Ccoal-winning machine low-smoke low-halogen screening rubber cover flexible cable

Abstract

The invention relates to a low-smoke and low-halogen shielded rubber-sheathed flexible cable for a coal mining machine. A low-smoke and low-halogen shielded rubber-sheathed flexible cable for coal mining machines, including a rubber sheath made of chloroprene polymer as the main material; zinc oxide or magnesium oxide, 2246 parts of anti-aging agent, protective agent, hard Fatty acid, paraffin wax, chlorinated paraffin wax, HZR-2 flame retardant, white carbon black, sunfast yellow, silane. The cable of the present invention is greatly reduced by burning rate (only about 20% of the original mining cable), and the amount of smoke and the amount of HCL gas released by the burning of the outer sheath rubber of itself are very low (about 10 %), which is only about 20% of the amount of smoke released by the combustion of the original flame-retardant mine cable. Release 10% of the volume of HCL gas. The concentration of smog HCL gas in the entire environmental space of the fire is even lower. From this point of view, it is a reliable guarantee to improve the safety and reliability of cables used in underground coal mines, reduce the degree of fire hazards, and prevent accidents caused by cables.

Description

technical field [0001] The invention relates to a low-smoke and low-halogen shielded rubber-sheathed flexible cable, in particular to a low-smoke and low-halogen shielded rubber-sheathed flexible cable for coal mining machines. Background technique [0002] Flame-retardant cables that meet the experimental requirements of IEC332-3-1982 "Test method for vertical combustion type of bundled cables" release a large amount of smoke and toxic gases in fire practice. According to a large number of statistics, these smokes cause fire casualties. The number of people accounts for about 80% of the casualty rate of the entire fire, and the released hydrogen chloride will corrode buildings and machinery and equipment. People call it the "secondary disaster" of the fire, which has attracted great attention. For example, in the 80s of the last century, during the Battle of the British and Armagh Islands, more than 300 officers and soldiers of the British warship were shot and all of them ...

AI Technical Summary

Problems solved by technology

[0040] The purpose of the present invention is to provide a low-smoke and low-halogen shielded rubber-sheathed flexible cable for coal mining machines, so as to solve the current problems of generating a large amount of smoke and toxic gases when the cable is burned.