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Flame-retardant low-release material layer-stranded optical cable and preparation method thereof

A technology of optical cable and flame-retardant tape, which is applied in the field of flame-retardant low-emission layer twisted optical cable and its preparation, to achieve the effects of improving resistance strength, improving bending performance, and excellent tensile strength

Active Publication Date: 2021-09-17
JIANGSU TRIGIANT OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing problems, the present invention provides a flame-retardant low-emission layer stranded optical cable

Method used

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  • Flame-retardant low-release material layer-stranded optical cable and preparation method thereof
  • Flame-retardant low-release material layer-stranded optical cable and preparation method thereof
  • Flame-retardant low-release material layer-stranded optical cable and preparation method thereof

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as figure 1 As shown, the present invention is a flame-retardant low-emission layer stranded optical cable, which includes a strengthening structure located in the center of the cable. The strengthening structure is composed of a strengthening element 4 and a flame-retardant cushion 5 extruded outside the strengthening element. ; The outer edge of the strengthening structure surrounds a plurality of optical fiber units, the optical fiber unit includes a loose tube 3, and a plurality of optical fibers 1 are arranged in the loose tube, and the loose tube The filler 2 in the tube is filled with the optical fiber; the plurality of optical fiber units are wrapped with a metal composite tape 8, and the gap between the plurality of optical fiber units and the metal composite tape is filled with a cable core filler 6 and an open cable 12; ...

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Abstract

The invention provides a flame-retardant low-release material layer-stranded optical cable and a preparation method thereof. The flame-retardant low-release material layer-stranded optical cable comprises a reinforcing structural member located in the center of the cable, a plurality of optical fiber units surround the reinforcing structural member along the edge of the reinforcing structural member, and the plurality of optical fiber units are wrapped by a metal composite belt. Gaps between the plurality of optical fiber units and the metal composite belt are filled with a cable core filler and a cable opening rope; the metal composite belt is wrapped by a flame-retardant belt, a foaming cushion layer is extruded outside the flame-retardant belt, and a flame-retardant sheath is extruded outside the foaming cushion layer. Nitrogen is filled into the sheath layer and the foaming cushion layer, so that an isolation layer is formed, flame retardance is carried out through a suffocation method, a magnesium-aluminum flame-retardant film with flame-retardant PE as a base material is attached to the surface of the flame-retardant belt developed in a matched mode, a water vapor layer can be formed after combustion is carried out, and therefore the flame-retardant performance is improved, flame-retardant materials are replaced with flame-retardant gas and moisture to reduce emission of released substances after combustion, the lateral pressure resistance and bending resistance of the product are improved, and the applicability of the product is improved.

Description

technical field [0001] The invention relates to the field of communication cables, in particular to a flame-retardant low-emission layer stranded optical cable and a preparation method thereof. Background technique [0002] With the development of 5G networks and the wide application of intelligent manufacturing, the application scenarios of optical cables have gradually expanded from wide-area forests, hills, lakes and oceans to cities, communities, buildings, and even households. new requirements. [0003] With the introduction of flame-retardant properties, various types of flame-retardant optical cables have also appeared in the public's field of vision, but there are methods with complex structures, multi-layer wrapping and filling with flame-retardant substances. However, this structure not only increases the cost, but also releases more substances after burning, and the bending performance cannot be effectively guaranteed, and the weight of the optical cable will inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/4436G02B6/443G02B6/4486
Inventor 潘家乐胡玥莫敏晖吴兵马亮
Owner JIANGSU TRIGIANT OPTOELECTRONICS TECH
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