Environment-friendly waterproof low-smoke halogen-free flame-retardant cable

By combining an external dynamic impact fireproof mechanism with an internal interconnected buffer protection mechanism, the problem of flame spread in flame-retardant cables during a fire is solved, improving the fire resistance and service life of the cables, and enhancing structural strength and stability.

CN121528631BActive Publication Date: 2026-05-26JINLIAN CABLE & WIRE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JINLIAN CABLE & WIRE CO LTD
Filing Date
2025-12-12
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing flame-retardant cables cannot effectively prevent the spread of flames in a fire, resulting in reduced environmental adaptability and service life.

Method used

The cable employs an external dynamic impact fireproof mechanism and an internal interconnected buffer protection mechanism. The gas generated by the sodium bicarbonate pressing and the burst impact of the heat-resistant elastic silicone capsule, combined with the loose structure of the porous fire-resistant expansion strip, prevent the spread of flames. Furthermore, the combination design of the heat-insulating installation strip and the buffer strip improves the fire resistance and structural stability of the cable.

Benefits of technology

It effectively blocks the spread of flames, improves the fire resistance and service life of cables, and enhances the structural strength and stability of cables, ensuring that cables maintain stable operation in a fire.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses an environmentally friendly, waterproof, low-smoke, halogen-free flame-retardant cable, relating to the field of flame-retardant cable technology. The central conductor is covered by an inner insulation layer, which is then covered by a silicone protective layer. An inner shielding layer and a rubber protective outer layer are sequentially covered by the silicone protective layer. An outer waterproof isolation sleeve is then covered by the rubber protective outer layer. This invention utilizes the gas generated by the sodium bicarbonate pressing, combined with the explosive impact generated by the heat-resistant elastic silicone capsule, to quickly block the spread of flames along the outer side of the cable, thereby effectively improving the fire resistance of the flame-retardant cable. Furthermore, when the flame-retardant cable is exposed to flames for an extended period, the porous structure of the porous fire-resistant expansion strip guides and confines the carbon dioxide and water vapor generated by the sodium bicarbonate pressing, forming a flame-retardant fireproof isolation zone on the outside of the flame-retardant cable, further enhancing its fire resistance.
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