Cable and production method thereof

Abstract

The invention discloses a cable and a production method thereof. The cable comprises wire units, a shielding layer (3) and a sheath (4), the multiple wire units are stranded mutually to form a cable core, the shielding layer is wound around the outer wall of the cable core, and the sheath is arranged on the shielding layer in a sleeving mode; each wire unit comprises a conductor (1) and an insulating layer (2), the insulating layer is an ethylene-tetrafluoroethylene copolymer layer, the shielding layer comprises a plurality of first silver-coated copper wires wound around the outer wall of the cable core, and the sheath is a sleeve formed by weaving meta-position aramid fiber yarn. The cable can work in an environment with irradiation of multiple rays and ultraviolet rays, and the stability of signal transmission is high.

Description

technical field [0001] The invention relates to a cable with strong anti-radiation and anti-interference ability. Background technique [0002] In addition to meeting the electrical performance requirements, the wires and cables in the aerospace field must also meet the requirements of high temperature resistance, small size, light weight, flame retardancy, high strength, chemical resistance, and the extremely complex and harsh conditions of various rays and ultraviolet radiation in the aerospace field. The cable can maintain its unique flexibility and high electric strength in the environment. [0003] Existing radiation-proof cables use cross-linked ethylene-tetrafluoroethylene copolymer materials as insulation and sheaths. This material can meet the requirements of radiation-proof high temperature, volume, weight, electrical properties and flame retardancy, but has poor flexibility and bending The radius is limited; if non-polar low-density polyethylene is used for insul...

AI Technical Summary

Problems solved by technology

[0003] Existing radiation-proof cables use cross-linked ethylene-tetrafluoroethylene copolymer materials as insulation and sheaths. This material can meet the requirements of radiation-proof high temperature, volume, weight, electrical properties and flame retardancy, but has poor flexibility and bending The radius is limited; if non-polar low-density polyethylene is used for insulation, and linear low-density light-resistant and heat-resistant polyethylene is used for the sheath, although radiation protection, electrical properties, weight and volume can meet the requirements, but high temperature, flame retardancy, strength and flexibility Not ideal; if cross-linked ethylene-tetrafluoroethylene copolymer material is used for insulation, the sheath is made of non-metallic polyester or nylon filaments for mutual covering and weaving. Although the insulation can meet the requirements of radiation resistance, high strength and flame retardancy, However, the flexibility is poor. Although the sheath is soft, its strength is completely lost after X-ray irradiation, and it has no protective effect on the cable; the processing method of cross-covering braided shielding with metal materials has a strong ability to resist external electromagnetic wave interference. , but the softness is poor, the weight and volume are large, and it cannot fully meet the requirements of special environments.

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