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Environment-friendly low-smoke halogen-free flame-retardant power cable

An environmentally friendly technology for power cables, applied in the field of environmentally friendly low-smoke, halogen-free, and flame-retardant power cables, can solve problems such as the anti-ultraviolet layer has no good anti-aging ability, the outer sheath layer does not have flame-retardant effects, and rescue work is difficult. Effects of increasing glass transition temperature, reducing crosslink density, and strong tensile strength

Active Publication Date: 2021-06-11
湖南华菱线缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-ultraviolet layer of the invention patent is set in the flame-retardant layer, and the anti-ultraviolet layer does not have good anti-aging ability. If it is exposed to sunlight for a long time, it may cause a fire due to local high temperature
And the outer sheath layer of the invention patent does not have flame retardant effect, it is at the cost of sacrificing the outer sheath layer, starting from the inner asbestos layer for flame retardant
This will inevitably cause the outer layer of the cable to burn and release a lot of heat and smoke, which will cause great difficulties for rescue work.

Method used

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  • Environment-friendly low-smoke halogen-free flame-retardant power cable
  • Environment-friendly low-smoke halogen-free flame-retardant power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 As shown, an environmentally friendly low-smoke halogen-free flame-retardant power cable provided in this embodiment includes a core assembly 1 and a central filling rope 2 from the inside to the outside. The core assembly 1 is twisted in the same direction around the central filling rope 2. The wire core assembly 1 includes a wire core body 11. The outer surface of the wire core body 11 is covered with an inner shielding layer 12. The outer surface of the inner shielding layer 12 is covered with an insulating layer 13. The outer surface of the insulating layer 13 is fixedly connected to the outer shielding layer 4. The outer shielding layer Fireproof filler 3 is filled between layer 4 and insulating layer 13, the outer surface of outer shielding layer 4 is fixedly connected with inner sheath layer 5, and the outer surface of inner sheath layer 5 is sequentially connected with armored layer 6, fireproof layer 7, and outer sheath layer 8 and UV protectio...

Embodiment 2

[0073] The difference between this embodiment and embodiment 1 is that the material of the UV protection layer includes the following components by weight components:

[0074]

[0075] Wherein, the preparation material of graphene oxide slow-release carrier, by weight component, includes the following components:

[0076]

[0077] The preparation method of graphene oxide slow release carrier, comprises the following steps:

[0078] 1) 4 parts of expandable graphene nanopowders are dissolved in 110 parts of mass fraction as 98% concentrated sulfuric acid, stirred at 62.5rpm for 1.25h, then 7.5 parts of potassium permanganate and 3 parts of sodium nitrate are added , stirred at 125rpm for 18h;

[0079] 2) After adding 750ml of distilled water to the mixture obtained in step 1), add 7 parts of hydrogen peroxide solution to terminate the oxidation reaction to obtain a graphene oxide mixture;

[0080] 3) After the graphene oxide mixture obtained in step 2) was left to stand...

Embodiment 3

[0090] The difference between this embodiment and embodiment 1 and embodiment 2 is that the material of the UV protection layer includes the following components by weight components:

[0091]

[0092] The preparation material of graphene oxide sustained-release carrier, by weight component, includes the following components:

[0093]

[0094] The preparation method of graphene oxide slow release carrier, comprises the following steps:

[0095] 1) 5 parts of expandable graphene nanopowders are dissolved in 120 parts of massfraction in the concentrated sulfuric acid of 98%, stir 1.5h with 75rpm rotating speed, then add 10 parts of potassium permanganate and 5 parts of sodium nitrate, Stir at 150rpm for 24h;

[0096] 2) After adding 850ml of distilled water to the mixture obtained in step 1), add 8 parts of hydrogen peroxide solution to terminate the oxidation reaction to obtain a graphene oxide mixture;

[0097] 3) After the graphene oxide mixture obtained in step 2) wa...

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Abstract

The invention provides an environment-friendly low-smoke halogen-free flame-retardant power cable with an anti-ultraviolet layer. The cable comprises a wire core assembly and a central filling rope from inside to outside, the wire core assembly is twisted around the central filling rope in a same direction, and the wire core assembly comprises a wire core body. The outer surface of the wire core body is coated with an inner shielding layer, the outer surface of the inner shielding layer is coated with an insulating layer, and the outer surface of the insulating layer is fixedly connected with an outer shielding layer. A fireproof filler is filled between the outer shielding layer and the insulating layer, the outer surface of the outer shielding layer is fixedly connected with an inner sheath layer, and the outer surface of the inner sheath layer is sequentially connected with an armored layer, a fireproof layer, an outer sheath layer and an anti-ultraviolet layer. According to the present invention, the ultraviolet-proof performance of the cable provided by the invention is relatively higher in glass transition temperature, and the brittle-tough transition is realized during ultraviolet radiation, so that the tensile strength of the cable is improved, partial aging side effects are counteracted, and further the cable has relatively higher ultraviolet-proof capability; the outer shielding layer is formed by weaving tin-plated steel wires and aramid fibers in a mixed manner, and the tin-plated steel wires are used for shielding interference, so that the excellent transmission efficiency of the cable is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of power cables, and in particular relates to an environment-friendly, low-smoke, halogen-free, flame-retardant power cable. Background technique [0002] At present, with the improvement of my country's comprehensive national strength and the vigorous development of various fields, the demand for power cables is increasing day by day. Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, power station lead-out lines, and industrial and mining enterprises. Internal power supply and underwater transmission lines across rivers and seas, etc. [0003] For a long time, the coating materials of traditional cables are mainly halogen-containing polymers such as polyvinyl chloride (PVC), neoprene rubber (CR), chlorosulfonated polyethylene (CSM), etc. These materials have flame retardant properties and can suppress flames. However, when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/28H01B9/02H01B7/18H01B7/29H01B7/295H01B3/28H01B7/02C09D175/04C09D165/00C09D7/61C09D7/62
CPCH01B7/2813H01B9/024H01B9/02H01B7/183H01B7/1875H01B7/02H01B3/28H01B7/295H01B7/292H01B7/28H01B7/2806C09D175/04C09D165/00C09D7/61C09D7/62C08K2201/011C08K2003/2241C08L65/00C08K3/22C08K3/042C08K3/28C08K9/02C08K9/04C08K13/06C08L75/04
Inventor 王焱张海平陈彦王振金
Owner 湖南华菱线缆股份有限公司
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