An aging-resistant flame-retardant cable and its processing technology

Abstract

The invention provides an aging-resistant and flame-retardant cable and a processing technology thereof, which have excellent aging resistance and flame retardancy, and excellent mechanical properties. In the present invention, a plurality of wires are twisted into bundles firstly, and wrapping layers and insulating layers are sequentially wrapped on the outside to obtain a wire core, and then multiple groups of wire cores are arranged in bundles to form a cable core, and finally the isolation layer and the insulation layer are sequentially wrapped outside the cable core. The sheath layer, that is, the cable. The sheath layer is mainly made of methyl vinyl silicone rubber, EPDM rubber, and thermoplastic polyester elastomer to ensure the basic mechanical properties and aging resistance of the product. Magnesium hydroxide is coated on the surface of ammonium polyphosphate-aluminum hydroxide-zinc borate compound, and then the resulting product is mixed with ethyl naphthol, hexacyclite powder, silicon carbide fiber, and then pentaerythritol triallyl ether, 3-ammonia Propyltrimethoxysilane modification treatment obtains an organically modified filler, which can be well integrated with methyl vinyl, etc., to avoid affecting the mechanical properties of the product.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to an aging-resistant and flame-retardant cable and a processing technology. Background technique [0002] A cable is a wire made of one or more mutually insulated conductors and an outer insulating layer that transmits power or information from one place to another. A rope-like cable that is usually twisted by several or groups of wires (at least two in each group), each group of wires is insulated from each other, and is often twisted around a center, and the entire outer surface is covered with a high degree of insulation the covering layer. They are composed of single-strand or multi-strand wires and soft copper conductors, which are used to connect circuits and electrical appliances. [0003] Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transm...

AI Technical Summary

Problems solved by technology

[0006] Patent CN106751362B discloses a high-temperature-resistant halogen-free flame-retardant thermoplastic elastomer cable material, which is based on thermoplastic dynamically vulcanized elastomer, homopolypropylene, styrene-based elastomer, intumescent flame retardant, rubber oil, lubricant, anti-corrosion Oxygen agent, light stabilizer, etc. are made of raw materials. Relying on the synergistic cooperation between different components of intumescent flame retardants, the flame retardant performance is acceptable, but the aging resistance is not good, and it is still difficult to meet the current high requirements for cables. standard requirement

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