一种B1级阻燃光缆

By optimizing the optical cable structure and adopting a multi-layer protective material design, the flame retardancy problem of the optical cable in the event of a fire has been solved, ensuring the continuity and safety of optical fiber communication and reducing fire losses.

CN224519017UActive Publication Date: 2026-07-17SHANGHAI KETER POLYMER MATERIAL +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI KETER POLYMER MATERIAL
Filing Date
2025-08-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing optical cables cannot effectively resist fire in densely populated areas during fires, leading to communication interruptions and property damage, and cannot meet the requirements for high flame retardancy.

Method used

By optimizing the structural design of the optical cable, including the combination of semi-dry cable core, flame-retardant layer and outer sheath, and using materials such as phosphated steel wire central reinforcement, polybutylene terephthalate loose tube, aluminum-plastic composite tape, ceramicized composite tape and flame-retardant braided layer, a multi-layer protective structure is formed to prevent the spread of flames and isolate oxygen.

Benefits of technology

It achieves B1-level flame retardant performance for optical cables in the event of a fire, ensuring the continuity of optical fiber communication and minimizing fire losses.

✦ Generated by Eureka AI based on patent content.

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Abstract

本申请涉及光缆技术领域,特别涉及一种B1级阻燃光缆。B1级阻燃光缆由内到外依次包括半干式缆芯、阻燃层和光缆外护套层;半干式缆芯由内到外依次包括中心加强件、松套管组件和阻水带,松套管组件包括多个沿中心加强件外周均匀分布的松套管,各松套管内设有多根光纤,光纤与松套管内壁之间填充纤膏;阻燃层由内到外依次包括铝塑复合带、隔氧层、陶瓷化复合带和阻燃复合编织层,铝塑复合带设于与阻水带接触的一侧;阻燃复合编织层设于与光缆外护套层接触的一侧。本申请通过对光缆的半干式缆芯、阻燃层、和光缆外护套层的结构优化设计,当发生火灾时,使整个光缆达到B1级阻燃性能,保障光纤在一定时间内的正常通信,最大程度的降低火灾造成的损失。
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