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Breaking-force-limiting overhead leading-in optical cable

A technology that introduces optical cables and breaking force, applied in the field of communication, can solve the problems of small overall size of optical cables, thick outer diameter of optical cables, and inconvenient construction, and achieve the effects of convenient and fast construction, reduced burning rate, and simple structure

Pending Publication Date: 2018-04-10
JIANGSU HENGTONG PHOTOELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a limited breaking force aerial lead-in optical cable. The optical cable has high mechanical properties and environmental performance, and the overall size of the optical cable is small. It can also solve the problem of the traditional optical cable having a thick outer diameter, heavy weight, and inconvenient construction. question

Method used

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  • Breaking-force-limiting overhead leading-in optical cable
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  • Breaking-force-limiting overhead leading-in optical cable

Examples

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Embodiment 1

[0027] An embodiment of a limited breaking force overhead drop cable of the present invention, such as figure 1 As shown, it includes a light unit 1, the outer periphery of the light unit 1 is covered with a water blocking belt 2, the outer periphery of the water blocking belt 2 is covered with a fire-resistant film 3, and the outer periphery of the fire-resistant film 3 is covered with a fire-resistant layer 4, The outer periphery of the refractory layer 4 is covered with a PE outer sheath 5 .

[0028] In this embodiment, the refractory layer is a porcelain-able polymer refractory layer.

[0029] FRP reinforcements 6 are also provided, and the FRP reinforcements 6 are arranged on both sides of the light unit 1 .

[0030] The optical unit 1 includes several optical unit tubes 101 , and several optical fibers 102 are arranged in the optical unit tubes 101 . Water-blocking yarns 103 are arranged between the light unit tubes 101 .

[0031] The outer diameter of the lead-in cab...

Embodiment 2

[0038]In this embodiment, the formula of the refractory film includes: 50 parts of epoxy resin, 35 parts of polyamide, 9.5 parts of nano-magnesium hydroxide, 0.5 parts of polysiloxane grafted carbon nanotubes, and 5 parts of organic montmorillonite; Among them, the particle size of nano-scale magnesium hydroxide is 0.1-1 μm, the length of polysiloxane-grafted carbon nanotubes is 2-20 μm; the mass fraction of montmorillonite in organic montmorillonite is 96%-98%, and the particle size It is 300-500 mesh, and the diameter-thickness ratio is 200-300.

[0039] The refractory film is prepared through the following steps: weigh the polysiloxane grafted carbon nanotubes of the formula, dissolve them in N-N dimethylformamide solution, stir for 30 minutes while ultrasonically dispersing, and obtain a uniform mixed solution , wherein the mass ratio of polysiloxane-grafted carbon nanotubes to N-N dimethylformamide solution is 1:100; then add nano-scale magnesium hydroxide to the mixed so...

Embodiment 3

[0042] In this embodiment, the formula of the refractory film includes: 57 parts of epoxy resin, 30 parts of polyamide, 8 parts of nano-sized magnesium hydroxide, 1 part of polysiloxane grafted carbon nanotubes, and 4 parts of organic montmorillonite; Among them, the particle size of nano-scale magnesium hydroxide is 0.1-1 μm, the length of polysiloxane-grafted carbon nanotubes is 2-20 μm; the mass fraction of montmorillonite in organic montmorillonite is 96%-98%, and the particle size It is 300-500 mesh, and the diameter-thickness ratio is 200-300.

[0043] The refractory film is prepared through the following steps: weigh the polysiloxane grafted carbon nanotubes of the formula, dissolve them in N-N dimethylformamide solution, stir for 50 minutes while ultrasonically dispersing, and obtain a uniform mixed solution , wherein the mass ratio of polysiloxane-grafted carbon nanotubes to N-N dimethylformamide solution is 1:100; then add nano-scale magnesium hydroxide to the mixed ...

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Abstract

The invention discloses a breaking-force-limiting overhead leading-in optical cable, and the optical cable comprises a light unit. The periphery of the light unit is covered with a water blocking tape, and the periphery of the water blocking tape is covered with a fire-resistant film. The periphery of the fire-resistant film is covered with a fireproof layer, and the periphery of the fireproof layer is covered with a PE outer sheath. The fire-resistant film comprises the following components by weight: 50-70 parts of epoxy resin, 30-50 parts of polyamide, 5-10 parts of nano-level magnesium hydroxide, 0.5-2 parts of polysiloxane grafted carbon nanotubes, and 3-5 parts of organic montmorillonite. The particle size of the nanometer magnesium hydroxide is 0.1-1 microns, and the length of silicone grafted carbon nanotubes is 2-20 microns. The mass fraction of smectite in organic montmorillonite is 96%-98%, the particle size is 300-500 meshes, and the ratio of diameter to thickness is 200-300. The optical cable has higher mechanical performances and environmental performances, and the overall size of the optical cable is small. The optical cable can also solve the problems that a conventional optical cable has a large outer diameter, is large in weight, and is not convenient for construction.

Description

technical field [0001] The invention relates to the field of communication, in particular to an aerial lead-in optical cable with limited breaking force. Background technique [0002] The limited breaking force aerial lead-in optical cable is a kind of optical cable that can meet the safety performance of the optical cable. The so-called limited breaking force means that the optical cable can be safely broken when it bears a specified range of tension and prevent damage to the surrounding environment. It is used in the production process of the optical cable UV-cured optical unit, high production efficiency, small optical unit size This optical cable can realize a fully dry water-blocking structure by using a new type of water-blocking material. [0003] Stranded overhead drop-in cables are generally composed of a cable core, a strength member, and a sheath, in which a central strength member is used for the cable core, and a plurality of loose tubes are arranged around the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4436Y02A30/00
Inventor 沈晨曦蒋北刘沛东王宇亮高峰林卫峰费华青王宇航
Owner JIANGSU HENGTONG PHOTOELECTRIC
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