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Double-layer co-extrusion insulation irradiation crosslinking halogen-free low-smoke flame-retardant power cable with long service life

A double-layer co-extrusion, low-smoke and flame-retardant technology, which is applied in the direction of power cables, insulated cables, insulated conductors, etc., can solve the problem that the service life and flame retardancy cannot meet the requirements, the flame retardancy and smoke suppression of cables are not very good, short circuit Fire accidents and other problems, to achieve the effect of reducing heat release rate, increasing layer spacing, and good environmental protection

Active Publication Date: 2019-12-03
ANHUI CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the wiring method of wires and cables in the construction field has changed from open wires to hidden wires. It is difficult to replace them after aging. This requires the cables used to have a long service life. However, the existing domestic wires are due to factors such as materials, processes, and technologies. The actual service life is only about 20 years, which cannot meet the requirements of the building for 70 years. At the same time, the existing cables are not very good in flame retardancy and smoke suppression. During use, short-circuit fire accidents are prone to occur, and a large amount of toxic and corrosive gases are released at the same time. and thick smoke, causing "secondary disasters"; with the acceleration of urbanization and the rapid development of power transmission, people's requirements for wires and cables are getting higher and higher, and the service life and flame retardancy of existing cables can no longer be Meet the requirements, need to be modified

Method used

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  • Double-layer co-extrusion insulation irradiation crosslinking halogen-free low-smoke flame-retardant power cable with long service life

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Effect test

Embodiment 1

[0016] The present invention proposes a long-life double-layer co-extruded insulation radiation cross-linked halogen-free low-smoke flame-retardant power cable, which includes a conductor, a refractory layer wrapped outside the conductor, a double-layer co-extruded insulating layer wrapped outside the refractory layer and The outer sheath wrapped on the outside of the double-layer co-extruded insulation layer; wherein, the outer sheath is prepared from EPDM composite material; the raw materials of the EPDM composite material include by weight: three 80 parts of ethylene propylene rubber, 20 parts of silicone rubber, 18 parts of white carbon black, 8 parts of bentonite, 15 parts of talcum powder, 3 parts of zinc oxide, 2 parts of stearic acid, 1 part of vulcanizing agent, 20 parts of ammonium polyphosphate, hydrogen 7 parts of alumina, 15 parts of microencapsulated red phosphorus, 8 parts of melamine pyrophosphate, 5 parts of pentaerythritol, 0.9 parts of accelerator, and 3 part...

Embodiment 2

[0018] The present invention proposes a long-life double-layer co-extruded insulation radiation cross-linked halogen-free low-smoke flame-retardant power cable, which includes a conductor, a refractory layer wrapped outside the conductor, a double-layer co-extruded insulating layer wrapped outside the refractory layer and The outer sheath wrapped on the outside of the double-layer co-extruded insulation layer; wherein, the outer sheath is prepared from EPDM composite material; the raw materials of the EPDM composite material include by weight: three 70 parts of ethylene propylene rubber, 30 parts of silicone rubber, 10 parts of white carbon black, 15 parts of bentonite, 8 parts of talcum powder, 5 parts of zinc oxide, 1 part of stearic acid, 2 parts of vulcanizing agent, 8 parts of ammonium polyphosphate, hydrogen 15 parts of alumina, 6 parts of microencapsulated red phosphorus, 9 parts of melamine pyrophosphate, 4 parts of pentaerythritol, 0.5 parts of accelerator, and 3.5 par...

Embodiment 3

[0020] The present invention proposes a long-life double-layer co-extruded insulation radiation cross-linked halogen-free low-smoke flame-retardant power cable, which includes a conductor, a refractory layer wrapped outside the conductor, a double-layer co-extruded insulating layer wrapped outside the refractory layer and The outer sheath wrapped on the outside of the double-layer co-extruded insulation layer; wherein, the outer sheath is prepared from EPDM composite material; the raw materials of the EPDM composite material include by weight: three 65 parts of ethylene propylene rubber, 35 parts of silicone rubber, 17 parts of white carbon black, 9 parts of bentonite, 13 parts of talcum powder, 3.7 parts of zinc oxide, 1.8 parts of stearic acid, 0.7 parts of dicumyl peroxide, and 0.7 parts of sulfur , 18 parts of ammonium polyphosphate, 9 parts of aluminum hydroxide, 13 parts of microencapsulated red phosphorus, 14 parts of melamine pyrophosphate, 2 parts of pentaerythritol, 0...

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Abstract

The invention discloses a double-layer co-extrusion insulation irradiation crosslinking halogen-free low-smoke flame-retardant power cable with a long service life. The power cable comprises a conductor, a fireproof layer wrapping the conductor, a double-layer co-extrusion insulation layer wrapping the fireproof layer and an outer protection layer wrapping the double-layer co-extrusion insulationlayer. The outer protection layer is prepared from an ethylene propylene diene monomer composite material; the ethylene propylene diene monomer composite material is prepared from the following raw materials: ethylene propylene diene monomer, silicone rubber, white carbon black, bentonite, talcum powder, zinc oxide, stearic acid, a vulcanizing agent, ammonium polyphosphate, aluminum hydroxide, microencapsulated red phosphorus, melamine pyrophosphate, pentaerythritol, an accelerant and an anti-aging agent. The double-layer co-extrusion insulation irradiation crosslinking halogen-free low-smokeflame-retardant power cable with a long service life provided by the invention is good in flame retardance and smoke suppression, excellent in heat resistance and aging resistance and long in servicelife.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a long-life double-layer co-extrusion insulation irradiation cross-linked halogen-free low-smoke flame-retardant power cable. Background technique [0002] Power cables are cables used to transmit and distribute electrical energy and have been widely used in the construction field. At present, the wiring method of wires and cables in the construction field has changed from open wires to hidden wires. It is difficult to replace them after aging. This requires the cables used to have a long service life. However, the existing domestic wires are due to factors such as materials, processes, and technologies. The actual service life is only about 20 years, which cannot meet the requirements of the building for 70 years. At the same time, the existing cables are not very good in flame retardancy and smoke suppression. During use, short-circuit fire accidents are prone to occur, and a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/00H01B7/02H01B7/18H01B7/28H01B7/29H01B7/295C08L23/16C08L83/04C08K13/06C08K9/10C08K3/02C08K3/36C08K3/34
CPCC08K2003/026C08L23/16C08L2201/02C08L2201/22C08L2203/202H01B7/0216H01B7/0275H01B7/18H01B7/28H01B7/29H01B7/292H01B7/295H01B9/00C08L83/04C08K13/06C08K9/10C08K3/02C08K3/36C08K3/34
Inventor 徐晓丽夏候东周俊宰学龙韩俊宝朱元忠陈安鹏陶恒莹
Owner ANHUI CABLE
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