Low-smoke halogen-free polyolefin insulated and shielded cable and preparation method thereof

Abstract

The invention discloses a low-smoke halogen-free polyolefin insulated and shielded cable, which comprises a conductive core, an isolating guide layer, an insulating sheath layer, a shielding sheath layer and an outer protecting sleeve layer. A preparation method of the low-smoke halogen-free polyolefin insulated and shielded cable comprises a wire drawing procedure, a wire bundling procedure, a compound stranding procedure, an isolating guide layer process, an insulating sheath layer process, a shielding sheath layer process and an outer protecting sleeve layer process. By the low-smoke halogen-free polyolefin insulated and shielded cable and the preparation method thereof, the cable can have good anti-stretching and anti-bending properties, high temperature resistant and flame retardant properties and good insulating and shielding properties, can effectively shield the interference of external electromagnetism and the like, improves the transmission quality of the cable and is long in service lifetime and beneficial to popularization and application.

Description

【Technical field】 [0001] The invention relates to the technical field of cable manufacturing, in particular to the technical field of a low-smoke halogen-free polyolefin insulated and shielded 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 covering layers, total protective layer and outer sheath, and the cable may also have additional uninsulated conductors. Wire products used to transmit electric (magnetic) energy, information and realize electromagnetic energy conversion. At present, wires and cables are widely used in various fields, inv...

AI Technical Summary

Problems solved by technology

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 cables, and they are prone to problems, which brings various inconveniences to users; and people The environmental protection consciousness of the people is getting heavier and heavier, and the cables are required to be environmentally friendly and safe.

The cables commonly used at present have the disadvantages of large size, high temperature resistance, and toxic substances when burned. Especially for industrial cables, cables often encounter various extreme environments, such as fires, floods, earthquakes and other harsh environments. , which places high demands on the material of the cable

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