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Anti-bird pecking cable and producing method thereof

An anti-bird pecking and optical cable technology, applied in the field of cables, can solve the problems of difficulty in effectively resisting bird intrusion and low moisture permeability coefficient.

Inactive Publication Date: 2015-05-13
重庆成瑞光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, there is an additional layer of steel strip coated with anti-corrosion materials, and a thicker layer of high molecular polyethylene with a small moisture permeability coefficient is added on the outermost layer, so that the life of the cable is more than doubled; and in the electric field strength When it is higher, the shielding performance is nearly double that of the original cable; in the above-mentioned patents, the outer layer uses a high-density or high-molecular polyolefin sheath, which is a conventional material in the prior art. Facts have proved that it is extremely difficult to effectively resist The role of bird infestation

Method used

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  • Anti-bird pecking cable and producing method thereof
  • Anti-bird pecking cable and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] please see figure 1 , anti-bird pecking optical cable, which includes four loose tubes 2 distributed outside the strength member 3, a protective layer 4 outside the loose tube, an inner sheath 5 outside the protective layer, and located between the inner sheath The outer outer sheath 7 contains six optical fibers 1 in each loose tube, and is characterized in that there is an anti-peck layer 6 between the inner sheath and the outer sheath, and the anti-peck layer is made of the following raw materials in parts by weight Composition: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10-80 μm, length / diameter ratio 5-10 ultrafine steel fibers, glass fibers with a length of 0.05-0.2mm and a diameter of 0.03-0.3mm, and silica optical fibers with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 40-60 parts; EVA Hot melt adhesive: 5-10 parts; antioxidant for cable she...

Embodiment 2

[0062] please see figure 2 , anti-bird pecking optical cable, which includes four loose tubes 2 distributed outside the reinforcement 3 and a large filling rope 21, a protective layer 4 located outside the loose tube and the large filled rope, located outside the protective layer The inner sheath 5, the outer sheath 7 outside the inner sheath, each loose tube contains at least one optical fiber 1, which is characterized in that there is an anti-peck layer 6 between the inner sheath and the outer sheath, The anti-peck layer is composed of the following raw materials in parts by weight: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; epoxy resin with brand 617 or brand 677: 10-20 parts parts; ultra-fine steel fibers with a diameter of 10-80 μm and a length / diameter ratio of 5-10; glass fibers with a length of 0.05-0.2 mm and a diameter of 0.03-0.3 mm; and a diameter of 6.5-260 μm. mm silica optical fiber: 40-60 parts; EVA hot-...

Embodiment 3

[0073] please see image 3 , anti-bird pecking optical cable, which includes four loose tubes 2 distributed outside the reinforcement 3, small filling ropes 22 located in the outer gaps of adjacent loose tubes, outside the loose tubes and small filling ropes The protective layer 4, the inner sheath 5 outside the protective layer, the outer sheath 7 outside the inner sheath, each loose tube contains sixteen optical fibers 1, and the optical fibers are located in the optical fiber ribbon , the optical fiber ribbon is located in the loose tube, characterized in that there is an anti-pecking layer 6 between the inner sheath and the outer sheath, and the anti-pecking layer is composed of the following raw materials in parts by weight: medium density polyethylene or low density polyethylene Ethylene or high-density polyethylene: 50-80 parts; epoxy resin with grade 617 or grade 677: 10-20 parts; ultra-fine steel fibers with a diameter of 10-80 μm and a length / diameter ratio of 5-10 a...

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Abstract

The invention belongs to the technical field of cables, in particular to an anti-bird pecking cable which includes a plurality of loose tubes distributed outside a reinforcer, a protective layer positioned outside the loose tubes, an inner protective layer positioned on the outer side of the protective layer and an outer sheath positioned on the outer side of the inner protective layer, wherein at least one optical fiber is contained in each loose tube. The cable is characterized in that an anti-bird pecking layer is arranged between the inner protective layer and the outer sheath. The anti-bird pecking layer is composed of the following raw materials: mediate density polyethylene, low density polyethylene or high density polyethylene, epoxy resin, ultra-fine steel fibers, glass fibers, silica fibers, EVA hot melt glue, an antioxidant, aluminum hydroxide, paraffin wax and carbon black master batch. The invention also discloses a method for producing the cable. The cable has the main benefits of being easy to produce, good in anti-bird pecking effect, and high in production speed, qualified rate of finished products, pressure resistance and impact resistance.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a bird-pecking-proof optical cable and a manufacturing method thereof. Background technique [0002] In order to adapt to the survival of the environment, most of the birds that grow near the forest area have sharp cockroaches, which can damage cables, communication cable sheaths and insulation layers. In electric cables and communication optical cables, in order to facilitate identification, the insulating layer and loose tubes usually have multiple colors. After the sheath is pecked, the insulating layers and loose tubes of various colors look like colorful insects, and birds often eat them by mistake. Pecking the insulated wire core, optical fiber, or even the copper conductor, causing power / communication failure. Rain and snow enter the cable through the broken sheath, and over time, cause unexplained communication failures. In many forest areas in China, such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44B29C47/02
CPCG02B6/4432G02B6/4486
Inventor 沈群华
Owner 重庆成瑞光电科技有限公司
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