Modified high-frame-retardant super-flexible fireproof cable and preparation process thereof

Abstract

The invention discloses a modified high-frame-retardant super-flexible fireproof cable. The cable employs a ceramic composite mineral for insulation and a stainless steel tape for linkage armor. The temperature resistance of the insulation, after ceramicization, reaches more than 2600 DEG C, and the temperature resistance of a stainless steel tape reaches more than 1500 DEG C. The fireproof grade of the cable is also higher than a mineral matter insulation fireproof cable; the bending performance is better than various fireproof cables, and the bending radius is about 10 times the diameter of the cable; the cable is composed of multiple insulation cores and a protective external layer, the protective outer layer wraps the outside of the multiple insulation cores, and an inner sheath is arranged between the insulation cores and the protective outer layer. The cable is characterized in that the multiple insulation cores are twisted to form a cable core, the periphery of the cable core is vertically wrapped by a ceramic waterproof composite tape, and the center position of the cable core is provided with a semi-sulfurization ceramic composite mineral matter filling strip.

Description

technical field [0001] The invention relates to the technical field of cable structures, in particular to a modified high-flame-retardant super-flexible fire-resistant cable, and also relates to a preparation process of the modified high-flame-retardant super-flexible fire-resistant cable. Background technique [0002] In recent years, after many fires in large-scale public entertainment venues, chemical industry, coal mines, and commercial buildings in China caused tragic losses of people's lives and property, people have a deeper understanding of fire protection and fire safety. With the rapid growth of urban population, the continuous increase of high-rise buildings, hotels, large supermarkets, hospitals, stations, and airports, the construction of subways and tunnel traffic, and the increase of large-scale public sports, entertainment venues, and public transportation facilities, fire prevention and fire prevention The importance of safety is highlighted. [0003] At pr...

AI Technical Summary

Problems solved by technology

Magnesia mineral insulated refractory insulated cables require special production and processing equipment, and the production equipment for producing magnesia mineral refractory insulated cables is complex in process, very expensive, and the capital investment is too large; in addition, the outer sheath of magnesia mineral insulated refractory insulated cables It is all copper, the cost is high, and it is limited to a certain extent in practical application; in addition, copper sheathed magnesium oxide mineral insulated refractory insulated cables have special requirements in the process of production, processing, transportation, line laying, installation and use. Requirements, such as the production and processing of magnesium oxide mineral insulated refractory insulated cables cannot be as convenient as polymer materials, the laying and installation are difficult, the cost of raw materials is high, it is difficult to popularize and use on a large scale, and it is especially difficult to promote in civil buildings, etc.

The fire-resistant cable with mica tape winding insulation requires multi-layer winding in the production process. Due to the limitation of process conditions, it is easy to cause defects at the lap joints. It is difficult to ensure the safety and smoothness of communication and power in case of fire

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