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B2-grade flame-retardant cable as well as preparation method and application thereof

A flame-retardant cable and cable technology, applied in the direction of cable/conductor manufacturing, conductor/cable insulation, insulated cables, etc.

Pending Publication Date: 2021-11-05
JIANGSU HENGTONG POWER CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Current B 2 Class B cables cannot have both excellent flame retardancy and mechanical properties. Therefore, it is necessary to develop a B cable with excellent flame retardancy and mechanical properties. 2 Class cables are critical

Method used

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  • B2-grade flame-retardant cable as well as preparation method and application thereof
  • B2-grade flame-retardant cable as well as preparation method and application thereof
  • B2-grade flame-retardant cable as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment provides a B 2 Class flame retardant cable, the structure diagram is as follows figure 1 As shown, the cable includes four cable cores, the cable cores are distributed in an array, and flame-retardant fillers 3 are arranged in the pores of the cable cores, and flame-retardant tapes 4, inner Lining 5, galvanized steel strip 6 and protective layer 7;

[0071] The cable core includes a conductor 1 and an insulating layer 2 covering the surface of the conductor;

[0072] The raw materials for the preparation of the protective layer are composed of the following components in parts by weight: 20 parts of polyethylene, 30 parts of ethylene vinyl acetate copolymer, 45 parts of polyolefin elastomer, 8 parts of compatibilizer, 20 parts of reinforcing agent, 20 parts of zinc borate, 60 parts of composite flame retardant, 4 parts of antioxidant, 6 parts of lubricant;

[0073] The above-mentioned raw materials are specifically:

[0074] Polyethylene was purchase...

Embodiment 2

[0087] This embodiment provides a B 2 Class flame retardant cable, the cable includes four cable cores, the cable cores are distributed in an array, and flame retardant fillers are arranged in the pores of the cable cores, and the outer parts of the four cable cores are sequentially provided with flame retardant tapes, inner Lining, galvanized steel strip and protective layer;

[0088] The cable core includes a conductor and an insulating layer covering the surface of the conductor;

[0089] The preparation raw materials of the protective layer are composed of the following components in parts by weight: 10 parts of polyethylene, 10 parts of ethylene vinyl acetate copolymer, 30 parts of polyolefin elastomer, 5 parts of compatibilizer, 15 parts of reinforcing agent, 15 parts of zinc borate, 50 parts of composite flame retardant, 2 parts of antioxidant, 9 parts of lubricant;

[0090] The above-mentioned raw materials are specifically:

[0091] Polyethylene was purchased from ...

Embodiment 3

[0104] This embodiment provides a B 2 Class flame retardant cable, the cable includes four cable cores, the cable cores are distributed in an array, and flame retardant fillers are arranged in the pores of the cable cores, and the outer parts of the four cable cores are sequentially provided with flame retardant tapes, inner Lining, galvanized steel strip and protective layer;

[0105] The cable core includes a conductor and an insulating layer covering the surface of the conductor;

[0106] The raw materials for the preparation of the protective layer are composed of the following components in parts by weight: 30 parts of polyethylene, 45 parts of ethylene vinyl acetate copolymer, 55 parts of polyolefin elastomer, 10 parts of compatibilizer, 25 parts of reinforcing agent, 25 parts of zinc borate, 70 parts of composite flame retardant, 6 parts of antioxidant, 3 parts of lubricant;

[0107] The above-mentioned raw materials are specifically:

[0108] Polyethylene was purchase...

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Abstract

The invention relates to a B2-grade flame-retardant cable and a preparation method and application thereof. The B2-grade flame-retardant cable comprises at least two cable cores, wherein the cable cores are distributed in an array mode, and a lining layer and a protection layer are sequentially arranged outside the at least two cable cores; the cable core comprises a conductor and an insulating layer wrapping a surface of the conductor; a protective layer is prepared from the following components in parts by weight, 10 to 30 parts of polyethylene, 10 to 45 parts of ethylene-vinyl acetate copolymer, 30 to 55 parts of polyolefin elastomer, 50 to 70 parts of composite flame retardant and 1 to 50 parts of additive; the composite flame retardant comprises a combination of magnesium hydroxide, red phosphorus and a nitrogen-phosphorus flame retardant. The B2-grade flame-retardant cable disclosed by the invention has the B2-grade flame-retardant characteristic on the basis of meeting basic mechanical properties.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a B 2 Class flame retardant cable and its preparation method and application. Background technique [0002] Existing conventional power cables only consider the bundled flame-retardant characteristics of the cables, and do not consider factors such as heat release, smoke release, smoke toxicity, and burning droplets that are harmful to the outside world when the cables burn under fire conditions. [0003] CN112940388A discloses a kind of B2 grade low-smoke halogen-free polyolefin cable material and its preparation method, and its disclosed B 2 The raw materials of high-grade low-smoke halogen-free polyolefin cable materials include the following components: 35-50 parts of ethylene-butyl acrylate copolymer, 25-45 parts of ethylene-vinyl acetate copolymer, 10-25 parts of ultra-low density polyethylene, 5-10 parts of compatibilizer, 3-8 parts of lubricant, 0.5-2 parts of anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/18H01B7/22H01B13/06H01B13/22H01B13/24
CPCH01B7/295H01B7/1875H01B7/225H01B7/1895H01B13/06H01B13/22H01B13/24H01B13/221
Inventor 张宇郑建平成丽军于阳刘鑫桂裕聪韩淑杰刘海峰舒剑锋
Owner JIANGSU HENGTONG POWER CABLE
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