Low smoke zero halogen flame resistant cable

Abstract

The invention provides a low smoke zero halogen flame resistant cable, which comprises a cable body, wherein the cable body comprises multiple strands of cable cores which are stranded together, a halogen-free flame retardant belt and a low smoke zero halogen flame retardant polyolefin protection layer, wherein each cable core comprises a conductor, at least one mica flame retardant coating and a low smoke zero halogen polyolefin insulation layer; each mica flame retardant coating coats the corresponding conductor; each low smoke zero halogen polyolefin insulation layer is extruded outside the corresponding mica flame retardant coating; the cable cores are coated in the halogen-free flame retardant belt; a gap between the cable cores and the halogen-free flame retardant belt is filled and extruded by ceramic halogen-free polyolefin; and the low smoke zero halogen flame retardant polyolefin protection layer is extruded outside the halogen-free flame retardant belt. The low smoke zero halogen flame resistant cable has the beneficial effects that when the cable is burned, the toxic gas cannot be generated, the burning time is longer, the longer escape time can be provided when a disaster occurs, and the flame retardant effect is good.

Description

technical field [0001] The invention relates to a low-smoke halogen-free fire-resistant cable. Background technique [0002] The application of environmentally friendly and fire-fighting power cables in the field of modern industrial and civil power cables is getting more and more attention. How to make the cables flame-retardant, less smoke, and not release halogen gas in a high-temperature environment at a lower cost is the current power A hot research topic in the cable industry. The commonly used cable materials, their insulating layers and sheaths have low temperature resistance, generally only reaching 70°C. Once burning occurs, a large amount of smoke and halogen gas are the main causes of suffocation. Contents of the invention [0003] The problem to be solved by the present invention is to provide a low-smoke, halogen-free fire-resistant cable specially used in places requiring higher fire-resistant grades, which overcomes the shortcomings of the prior art. [0...

AI Technical Summary

Problems solved by technology

However, the commonly used cable materials, their insulating layers and sheaths have low temperature resistance, generally only reaching 70°C. Once burning occurs, a large amount of smoke and halogen gas are the main causes of suffocation.

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