A kind of flame retardant special-shaped cable and its flame retardant layer forming equipment

Abstract

The invention discloses a flame-retardant special-shaped cable and a molding equipment for the flame-retardant layer thereof, which has the characteristics of good flame retardancy and high molding quality. , the wire includes a wire core and an insulating layer wrapped on the outer wall of the wire core, the outer sheath is also provided with an inner sheath in a flat structure, the wires are arranged in the inner sheath in a horizontal and equidistant manner, and the inner sheath It is a double-layer composite structure, and a mica tape winding layer is arranged between the two inner sheaths, and a flame retardant layer is also arranged between the inner sheath and the outer sheath. The flame retardant coating and the flame retardant powder sprayed and attached to the outer wall of the flame retardant coating are applicable to the technical field of cables.

Description

technical field [0001] The invention belongs to the technical field of cables, and particularly relates to a flame-retardant special-shaped cable and a molding device for a flame-retardant layer thereof. Background technique [0002] Cables are generally used to transmit electrical energy, electrical signals, etc., and cables have become an indispensable part of information transmission in today's life. At present, when the cable is used, there are many harsh environments, and the cable is prone to damage in the harsh environment. Therefore, the cable in the harsh environment needs to be maintained frequently, and the cost is extremely high, especially in the high temperature environment, the cable High insulation, fire resistance and high temperature resistance are the most basic conditions for cables, and fire is also a common disaster. In the process of disaster, power protection settings rely on cables to transmit signals and electrical energy Let it work, therefore, th...

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Problems solved by technology

At present, when the cable is used, there are many harsh environments, and the cable is prone to damage in the harsh environment, so the cable in the harsh environment needs to be maintained frequently, and the cost is extremely high, especially in the high temperature environment, the cable Excellent insulation, fire resistance, and high temperature resistance are the most basic conditions for cables, and fire is also a common disaster at present, and in the process of disasters, power protection settings rely on cables to transmit signals and electric energy to a large extent. Let it work, therefore, the fire performance of the cable is very important for today's production and life

[0003] Existing flame-retardant cables have relatively simple flame-retardant methods. The flame-retardant methods are usually directly using flame-retardant rubber sleeves, or applying flame-retardant coatings, or spraying flame-retardant powder on the surface of the rubber layer. The method of forming a flame-retardant layer, but the existing coating method and spraying method do not have suitable proprietary equipment. The traditional equipment or methods such as spraying, dipping and spraying guns all have defects, which will affect the molding quality. Therefore it needs to be improved

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