductor wire as an example, its preparation process is as follows:

[0122] (1) Wrapping step: the nickel-plated copper alloy conductor is the conductor core, and the third layer (polytetrafluoroethylene microporous film, the second layer (polyimide film) (double-sided coated with fusible polytetrafluoroethylene film) Fluoroethylene emulsion) and the first layer (polytetrafluoroethylene microporous film) wrap the conductor core to obtain the first-stage cable, in which the third layer (polytetrafluoroethylene film) has a thickness of 0.055mm and a width of 75mm. The wrapping angle is 45°, the covering rate is 40%; the thickness of the second layer (polyimide film) is 0.045mm, the width is 25mm, the wrapping angle is 50°, the winding direction is left, and the covering rate is 35%; Melting polytetrafluoroethylene emulsion has a specific gravity of 2.17g / cm3, an elongation at break of 300%, a tensile strength of 30N / mm2, a static elasti...

Embodiment 3

[0127] Taking tinned copper alloy conductor wire as an example, its preparation process is as follows:

[0128] (1) Wrapping step: the tinned copper alloy conductor is the conductor core, and the third layer (polytetrafluoroethylene microporous film, the second layer (polyimide film) (double-sided coated with fusible polytetrafluoroethylene film) Fluoroethylene emulsion) and the first layer (polytetrafluoroethylene microporous film) wrap the conductor core to obtain the first-stage cable, in which the third layer (polytetrafluoroethylene film) has a thickness of 0.080mm and a width of 100mm. The wrapping angle is 70°, and the wrapping coverage rate is 65%; the thickness of the second layer (polyimide film) is 0.05mm, the width is 50mm, the wrapping angle is 50°, the wrapping direction is left, and the wrapping coverage rate is 70%; The specific gravity of the meltable polytetrafluoroethylene emulsion is 2.15g / cm3, the elongation at break is 300%, the tensile strength is 30N / mm...

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Abstract

The invention discloses a cable and its preparation method and equipment. The cable includes a plurality of conductor cores and an insulating layer. The insulating layer includes at least a first layer and a second layer. The first layer is located outside the second layer, and the first The layer is a polytetrafluoroethylene film, wherein the cable is seamlessly wrapped around the plurality of conductor cores by an insulating layer, and then formed by sintering, hot pressing and seamless processing. The preparation method includes a wrapping step, a sintering step, a hot pressing step and a seamless processing step. The equipment includes wrapping device, sintering device, hot pressing device and seamless processing device. The cable of the invention has the effect of complete sealing, avoiding various defects caused by incomplete sintering.

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to a cable and its manufacturing method and equipment. Background technique [0002] Aviation communication cables are a key component of the aircraft wiring system and have an important impact on the safety and reliability of the aircraft communication transmission system. Damage to the insulation layer of the wire will expose the copper conductor core, which will cause problems such as arcing, short circuit, electromagnetic radiation and interference, and cause the failure of the aircraft wiring system. With the improvement of the comprehensive performance of modern aircraft, the degree of electrification is getting higher and higher, the amount of communication cables is also greatly increased, and the performance requirements for wires and cables are becoming more and more stringent. [0003] At present, the wires used in aerospace mainly use copper-plated alloy core conductors....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B7/04H01B7/18H01B11/00H01B13/00H01B13/10H01B13/14
Inventor 茅惠东顾根林周强庞敏
Owner LINGQI ENVIRONMENTAL PROTECTION EQUIP FACTORY SHANGHAI
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