Indoor halogen-free and flame-retardant communication optical cable sheathing compound and preparation method thereof

Abstract

The invention discloses an indoor halogen-free and flame-retardant communication optical cable sheathing compound and a preparation method thereof. The sheathing compound is prepared by the following raw materials in parts by weight: 52-74 parts of linear low density polyethylene, 27-43 parts of liquid crystal high-molecular polymer, 10-15 parts of neopentyl glycol dibenzoate, 18-26 parts of a reworked material, 1.5-2.5 parts of lithium aluminum di-n-butylamide, 2-4 parts of polyoxyethylene glyceryl ether trioleate, 16-24 parts of polyphenyl thioether, 3-5 parts of magnesium oleate, 2-4 parts of PPG-n castorate, 1-2 parts of phenylethyl resorcinol, 4-8 parts of melamine cyanurate, 5-10 parts of diethyl ethanephosphonate, 15-20 parts of colemanite powder, 10-15 parts of diethyl aluminium hypophosphite and 1-2 parts of Xylyl dibutylbenzofuranone. The sheathing compound has the characteristics of high flame retardancy, no halogen, low smoke, high mechanical strength, good flexibleness and excellent heat resistance and ageing performance, has a wide application range, is suitable for underground constructions, large public buildings, high-rise buildings and other indoor places demanding much on smoke density, acidity and flame retardancy, and has great economic benefits and social benefits.

Description

technical field [0001] The invention relates to a sheath material for indoor halogen-free flame-retardant communication optical cables and a preparation method thereof, belonging to the field of sheath materials for optical cables. Background technique [0002] The communication optical cable is composed of a cable core and an outer sheath composed of several (core) optical fibers (generally from several cores to several thousand cores), and has a much larger transmission capacity; less attenuation; long transmission distance; small size; weight Lightweight; no electromagnetic interference; low cost, it is currently the most promising communication transmission medium, widely used in signal transmission in various departments such as telecommunications, electric power, and broadcasting, and will gradually become the main body of future communication networks. Due to the limitations of the laying or use environment, the communication optical cable needs to be protected by an ...

AI Technical Summary

Problems solved by technology

At present, the sheath materials used for indoor communication optical cables on the market are mostly added with halogen-containing flame retardants for flame retardancy, which causes the release of a large amount of toxic and harmful gases when the cables are burned, which not only pollutes the environment, but also causes great harm to the human body.

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