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High-grade flame-retardant fireproof optical cable

A high-grade flame-retardant and fire-resistant technology, which is applied in the field of high-grade flame-retardant and fire-resistant optical cables, can solve problems such as loss of transmission information, ordinary mica tapes cannot block heat transfer, and large changes in optical fiber attenuation. It achieves excellent heat insulation performance, novel structure, The effect of heat reduction

Active Publication Date: 2016-11-16
JIANGSU HENGTONG PHOTOELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used fire-resistant optical cables generally use ordinary mica tape and refractory materials. Ordinary mica tape cannot effectively block heat transfer. The heat will gradually penetrate into the optical fiber and other materials as time goes by. The optical fiber is easily heated and the attenuation of the optical fiber changes greatly. , making it difficult for optical cables to maintain the smoothness of optical fiber communication for a long time and lose the ability to transmit information, so it is no longer possible to unilaterally rely on ordinary low-smoke and halogen-free materials and ordinary mica to maintain fire resistance

Method used

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  • High-grade flame-retardant fireproof optical cable

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Embodiment

[0032] refer to figure 1 As shown, this embodiment discloses a high-grade flame-retardant and fire-resistant optical cable, which includes a layer-stranded cable core. The layer-stranded cable core includes a strengthening member 1 arranged in the center, and the outer periphery of the central strengthening member 1 is provided with several Sleeve 2 and / or filling rope with the same diameter, the above-mentioned sleeve 2 is sleeved with optical fiber, and the inside of the above-mentioned sleeve 2 is filled with fiber paste or water-blocking yarn, that is, the above-mentioned filled fiber paste 3 or water-blocking yarn is filled in the sleeve 2 and optical fiber The gap between the above-mentioned optical fibers depends on the type and quantity of the actual optical cable design, which is not limited here.

[0033] In this embodiment, the above-mentioned central reinforcement 1 is made of glass fiber reinforced plastic; the above-mentioned casing is a PBT casing, MPP casing or...

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Abstract

The invention discloses a high-grade flame-retardant fireproof optical cable. The high-grade flame-retardant fireproof optical cable comprises a layer stranded type cable core, the layer stranded type cable core is wrapped by a double-face synthetic mica tape layer, the double-face synthetic mica tape layer is wrapped by a steel plastic composite band layer, the steel plastic composite band layer is externally plastically extruded by a low-smoke halogen-free inner sheath, the low-smoke halogen-free inner sheath is externally provided with at least one armored layer, the armored layer is externally provided with a fireproof layer and a low-smoke halogen oversheath, the low-smoke halogen-free inner sheath and the low-smoke halogen-free oversheath are both prepared by low-smoke halogen-free ceramic polyolefin, and the low-smoke halogen-free ceramic polyolefin comprises 60-70% of matrix polyolefin and 30-40% of an auxiliary agent, wherein the auxiliary agent comprises a plasticizer, white carbon black, 3% of micro-encapsulated red phosphorus, siloxane, 15-28% of a gas-phase fire retardant and 5-7% of a special fire retardant. The ceramic polyolefin is a halogen-free high-oxygen index sheath material and is easily ceramic during high-temperature combustion to form a compact protection layer so as to obstruct flames and heat transfer and accordingly prevent fibers from high-temperature damage.

Description

technical field [0001] The invention relates to the field of communication optical cables, in particular to a high-grade flame-retardant and fire-resistant optical cable. Background technique [0002] In recent years, with the deepening implementation of the "Broadband China" strategy and the active promotion of the information strategy, the network has become a very important information transmission channel in my country. As we all know, optical fiber is the core component in the process of informatization. In order to make optical fiber widely used in various fields, improving the protection level of optical fiber has become an important goal of optical cable research and development. Therefore, the application of flame-retardant and fire-resistant optical cables is born. Ensure that the optical cable can continue to be used in the event of a fire, reducing property and personnel losses. How to give full play to the performance of various materials of the optical cable, ...

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 王瑞刘沛东张小山吴迪罗斌吴水荣薛梦池吴俊雄
Owner JIANGSU HENGTONG PHOTOELECTRIC
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