A high-strength smoke-suppressing and high-temperature-resistant cable sheathing material

Abstract

The invention discloses a high-strength smoke-inhibiting high-temperature-resisting cable sheath material. The high-strength smoke-inhibiting high-temperature-resisting cable sheath material comprises following raw materials in parts by weight: 20-35 parts of chlorosulfonated polyethylene, 20-35 parts of EVA (Ethylene Vinyl Acetate) resin, 10-15 parts of modified methyl vinyl silicone rubber, 1.5-3 parts of stearic acid, 2-5 parts of calcium carbonate, 0.3-0.8 parts of 2,4,6-tritertiary butyl phenol, 0.8-1.3 parts of an accelerant TMTD (Tetramethylthiuram Disulfide), 1.5-2.5 parts of an accelerant DM (2,2'-dibenzothiazoledisulfide), 3-13 parts of microencapsulated covered red phosphorus, 15-20 parts of cetyl trimethyl ammonium bromide modified montmorillonoid, 20-25 parts of magnesium hydroxide, 15-20 parts of aluminum hydroxide, 3.5-8.3 parts of tricresyl phosphate, 35-45 parts of high-wear-resisting carbon black and 25-32 parts of modified kaolin; the content of vinyl acetate in the EVA resin is 18-23%. The high-strength smoke-inhibiting high-temperature-resisting cable sheath material has good smoke-inhibiting and inflaming retarding effects and excellent environmental stress cracking resistance.

Description

technical field [0001] The invention relates to the technical field of cable sheathing, in particular to a high-strength smoke-suppressing and high-temperature-resistant cable sheathing material. Background technique [0002] In order to reduce the occurrence of fires, people have conducted various discussions on the flame retardant and smoke suppression of cables. The burning of cables produced in my country every year releases a large amount of toxic and harmful gases such as hydrogen chloride, carbon monoxide, carbon dioxide, various aromatic hydrocarbons, and chlorine-containing compounds. When the fire occurs, the smoke can fill the entire building in a short time, which brings great difficulties to the evacuation of personnel and fire rescue work. Statistics show that 85% of the deaths in the fire are caused by suffocation, which makes people's lives Property has suffered serious losses, and the quality requirements for cable sheathing materials are increasing day by day...

AI Technical Summary

Problems solved by technology

[0002] In order to reduce the occurrence of fires, people have conducted various discussions on the flame retardant and smoke suppression of cables. The burning of cables produced in my country every year releases a large amount of toxic and harmful gases such as hydrogen chloride, carbon monoxide, carbon dioxide, various aromatic hydrocarbons, and chlorine-containing compounds. When the fire occurs, the smoke can fill the entire building in a short time, which brings great difficulties to the evacuation of personnel and fire rescue work. Statistics show that 85% of the deaths in the fire are caused by suffocation, which makes people's lives Property has suffered serious losses, and the quality requirements for cable sheathing materials are increasing day by day. In addition, the performance of cable sheathing is affected by the environment or external force for a long time or declines significantly, resulting in deformation and damage of cables, and gradually losing their use functions. In order to slow down Due to the above effects, it is currently a technical problem to be solved to ensure that the cable does not suffer from strength damage during the service period, to improve the creep resistance of the cable in high and low temperature environments, and to increase the service life of the cable sheath material.