Low-smoke zero-halogen micro-tube bundle pipe

Abstract

The invention discloses a low-smoke zero-halogen microtube bundle pipe, which comprises an outer sheath and at least two microtubes. The microtubes are arranged in the outer sheath; the outer sheath is made of low-smoke zero-halogen flame-retardant plastic; the inner wall of the outer sheath is provided with a solid lubrication silicon material layer; and the inner wall of each microtube is also provided with a solid lubrication silicon material layer. The low-smoke zero-halogen microtube bundle pipe can realize stable batch production of small-size micro-tube bundle pipes, the minimum outer diameter of which is 5 mm and the wall thickness of which is 0.75 mm; the outer sheath adopts polyolefin as a base material; and the base material is added by a halogen-free flame retardant and a smoke suppressor. The micro-tube bundle pipe product has no release of halogen acid gas, and releases extremely-small amount of toxic and corrosive gases and is extremely low in smoke density during combustion, and has the advantages of excellent flame retardant performance, high safety and being green and environmental protection. Meanwhile, the number of inner core microtubes and diameter can be customized according to different types of optical cables. With the development of fiber and optical cable technology, the micro-tube bundle pipe can ensure that an optical cable product adopting new technology can be adopted at any time; and the micro-tube bundle pipe is safe and reliable and simple to maintain.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a low-smoke halogen-free microtube bundle tube. Background technique [0002] With the development of optical fiber communication technology, an optical cable with a smaller structural size has been widely used in the construction of communication networks and has become the mainstream. For example, optical cables with smaller structural sizes are used in the construction of metropolitan area networks and local area networks. Along with this trend, a new type of communication pipe with smaller dimensions - microtube bundle tube, has also been gradually applied to provide protection for this kind of optical cable. [0003] The existing microtube bundle tubes are all made of ordinary high-density polyethylene. This material itself does not have flame retardant and fireproof performance. Flame retardant effect. It is usually necessary to add halogenated flame retardants to ...

AI Technical Summary

Problems solved by technology

At the same time, the conventional method of adding halogenated flame retardants to improve the flame retardant performance, due to the addition of various inorganic materials, makes the stretching of the materials in the molten state relatively small, and is only suitable for products with large specifications and wall thicknesses. Diameter greater than 20mm, wall thickness greater than 1.5mm

For small-sized pipes used in buildings, such as 5mm outer diameter and 0.75mm wall thickness, the production stability is poor and the production efficiency is not high

Cannot be mass-produced

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