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Stable-structure flame-retarding power cable

A power cable and structurally stable technology, applied in the field of structurally stable flame-retardant power cables, can solve the problems of lowering the insulation reliability of the protective layer, affecting the service life of the cable, changing the performance of the protective layer, etc., so as to improve the service life and achieve excellent flame retardant effect. , good flame retardant performance

Inactive Publication Date: 2018-01-19
安徽伙伴电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current-carrying capacity of the cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the protective layer covered by the cable core exceeds the upper limit, the performance of the protective layer will change. As a result, the insulation reliability of the protective layer is greatly reduced, which affects the service life of the cable
The existing ordinary cables have problems of poor structural stability and flammability, so the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A flame-retardant power cable with a stable structure, including a cable core and a protective sheath covering the outside of the cable core. The raw materials of the protective sheath include 70 parts of nitrile rubber, 40 parts of neoprene rubber, 20 parts of polyurethane rubber, and 6 parts of plasticizer, 20 parts of modified magnesium hydroxide, 20 parts of melamine phosphate, 40 parts of expanded graphite, 2 parts of silane coupling agent, 2 parts of hydroxyethyl cellulose, 0.9 parts of chlorinated polyethylene, antioxidant AT 1 part of -215, 3 parts of ultraviolet absorber UV-327, 1 part of light stabilizer 744, 9 parts of crosslinking agent.

Embodiment 2

[0016] A flame-retardant power cable with a stable structure, including a cable core and a protective sheath covering the outside of the cable core. The raw materials of the protective sheath include: 90 parts of nitrile rubber, 20 parts of neoprene rubber, 30 parts of polyurethane rubber, and 3 parts of plasticizer, 30 parts of modified magnesium hydroxide, 10 parts of melamine phosphate, 50 parts of expanded graphite, 1 part of silane coupling agent, 4 parts of hydroxyethyl cellulose, 0.5 parts of chlorinated polyethylene, antioxidant AT 2 parts of -215, 1 part of ultraviolet absorber UV-327, 2 parts of light stabilizer 744, 5 parts of crosslinking agent.

[0017] The modified magnesium hydroxide is prepared by the following process: dissolving monomethyl polyethylene glycol in chloroform, adding succinic anhydride, 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride Stir salt and N-hydroxysuccinimide, add titanium sulfate, ammonium fluoride, urea, magnesium hydroxide...

Embodiment 3

[0019] A flame-retardant power cable with a stable structure, including a cable core and a protective sheath covering the outside of the cable core. The raw materials of the protective sheath include 75 parts of nitrile rubber, 35 parts of neoprene rubber, 22 parts of polyurethane rubber, and 5 parts of plasticizer, 22 parts of modified magnesium hydroxide, 18 parts of melamine phosphate, 42 parts of expanded graphite, 1.8 parts of silane coupling agent, 2.5 parts of hydroxyethyl cellulose, 0.8 parts of chlorinated polyethylene, antioxidant AT -215 1.2 parts, ultraviolet absorber UV-327 2.5 parts, light stabilizer 744 1.2 parts, crosslinking agent 8 parts.

[0020] The plasticizer includes by weight: 2 parts of diisooctyl phthalate, 2 parts of epoxy soybean oil, and 0.2 part of disproportionated rosin. The crosslinking agent includes by weight: 5 parts of zinc dimethacrylate, 2 parts of ammonium dichromate, and 4 parts of sulfur.

[0021] Modified magnesium hydroxide is prepa...

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PUM

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Abstract

The invention discloses a stable-structure flame-retarding power cable, which includes a cable core and a protective sheath which coats the outer side of the cable core. The protective sheath includes, by weight, 70-90 parts of nitrile butadiene rubber, 20-40 parts of chloroprene rubber, 20-30 parts of polyurethane rubber, 3-6 parts of a plasticizer, 20-30 parts of modified magnesium hydroxide, 10-20 parts of melamine phosphate, 40-50 parts of expanded graphite, 1-2 parts of a silane coupling agent, 2-4 parts of hydroxyethyl cellulose, 0.5-0.9 parts of chlorinated polyethylene, 1-2 parts of anantioxidant AT-215, 1-3 parts of an ultraviolet absorber UV-327, 1-2 parts of a photostabilizer 744, and 5-9 parts of a crosslinking agent. The stable-structure flame-retarding power cable has high density and high binding force, is further improved in flame-retarding performance, has very excellent mechanical performances, is balanced in flexibility and hardness and is not liable to fracture, and has good structural stability in the protective sheath.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a structurally stable flame-retardant power cable. Background technique [0002] The current-carrying capacity of the cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the protective layer covered by the cable core exceeds the upper limit, the performance of the protective layer will change. As a result, the insulation reliability of the protective layer is greatly reduced, which affects the service life of the cable. The existing ordinary cables have problems of poor structural stability and flammability, so the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention. How to enhance the flame retardant performance of the cable protective layer and enhance the stability of the protective layer s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L11/00C08L75/04C08L93/04C08K13/06C08K3/22C08K5/3492C08K7/24C08K5/12C08K5/1515H01B3/28
Inventor 黄海琴童茜邵立忠
Owner 安徽伙伴电气有限公司
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