Highly flame-retardant and weather-resistant cable

Abstract

The invention discloses a highly flame-retardant and weather-resistant cable, comprising a cable core and a protective layer disposed outside the cable core, wherein the protective layer comprises aninsulating layer, an air layer and a flame-retardant layer which are successively disposed from the inside to the outside; the insulating layer is a mixed layer consisting of epoxy resin and thermoplastic phenolic resin; the air layer is provided with a plurality of groups of elastic blocks distributed in a circular shape along the longitudinal direction of a wire core; the two ends of each elastic block are fixedly connected to the insulating layer and the flame-retardant layer respectively; the flame-retardant layer is a rubber layer where polyvinyl chloride and styrene-butadiene rubber aremixed; the flame-retardant layer is further provided with a surface layer outside. The highly flame-retardant and weather-resistant cable is reasonable in structure. The flame-retardant layer of the cable is made of polyvinyl chloride and styrene-butadiene rubber, can improve the oil resistance and flame retardancy of the cable. The insulating layer is formed by mixing the epoxy resin with thermoplastic phenolic resin, can prevent the internal electrical property from causing oxidation of the protective layer of the cable, thereby achieving a good insulating effect.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a high flame-retardant and weather-resistant cable. Background technique [0002] With the development of the economy, the places where cables need to be used have become diversified, and there are more stringent and diverse requirements for the performance indicators of cables, such as insulation, tensile strength, operating temperature, flame retardancy and other indicators. It is an urgent need for economic and social development to continuously improve the performance of cables. Traditional sheath materials often have problems such as poor flame retardancy and poor oil resistance. When the flame retardancy of the cable is poor, the cable is prone to burning, generating open flames, causing the wires inside the cable to be exposed, and causing electrical short circuits. Contents of the invention [0003] The purpose of the present invention is to provide a high flame-retarda...

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Problems solved by technology

[0002] With the development of the economy, the places where cables need to be used have become diversified, and there are more stringent and diverse requirements for the performance indicators of cables, such as insulation, tensile strength, operating temperature, flame retardancy and other indicators. It is an urgent need for economic and social developm

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