Light high-conductivity arc tracking-resistant and irradiation-resistant cable for aerospace and manufacturing process thereof

Abstract

The invention relates to a light high-conductivity arc tracking-resistant and irradiation-resistant cable for the aerospace and a manufacturing process thereof, belonging to the technical field of cables. The cable comprises a conductor, and an inner insulating layer and an outer insulating layer which are sequentially arranged outside the conductor, wherein the conductor is formed by tightly pressing and twisting a plurality of high-conductivity silver-free copper alloys; and the inner insulating layer is formed by wrapping a modified polysiloxane-polyimide composite film, and the outer insulating layer is formed by extrusion molding of a modified X-ETFE. The light high-conductivity arc tracking-resistant and irradiation-resistant cable for the aerospace prepared in the invention can be suitable for working in harsh environments such as aerospace vehicles and the like, has excellent electrical property, mechanical property, high and low temperature resistance, mechanical property, irradiation resistance, atomic oxygen resistance, vacuum degassing property and the like, and can be used for a long time within the temperature range of -100-+230 DEG C.

Description

technical field [0001] The invention relates to a light-duty, high-conductivity, series arc-resistant and radiation-resistant cable for aerospace and a manufacturing process thereof, belonging to the technical field of cables. Background technique [0002] With the in-depth study of the space environment, higher reliability requirements are put forward for aerospace wiring and wiring systems, specifically manifested in weight, vacuum outgassing, resistance to atomic oxygen, resistance to series arcs, resistance to ultraviolet rays, and high-energy radiation. Resistance, as well as its flame retardancy and mechanical properties have put forward higher requirements. In the history of aerospace, there are many failure accidents caused by cables. The National Aeronautics and Space Administration (NASA) explicitly prohibits the use of pure polyimide or purely other aromatic polymers and purely fluoroplastic-insulated wires and cables. For spacecraft such as satellites, the prim...

AI Technical Summary

Problems solved by technology

On the one hand, the volatilization of substances is a kind of damage. On the other hand, what is even more unacceptable is that volatile substances will settle and condense when they are cold, which will pollute electrical equipment, detract from the optical surface of optical prisms and the optical sensitivity of mirrors, and make satellites Can't work normally, serious even corrosion

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