Aerospace fire resisting cable and production technology thereof

Abstract

The invention discloses an aerospace fire resisting cable and the production technology of the aerospace fire resisting cable, and belongs to the technical field of cables. The aerospace fire resisting cable comprises a cable core and a protection layer arranged on the cable core, and is characterized in that the cable core is formed in the mode that a silver-clad copper conductor or a nickel-clad copper conductor is wrapped with an insulation composite band in a wound mode, the cross-linking type ETFE protection layer wraps the cable core in an extruded mode, and the insulation composite band is formed in the mode that ceramic vulcanizing silicone rubber raw rubber is evenly bonded among polytetrafluoroethene bands and continuous extrusion, coarse rolling and fine rolling are carried out. According to the novel aerospace fire resisting cable, the ceramic fire resisting silicone rubber band wrapping layer with two faces coated with hot melting sealing fluoroplastic serves as the insulating layer and the fire resisting layer of the cable, the ETFE layer wraps the ceramic fire resisting silicone rubber band wrapping layer in the extruded mode, irradiation cross-linking is carried out on the ETFE layer, and the ETFE layer serves as the protection layer. When a fire disaster occurs, a rigid ceramic protection layer is formed by the composite band wrapping layer, therefore, the flame isolation and fire resisting functions are achieved, the short-time transmission function of the cable can be ensured, and the reliable fire rescue response of an aircraft is achieved.

Description

technical field [0001] The invention relates to a fire-resistant cable and a production process thereof, in particular to a fire-resistant cable for aerospace and a production process thereof, and belongs to the technical field of cables. Background technique [0002] The development of science and technology has promoted the development of wire and cable, and the development of wire and cable has promoted and guaranteed the development of science and technology, which goes round and round without end. Special cable products represented by aerospace cables have contributed to the leap of my country's cable industry from civil to military, from ground to air. The aerospace industry has been looking for a cable product that can guarantee high reliability, light weight, small size, softness and low toxicity even in harsh environments. With the development of space technology, especially with the deepening of research on the outer space environment , Gradually discover the defi...

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Problems solved by technology

[0004] According to different needs, the interlayer of the fuselage of the whole aircraft is covered with various cables (wires). These aircraft wires are basically insulated and sheathed with fluorine-containing polymers except for some cables in the engine area. Although these cables It has certain flame retardant and low smoke characteristics, but it does not guarantee the reliable integrity of the cable under fire conditions

As the most high-end transportation equipment, due to the existence of various unforeseen factors, the ignition point of the aircraft may exist in the control room, landing gear, cabin door, etc. Once the aircraft fire occurs, the fire safety of these parts is directly related to the emergency landing of the aircraft, Emergency response such as safe evacuation of personnel, but ordinary aerospace cables cannot guarantee the above-mentioned safety functions due to insufficient structure and performance, which will eventually lead to aircraft crashes and fatal accidents

[0005] On the other hand, ordinary fire-resistant cables mostly use strips with certain insulation properties under flame conditions as fire-resistant elements. This type of structural cable needs to be wound in multiple layers during production. The back hair is brittle and easy to fall off, and the reliability of fire resistance is poor, so it is difficult to ensure the safety and smoothness of communication and power lines in case of fire

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