Ethylene-propylene insulated rubber-sheathed flexible cable and preparation method thereof

Abstract

The invention discloses an ethylene-propylene insulating rubber sleeve flexible cable, which comprises a center conductor, a conductor shielding layer, an ethylene-propylene rubber insulating layer, an insulating shielding layer, a metal shielding layer and an outer sheath layer, wherein the outer side of the center conductor is sequentially coated with the conductor shielding layer, the ethylene-propylene rubber insulating layer, the insulating shielding layer, the metal shielding layer and the outer sheath layer; and the center conductor is a core bundle body formed by a plurality of flexible copper conductors. The invention further provides a preparation method of the ethylene-propylene insulating rubber sleeve flexible cable. The preparation method comprises a wire drawing procedure, a wire stranding procedure, a three-layer co-extrusion process, a metal shielding layer process and an outer sheath layer process. The flexible cable has the effects of good flexibility, water resistance, rolling resistance, stretching resistance, high crimp resistance and long service life; and meanwhile, according to the preparation method of the flexible cable, educts and oxides which are good in quality and are not shielded by the conductor are extruded by adopting the three-layer co-extrusion process, inner shields are not easy to scratch and excellent insulating property and mechanical property of the cable are ensured.

Description

technical field [0001] The invention relates to the technical field of cable manufacturing, in particular to an ethylene-propylene insulated rubber-sheathed flexible cable and a preparation method thereof. Background technique [0002] Wires and cables are used to transmit electric (magnetic) energy, information and wire products that realize the conversion of electromagnetic energy. In a broad sense, wires and cables are also referred to as cables for short. In a narrow sense, cables refer to insulated cables, which can be defined as: a collection composed of the following parts ; One or more insulated wire cores, and their respective possible coatings, overall protective layers and outer sheaths, cables may also have additional uninsulated conductors for the transmission of electrical (magnetic) energy, information and Wire products that realize electromagnetic energy conversion. [0003] At present, wires and cables are widely used in various fields, involving people's d...

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Problems solved by technology

[0003] At present, wires and cables are widely used in various fields, involving people's daily electricity consumption and industrial production. It is necessary to have various resistance properties, but the existing cables do not have various shielding layers and protective layers, resulting in poor anti-interference performance and short life of the cable, and it is prone to problems, which brings various inconveniences to users; and now Some cables have poor flexibility, poor salt spray resistance, poor tensile and crimp resistance, short life, and no resistance to rolling, which have greatly failed to meet the needs of the development of the times; especially for industrial cables, cables often encounter To various extreme environments, such as fire, flood, earthquake and other harsh environments, this requires high cable materials

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