Novel B1 electric wire

Abstract

The invention discloses a novel B1 electric wire, and the wire comprises a conductor and a B1 insulating material wrapping the conductor; the B1 insulating material is subjected to irradiation crosslinking, so the material is changed into a three-dimensional network structure from a linear structure and is changed into a non-fusible structure from a fusible structure, so the novel B1 electric wire has better heat resistance. According to the novel B1 electric wire, the special low-smoke halogen-free flame-retardant polyolefin B1 insulating material is adopted for insulation and is subjected to irradiation crosslinking, excellent electrical insulation performance and mechanical performance can be achieved, the novel B1 electric wire further has excellent flame retardant performance, and no toxic or harmful substance is generated in the product combustion process; meanwhile, the extremely low smoke amount, heat release and corrosivity can obviously reduce the harm in electrical fire disasters.

Description

technical field [0001] The invention relates to the technical field of electric wires and cables, in particular to a novel B1 electric wire. Background technique [0002] At present, flame-retardant wire and cable products in the domestic market generally refer to GB / T 19666-2005 "General Rules for Flame-retardant and Fire-resistant Wire and Cable", GA306.1-2007 "Flame-retardant and Fire-resistant Cable Plastic Insulation Flame-retardant and Fire-resistant Cable Classification and Requirements Part 1 Flame Retardant Cable" and other general standards are implemented, which can meet the general requirements of most engineering sites that will not cause harm to personal safety. In some places where people are relatively dense, according to the latest version of DGJ 08-2048-2016 "Civil Building Electrical Fire Protection Design Regulations" and GB 50016-2018 "Building Design Fire Protection Code" requires super high-rise buildings and a class of high-rise buildings in civil bui...

AI Technical Summary

Problems solved by technology

The aluminum hydroxide or magnesium hydroxide added to this kind of material is an inorganic substance, the surface has not been modified, and the compatibility with the base material of the wire material is poor, and it is easy to seep out of the base material during long-term use, which affects the service life; secondly , the dispersion performance of these unmodified flame retardants in the polymer matrix is ​​not good, which affects the processing fluidity and the comprehensive performance of the wire material

[0005] Conventional cross-linked cloth wires can meet the technical requirements of JB / T10491-2004 "Rated Voltage 450 / 750V and Below Cross-linked Polyolefin Insulated Wires and Cables", have certain electrical and mechanical properties, and have better low smoke after burning performance, halogen-free performance, but this kind of wire may generate a lot of heat during combustion, produce a lot of smoke in a short time, and there are burning drips that are not conducive to fire rescue, and the flame retardancy and safety are not enough

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