Low-smoke zero-halogen flame-retarding optical cable sheath material

A flame retardant sheath and optical cable technology, applied in cables, insulated cables, conductors, etc., can solve problems such as difficulty in fire extinguishing, thick black smoke, and damage to buildings

Inactive Publication Date: 2012-06-13
JIANGSU QIBAO PHOTOELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic fillers are added to polyvinyl chloride, and the flame-retardant fuel made of antioxidants has good flame-retardant properties, but when the flame-retardant PVC is burned, the free chlorine and moisture in the air will react to form highly corrosive HCI, which will also thick black smoke
Therefore, even the low-smoke and low-halogen flame-retardant PVC generates black smoke and corrosive HCI during combustion, which will bring difficulties in fire fighting and damage to buildings.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Preferred specific embodiments of the present invention are described below:

[0018] In this embodiment, the main raw materials of this low-smoke halogen-free optical cable flame-retardant sheath material are polyethylene (PE), flame retardant, coupling agent, softener, plastic brightener, lubricant, antioxidant, carbon black , the materials and proportions of each component are as follows:

[0019] The function of each component is described as follows:

[0020] (1) Base material: MDPE;

[0021] (2) Flame retardants: aluminum hydroxide and magnesium hydroxide;

[0022] Metal hydroxide (hydrated metal oxidizer) flame retardant mainly refers to aluminum hydroxide and magnesium hydroxide. Aluminum hydroxide, aluminum oxide trihydrate (ATH for short), is the main inorganic metal hydroxide flame retardant, accounting for more than 80% of the amount of inorganic flame retardants. After ATH is heated, the three crystal waters will be in three different rele...

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PUM

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Abstract

The invention relates to a low-smoke zero-halogen flame-retarding optical cable sheath material, which comprises main components proportioned as following: polyethylene (PE) 58-62%, fire retardant 32-36%, coupling agent 0.8-1.2%, softening agent 1.0-1.4%, plastic brightening agent 0.6-1.0%, lubricating agent 0.6-1.0%, antioxidant 0.8-1.2% and carbon black 1.0-1.4%. The sheath material does not produce thick black smoke and harmful substance hydrogen chloride (HCI).

Description

[0001] technical field [0002] The invention relates to a low-smoke halogen-free optical cable flame-retardant sheathing material. [0003] Background technique [0004] The optical cables used in certain environments are required to have flame retardant properties. For example, optical cables used in subways, tunnels, oil, coal mines, buildings, computer rooms, public buildings, etc. At this time, flame-retardant materials should be used to make cable sheaths, especially with the rapid development of fiber-to-the-home (FTTH), indoor optical cables, especially leather cables (access network butterfly cables), must use flame-retardant sheath materials . Flame-retardant sheath materials are usually divided into two categories, one is flame-retardant polyvinyl chloride (PVC) sheath materials, and the other is flame-retardant polyolefin (such as EVA, PE) sheath materials. Chlorine atoms (halogen atoms) in the polyvinyl chloride molecule have the advantage of lower flammabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/22C08K3/04H01B7/295
Inventor 崔七宝陈炳炎
Owner JIANGSU QIBAO PHOTOELECTRIC GRP
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