Halogen-free low-smoke oxygen-barrier flame-retardant cable

Abstract

The invention discloses a halogen-free low-smoke oxygen-barrier flame-retardant cable, which comprises cable cores, wherein each cable core is provided with a wire core conductor, a fire-resistant mica layer, an insulated layer, a wrapping shielding layer, and an inner sheath sequentially from inside to outside; a filling layer is arranged outside the cable core; a fire barrier layer is arranged outside the filling layer; an oxygen barrier layer is arranged outside the fire barrier layer; an outer sheath is arranged outside the oxygen barrier layer; the filling material of the filling layer is inorganic aluminum hydroxide colloid; and the oxygen barrier layer is a wrapping alkali-free glass fiber rope. According to the halogen-free low-smoke oxygen-barrier flame-retardant cable, as the fire-resistant mica layer, the insulated layer, the wrapping shielding layer and the inner sheath are arranged outside each wire core conductor, fire-resistant insulation shielding protection is carried out on the wire core conductor, and as the filling layer, the fire barrier layer, the oxygen barrier layer and the outer sheath are arranged outside the cable core, good oxygen-barrier and flame-retardant roles are played on the cable core, and the strength and the mechanical performance of the cable are enhanced; and due to filling of aluminum hydroxide, the thermal capacity and the conductive thermal resistance of the cable are reduced, the oxygen-barrier cable is hard to ignite and ablate, and emission of smoke and poisonous gas is reduced.

Description

technical field [0001] The invention belongs to the field of cables, in particular to a flame-retardant cable with a halogen-free low-smoke oxygen barrier layer. Background technique [0002] The application of low-voltage fire-resistant cables is becoming more and more extensive, but usually due to various reasons, the short-circuit breakdown of the cable during operation causes a fire, and the fire spreads along the cable line, which increases the danger of the fire. Most low-voltage fire-resistant cables in my country are made of flame-retardant polyvinyl chloride for insulation and sheathing. During the granulation process, heavy metal compounds such as lead salts must be added as stabilizers, and a large amount of halogen flame retardants such as chlorine and bromine must be used. When a fire breaks out during the use of the cable, it will produce a large amount of smoke, carbon monoxide, hydrogen chloride and other toxic gases when burning, which will seriously affect ...

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Problems solved by technology

Due to the low output and high manufacturing cost of this type of cable, it does not adapt to the growing market demand

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