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A high-strength electromagnetic shielding cable

An electromagnetic shielding and high-strength technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of communication signal information error and distortion, increase tensile and compressive performance, improve fire resistance and flame retardancy, and thickness can be adjusted control effect

Active Publication Date: 2021-06-04
JIANGSU HENGTONG WIRE & CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the safe operation of rail transit trains, how to ensure the safe and stable transmission of rail transit communication signals has always been an important task that the industry has paid close attention to for a long time. In the previous applications of similar products in the industry, there were some special sections with harsh electromagnetic field environments. In the case of bit errors and distortions, especially when the train enters or leaves the section, this unfavorable situation is more serious. In order to effectively improve the quality of information transmission, a high-strength, anti-strong electromagnetic interference cable is developed to eliminate Potential accident hazards have become an unavoidable and important issue

Method used

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  • A high-strength electromagnetic shielding cable
  • A high-strength electromagnetic shielding cable
  • A high-strength electromagnetic shielding cable

Examples

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Effect test

Embodiment 1

[0034] see figure 1 , this embodiment discloses a high-strength electromagnetic shielding cable, including a cable core and a refractory layer, an isolation layer, a shielding layer, and a flame-retardant sheath layer that are sequentially coated on the outside of the cable core; the cable core includes a The copper conductor is formed by twisting a plurality of copper wires. The fire-resistant layer is a fire-resistant tape, and the fire-resistant tape is ceramic fiber cloth wrapped around the outside of the wire core, with a thickness of 100-200 μm.

[0035] The isolation layer is a polyurethane / glass fiber / expandable graphite ternary composite foam layer with a thickness of 200-400 μm; the preparation method is as follows:

[0036] (1) Take by weighing two parts of coupling agent KH550 according to 2wt% and 5wt% of glass fiber and expandable graphite, and dissolve them in absolute ethanol respectively to obtain two parts of coupling agent solutions with a concentration of ...

Embodiment 2

[0042] see figure 2 , this embodiment discloses a high-strength electromagnetic shielding cable, including a cable core and a refractory layer, an isolation layer, a shielding layer, and a flame-retardant sheath layer that are sequentially coated on the outside of the cable core; the cable core includes 4 A copper conductor and a cross-shaped filling frame, wherein the copper conductor is formed by twisting a plurality of copper wires, and is separated and relatively fixed by the cross-shaped filling frame. The fire-resistant layer is a fire-resistant tape, and the fire-resistant tape is a ceramic polyimide tape wrapped around the outside of the cable core, with a thickness of 100-200 μm.

[0043] The isolation layer is a polyurethane / glass fiber / expandable graphite ternary composite foam layer with a thickness of 200-400 μm; the preparation method is as follows:

[0044] (1) Take by weighing two parts of coupling agent KH550 according to 2wt% and 5wt% of glass fiber and exp...

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Abstract

The invention discloses a high-strength electromagnetic shielding cable, which includes a cable core and a refractory layer, an isolation layer, a shielding layer and a flame-retardant sheath layer that are sequentially coated on the outside of the cable core; the cable core includes several copper conductors. The above-mentioned copper conductor is formed by twisting multiple copper wires; the fire-resistant layer is a fire-resistant tape wrapped around the outside of the cable core, and the isolation layer is polyurethane / glass fiber / expandable graphite ternary composite foam with a thickness of 200-400 μm The shielding layer includes a shielding inner layer and a shielding outer layer, the shielding inner layer is a PVDF / nickel powder composite coating, the shielding outer layer is an aramid fiber / carbon fiber composite braiding layer, and the surface of the aramid fiber and carbon fiber is coated with a metal shielding material; the resistance The combustion sheath is a low-smoke and halogen-free outer sheath. The high-strength electromagnetic shielding cable of the present invention has high tensile and compressive strength, and has strong electromagnetic shielding performance. The railway signal is transmitted stably.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a high-strength electromagnetic shielding cable. Background technique [0002] As an important means to realize train command and train operation management, rail transit communication signal cables have become indispensable key equipment to ensure train safety and improve transportation efficiency. In the safe operation of rail transit trains, how to ensure the safe and stable transmission of rail transit communication signals has always been an important task that the industry has paid close attention to for a long time. In the previous applications of similar products in the industry, there were some special sections with harsh electromagnetic field environments. In the case of bit errors and distortions, especially when the train enters or leaves the section, this unfavorable situation is more serious. In order to effectively improve the quality of information transmission, a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/08H01B7/17H01B7/29H01B7/295H01B7/18H01B7/28
CPCH01B5/08H01B7/17H01B7/18H01B7/28H01B7/29H01B7/295
Inventor 吴士杰宋志斌徐勤锋席娇娜张波
Owner JIANGSU HENGTONG WIRE & CABLE TECH
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