High-reliability data flexible cable used for building

Abstract

The invention discloses a high-reliability data flexible cable used for a building. The outer surfaces of four core wires are wrapped with a polyvinyl chloride layer. The outer surface of the polyvinyl chloride layer is wrapped with a thermoplastic polyurethane layer. The thermoplastic polyurethane layer is composed of 55-65 parts of low-density polyethylene of which the melt index is 1 g / 10 min-8 g / 10 min, 38-42 parts of high-density polyethylene of which the melt index is 1 g / 10 min-8 g / 10 min, 26-32 parts of diethyl phthalate, 18-25 parts of tri-octyl tri-meta-benzoate, 23-28 parts of calcium carbonate, 2-4 parts of calcium ricinoleate, 2-5 parts of bis-(3, 5-tert-butyl-4-hydroxyphenyl) sulfur ether, 1-5 parts of stearic acid and 0.5-1 part of polyethylene wax. The flame retardant property of material is improved, the oxygen index representing flame retardant property is quite high, and the char-forming effect is good in the combustion process of the material; a stable hollow composite char structure is formed and prevents secondary combustion and flame propagation of the material, and mechanical and physical properties of the indoor data cable are improved.

Description

technical field [0001] The invention relates to a communication flexible cable, in particular to a high-reliability data flexible cable for buildings. Background technique [0002] Existing flexible data cables are generally used for building wiring. Vinyl chloride) outer sheath, this product machine mainly has the following technical problems: (1) When it is required to improve multiple indicators such as insulation performance, weather resistance and flame retardant performance at the same time, it is difficult to take into account at the same time, which often leads to a decline in some of the indicators Or it is difficult to improve; (2) When the cable is torn apart by pulling force, the stress point will be concentrated, the cable is easily separated, and the cable core of the cable is easy to be damaged; (3) The thermal stability and radiation resistance are poor, Insulation performance, surface wear resistance and surface hardness also need to be improved. How to so...

AI Technical Summary

Problems solved by technology

[0002] Existing flexible data cables are generally used for building wiring. Vinyl chloride) outer sheath, this product machine mainly has the following technical problems: (1) When it is required to improve multiple indicators such as insulation performance, weather resistance and flame retardant performance at the same time, it is difficult to take into account at the same time, which often leads to a decline in some of the indicators Or it is difficult to improve; (2) When the cable is torn apart by pulling force, the stress point will be concentrated, the cable is easily separated, and the cable core of the cable is easy to be damaged; (3) The thermal stability and radiation resistance are poor, Insulation performance, surface wear resistance and surface hardness also need to be improved

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