Cross-linked polyethylene insulating halogen-free low-smoke flame-retardant fire-resisting cable

Abstract

The invention relates to the field of cables, in particular to a cross-linked polyethylene insulating halogen-free low-smoke flame-retardant fire-resisting cable. The cross-linked polyethylene insulating halogen-free low-smoke flame-retardant fire-resisting cable comprises a plurality of cable cores, wherein each cable core comprises a conductor, each conductor is extruded with a cross-linked polyethylene insulating layer, each cross-linked polyethylene insulating layer is wrapped with a flexible metal-plastic mixed layer, the flexible metal-plastic mixed layers are extruded with a composite armor layer, the composite armor layer is extruded with a metal shielding layer, and the metal shielding layer is extruded with a halogen-free low-smoke flame-retardant layer; each flexible metal-plastic mixed layer comprises an aluminum metal sleeve and flame-retardant nitrile rubber arranged in the aluminum metal sleeve; and a flexible metal isolating layer for supporting and fixing the cable cores and filled with glass powder is twisted among the cable cores. The cross-linked polyethylene insulating halogen-free low-smoke flame-retardant fire-resisting cable ensures the internal stability ofthe cable, and can guarantee the use of the cable in a certain period of time in case of an accident; and the flexible metal-plastic mixed layers are extruded on the cable cores, so as to enhance thestrength and insulation degree of the cable.

Description

technical field [0001] The invention relates to the field of cables, in particular to a cross-linked polyethylene insulated, halogen-free, low-smoke, flame-retardant and fire-resistant cable. Background technique [0002] The cable conducts electricity and transmits electricity through multiple cable cores of metal materials. When the cable cores are twisted, the strength or fire resistance of the cable will not be high enough due to technical or external force reasons, which will affect the use of the cable and eventually lead to the early scrapping of the cable. The use cost of the cable is increased, so it is very important to have a certain strength to resist mechanical force. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a cross-linked polyethylene insulated halogen-free low-smoke flame-retardant and fire-resistant cable. [0004] A cross-linked polyethylene insulated halogen-free low-smoke flame-retardant fir...

AI Technical Summary

Problems solved by technology

[0002] The cable conducts electricity and transmits electricity through multiple cable cores of metal materials. When the cable cores are twisted, the strength or fire resistance of the cable will not be high enough due to technical or external force reasons, which will affect the use of the cable and eventually lead to the early scrapping of the cable. Increases the cost of using the cable, therefore, it is very important to have a certain strength to resist mechanical forces

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