Low-smoke, low-halogen, low-toxicity and high flame-retardant rubber-sheathed flexible cable for coal mines

Abstract

The invention discloses a rubber jacketed flexible cable with low smoke, low halogen, low toxicity and high flame retardant performance for a coal mine. The rubber jacketed flexible cable comprises three power wire core conductors, wherein an ethylene propylene rubber insulating layer coats the outer surface of each power wire core conductor; an inner protective jacket layer coats the outer surfaces of the three power wire core conductors; an outer protective jacket layer coats the outer surfaces of the inner protective jacket layer; each of the protective jacket layer and the outer protective jacket layer consists of the following components in parts by weight: 100 parts of chloroprene rubber, 5 parts of zinc oxide, 8 parts of vulcanizing agent Na-220, 2 parts of 4,4-diaminodiphenyl ether, 50 parts of magnesium hydroxide, 1.2 parts of dioctyl phthalate, 10 parts of carbon black, 20 parts of calcined clay, 15 parts of calcium carbonate, 50 parts of aluminium hydroxide and 7 parts of magnesium oxide. According to the rubber jacketed flexible cable disclosed by the invention, service performances can be kept stable under the severe environment conditions, the service life is prolonged and the reliability is improved; while the flame retardant performance is improved, the rubber jacketed flexible cable has the advantages of excellent acid resistance, low smoke, no halogen, low toxicity, oil resistance and other medium corrosion resistances.

Description

technical field [0001] The invention relates to a low-smoke, low-halogen, low-toxicity and high flame-retardant rubber-sheathed flexible cable for coal mines, and belongs to the field of coal mine rubber-sheathed flexible cables. Background technique [0002] The product is mobile laying under the mine, and is often used in harsh environmental conditions, such as: the cable is subjected to excessive bending, stretching, torsion, mechanical external force impact and other harsh use environments for a long time, the performance declines relatively quickly, and the service life relatively short. [0003] Underground coal mining sites are mostly in very harsh environments, usually with high gas and methane gas concentrations, flammable and corrosive (direct contact with strong acids, mineral oil and other chemicals) environments require cables to have good flame retardancy performance (when the cable and the surrounding environment are on fire, it can prevent the flame from spr...

AI Technical Summary

Problems solved by technology

[0002] The product is mobile laying under the mine, and is often used in harsh environmental conditions, such as: the cable is subjected to excessive bending, stretching, torsion, mechanical external force impact and other harsh use environments for a long time, the performance declines relatively quickly, and the service life relatively short

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