City square fire-retardant communication electric cable

A communication cable and square technology, applied in the field of flame retardant communication cables for urban squares, can solve problems such as damage, casualties, precision instruments, etc. Effect

Inactive Publication Date: 2016-02-10
ANHUI TIANXING OPTICAL FIBER COMM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because PVC cable materials contain harmful heavy metals such as lead, tin, and barium, and PVC will produce toxic and corrosive gases such as hydrogen chloride and violent smoke during the combustion process, it is easy to cause a large number of casualties and precision instruments in a fire. damage to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A flame-retardant communication cable for city squares proposed by the present invention includes a cable core, the cable core is composed of a copper conductor and a semiconductor nylon tape coated on the surface of the copper conductor, and the outside of the cable core is coated with cross-linked cables from inside to outside in sequence. Polyethylene shielding layer, flame-retardant polyvinyl chloride outer sheath; the raw materials of the flame-retardant PVC outer sheath include by weight: 15 parts of polyethylene, 40 parts of ethylene-vinyl acetate copolymer, and 40 parts of flame retardant parts, 23 parts of synergistic flame retardant, 6 parts of compatibilizer EVA-g-MA, 1.3 parts of heat stabilizer, 2 parts of carbon black, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl ) 0.9 part of propionic acid] pentaerythritol ester and 0.2 part of tris [2,4-di-tert-butylphenyl] phosphite; the following process is used to prepare: first polyethylene, ethylene-vinyl acetate c...

Embodiment 2

[0015] A flame-retardant communication cable for city squares proposed by the present invention includes a cable core, the cable core is composed of a copper conductor and a semiconductor nylon tape coated on the surface of the copper conductor, and the outside of the cable core is coated with cross-linked cables from inside to outside in sequence. Polyethylene shielding layer, flame-retardant polyvinyl chloride outer sheath; the raw materials of the flame-retardant PVC outer sheath include by weight: 35 parts of polyethylene, 20 parts of ethylene-vinyl acetate copolymer, and 52 parts of flame retardant 15 parts of synergistic flame retardant, 10 parts of compatibilizer EVA-g-MA, 1 part of heat stabilizer, 5 parts of carbon black, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl 0.6 part of propionic acid] pentaerythritol ester and 0.5 part of tris [2,4-di-tert-butylphenyl] phosphite; the following process is used to prepare: first polyethylene, ethylene-vinyl acetate copolymer, s...

Embodiment 3

[0017] A flame-retardant communication cable for city squares proposed by the present invention includes a cable core, the cable core is composed of a copper conductor and a semiconductor nylon tape coated on the surface of the copper conductor, and the outside of the cable core is coated with cross-linked cables from inside to outside in sequence. Polyethylene shielding layer, flame-retardant polyvinyl chloride outer sheath; the raw materials of the flame-retardant PVC outer sheath include by weight: 24 parts of polyethylene, 35 parts of ethylene-vinyl acetate copolymer, and 45 parts of flame retardant parts, 20 parts of synergistic flame retardant, 7 parts of compatibilizer EVA-g-MA, 1.2 parts of heat stabilizer, 3 parts of carbon black, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl ) 0.6 part of propionic acid] pentaerythritol ester and 0.4 part of tris [2,4-di-tert-butylphenyl] phosphite, wherein the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 15%, a...

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Abstract

The present invention discloses a city square fire-retardant communication electric cable, which comprises a cable core, wherein the cable core comprises a copper conductor and a semiconductor nylon belt cladded on the copper conductor surface, a cross-linked polyethylene shield layer and a flame-retardant polyvinyl chloride outer sheath are sequentially cladded from inside to outside outside the cable core, and the raw materials of the flame-retardant polyvinyl chloride outer sheath comprise, by weight, 15-35 parts of polyethylene, 20-40 parts of an ethylene-vinyl acetate copolymer, 40-52 parts of a flame retardant agent, 15-23 parts of a synergetic flame retardant agent, 6-10 parts of a compatibilizer EVA-g-MA, 1-1.3 parts of a thermal stabilizer, 2-5 parts of carbon black, 0.6-0.9 part of pentaerythritol tetrakis(beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate), and 0.2-0.5 part of tris[2,4-di-tert-butylphenyl]phosphite. The city square fire-retardant communication electric cable of the present invention does not contain harmful metals and halogenated hydrocarbons, and has characteristics of excellent flame retardant effect, good processability, and good heat resistance.

Description

technical field [0001] The invention relates to the technical field of communication cables, in particular to a flame-retardant communication cable for city squares. Background technique [0002] With the rapid development of my country's communication industry, the demand for communication cables as arteries and blood vessels for signal transmission is also increasing day by day. Among communication cables with various insulation forms, XLPE insulated communication cables are an emerging and booming new army. With the strengthening of people's awareness of environmental protection and the promulgation of environmental regulations, the halogen-free flame-retardant technology of polymer materials with halogen-free and low-smoke characteristics will gradually replace the halogen-free flame-retardant technology. For a long time, the amount of polyvinyl chloride (PVC) in wire and cable materials has accounted for nearly 80%. Because PVC cable materials contain harmful heavy me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L51/00C08K13/02C08K3/04C08K5/134C08K5/526B29C47/92H01B3/44H01B7/295H01B7/02B29C48/92
Inventor 胡必林蔡飞李健刘丽胡程胡豪杰李星徐静林
Owner ANHUI TIANXING OPTICAL FIBER COMM EQUIP
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