High-flame-retardance fireproof cable made of inorganic materials

Abstract

The invention discloses a high-flame-retardance fireproof cable made of inorganic materials. The high-flame-retardance fireproof cable comprises a plurality of wire cables, a fire-resistant layer made of inorganic materials and a flame-retardant jacket. The fire-resistant layer made of the inorganic materials is extruded on the wire cables; the flame-retardant jacket is sleeved on the fire-resistant layer made of the inorganic materials; each wire cable consists of a copper conductor and a vitrified silicon rubber insulating layer extruded on the copper conductor; and a filling layer is filled in the fire-resistant layer made of the inorganic materials. The high-flame-retardance fireproof cable is characterized in that the fire-resistant layer made of the inorganic materials comprises, by weight, 85% of magnesium hydroxide, 6% of serpentine powder, 4% of magnesium calcium carbonate, 3% of sodium silicate and 2% of chlorinated paraffin which are squeezed to form the fire-resistant layer made of the inorganic materials. The insulating layer is made of vitrified silicon rubber, and because the insulating layer has high fire resistance and the vitrified silicon rubber is vitrified at a high temperature, the insulating performance of the cable is guaranteed during spontaneous combustion of the cable and external fire disasters. Besides, as the fire-resistant layer made of the inorganic materials is totally made of the inorganic materials by cold stirring and extruding, the materials cannot be combusted during the fire disasters, and flame-retardant and fireproofing effects can be achieved effectively.

Description

technical field [0001] The invention relates to the technical field of fireproof cables, in particular to a high flame-retardant fireproof cable made of inorganic materials. Background technique [0002] With the development of the polymer material industry, polymer synthetic materials are more and more widely used in the fields of construction, chemical industry, military and transportation, due to the flammability of polymer materials. Therefore, flame retardant technology has attracted global attention. With the enhancement of environmental protection awareness and the successive promulgation of flame retardant regulations in various countries, the flame retardant market has developed rapidly, especially mg ( Inorganic flame retardants such as oH)2 are more and more favored by users. [0003] Magnesium Hydroxide Mg(OH) 2 It is an inorganic flame retardant, which does not contain harmful substances in production, use and disposal, and can also neutralize acid and corrosi...

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Problems solved by technology

[0004] The above contains Mg(OH) 2 Flame retardants are all filler type. Now the heat resistance, oil resistance, flexibility, and performance strength requirements of cables are relatively high. From the perspective of fire resistance performance alone, although the fire-resistant cables produced with this composite material are mg(oH) 2 Flame retardants can achieve smoke suppression and low-smoke fire-resistant effects, which are far from meeting the technical requirements for fire prevention and safety in the true sense

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