Multi-core indoor optical cable having flame-retardant characteristic

Abstract

The invention discloses a multi-core indoor optical cable with flame-retardant properties, which comprises an outer insulating layer and an outer sheath layer, an outer shielding layer is arranged on the outer side of the outer insulating layer, and a polytetrafluoroethylene layer is arranged on the outer side of the outer shielding layer. There is a glass fiber layer on the outside of the polytetrafluoroethylene layer, a PVC material layer on the outside of the glass fiber layer, and an outer sheath layer on the outside of the PVC material layer. The outer sheath layer includes a halogen-free polyethylene layer, ceramic Silicone rubber layer and high flame-retardant low-halogen-free polyethylene layer. The structure of the invention is simple and reasonable, which effectively improves the anti-corrosion performance, tensile performance and heat insulation performance of the optical cable, thereby greatly improving the service life of the optical cable. At the same time, through the setting of the outer shielding layer and the inner shielding layer, the anti-interference ability of the optical cable to external signals is improved, and the independence of signal transmission between each optical cable core in the optical cable is also achieved, thereby further ensuring the signal transmission quality in the optical cable. It also avoids the problem of the generation of toxic gas caused by the burning or aging of optical cables.

Description

technical field [0001] The invention relates to an optical cable, in particular to a multi-core indoor optical cable with flame-retardant properties. Background technique [0002] As an important carrier of power transmission, optical cables are widely used in all walks of life. However, in some high-temperature and highly corrosive environments, the outer sheath of optical cables is prone to aging and damage. At present, optical cables have insufficient corrosion resistance, which affects the service life of optical cables. Disadvantages. In addition, there is a problem of signal interference between different optical cable cores in the existing optical cables, resulting in poor signal transmission quality of the optical cables. Since most of the existing optical cable sheaths contain halogen elements, it will be generated when the optical cable is aging or burning. Toxic gas, thereby polluting the environment. Contents of the invention [0003] The purpose of the presen...

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Problems solved by technology

[0002] As an important carrier of power transmission, optical cables are widely used in all walks of life. However, in some high-temperature and highly corrosive environments, the outer sheath of optical cables is prone to aging and damage. At present, optical cables have insufficient corrosion resistance, which affects the service life of optical cables. Disadvantages. In addition, there is a problem of signal interference between different optical cable cores in the existing optical cables, resulting in poor signal transmission quality of the optical cables. Since most of the existing optical cable sheaths contain halogen elements, it will be generated when the optical cable is aging or burning. Toxic gas, thereby polluting the environment

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