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A low-smoke, halogen-free, 750°C resistant cable

A cable and cable core technology, applied in the manufacture of insulated cables, cables/conductors, insulation of conductors/cables, etc., can solve problems such as secondary pollution of the environment, improve mechanical properties, enhance flame retardant properties, and be less brittle and break Effect

Active Publication Date: 2021-06-15
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, such flame retardants will release a large amount of hydrogen halide and smoke when they are burned or processed, causing secondary pollution to the environment, and are gradually banned.

Method used

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  • A low-smoke, halogen-free, 750°C resistant cable
  • A low-smoke, halogen-free, 750°C resistant cable
  • A low-smoke, halogen-free, 750°C resistant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, a low-smoke, halogen-free and 750°C resistant cable provided in this embodiment includes a low-smoke, halogen-free and flame-retardant polyolefin layer 1, a non-woven tape 2, a glass fiber tape 3, and an insulating filler from the outside to the inside. Layer 4, five cable core units 5; each cable core unit 5 sequentially includes ceramic polyolefin insulation layer 5-1, mica tape insulation layer 5-2, phenylenediamine modified graphene oxide layer 5- 3 and conductors 5-4. Wherein, the mica tape insulating layer 5-2 is composed of a layer of 0.10mm mica tape 5-2, the overlap rate of the glass fiber tape 3 to the insulating filling layer 4 is 10%, and the insulating filling layer 4 is an inorganic rope.

[0046] Wherein, the preparation method of the low-smoke halogen-free flame-retardant polyolefin layer comprises the following steps:

[0047] 1) Stir and mix 5 parts by weight of BASF flame retardant, 30 parts of 1,3,5-triazine, 10 parts of ...

Embodiment 2

[0060] Such as figure 2 As shown, a low-smoke, halogen-free and 750°C resistant cable provided in this embodiment includes a low-smoke, halogen-free and flame-retardant polyolefin layer 1, a non-woven tape 2, a glass fiber tape 3, and an insulating filler from the outside to the inside. Layer 4, four cable core units 5; each cable core unit 5 sequentially includes ceramic polyolefin insulation layer 5-1, mica tape insulation layer 5-2, phenylenediamine modified graphene oxide layer 5- 3 and conductors 5-4. Wherein, the mica tape insulation layer 5-2 is made of two layers of mica tape——mica tape 5-21 and mica tape 5-22, the thickness of the two layers of mica tape is 0.12mm and 0.15mm respectively, and the glass fiber tape has an effect on the insulating filling layer. The covering rate is 12%, and the insulating filling layer is glass fiber rope.

[0061] Wherein, the preparation method of the low-smoke halogen-free flame-retardant polyolefin layer comprises the following s...

Embodiment 3

[0075] Such as image 3 As shown, a low-smoke, halogen-free and 750°C resistant cable provided in this embodiment includes a low-smoke, halogen-free and flame-retardant polyolefin layer 1, a non-woven tape 2, a glass fiber tape 3, and an insulating filler from the outside to the inside. Layer 4, five cable core units 5; each cable core unit 5 sequentially includes ceramic polyolefin insulation layer 5-1, mica tape insulation layer 5-2, phenylenediamine modified graphene oxide layer 5- 3 and conductors 5-4. Wherein, the mica tape insulating layer 5-2 is made of two layers of mica tape—mica tape 5-21 and mica tape 5-22, the thickness of the two layers of mica tape is 0.20 mm respectively, and the glass fiber tape 3 pairs of insulating filling layer 4 The overlapping rate is 15%, and the insulating filling layer 4 is an inorganic rope.

[0076] Wherein, the preparation method of the low-smoke halogen-free flame-retardant polyolefin layer comprises the following steps:

[0077]...

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Abstract

The invention provides a low-smoke, halogen-free and 750°C resistant cable, which sequentially includes a low-smoke, halogen-free and flame-retardant polyolefin layer, a non-woven fabric tape, a glass fiber tape, an insulating filling layer, and a plurality of cable core units from outside to inside; Describe the preparation method of low-smoke halogen-free flame-retardant polyolefin layer, comprising the steps of: stirring and mixing BASF flame retardant, 1,3,5-triazine, pentaerythritol, hindered phenol antioxidant in parts by weight; Plant cellulose and magnetite nanoparticles in the mixture are fully stirred again; polyolefin and char-forming agent are added in parts by weight to the obtained mixture, and a twin-screw extruder is used to stir and extrude to obtain the low Smoke-free halogen flame retardant polyolefin layer. The low-smoke, halogen-free and 750°C cable provided by the invention has good flame retardancy, corrosion resistance and mechanical properties, and reduces the release of toxic and harmful gases; the polyolefin layer is prepared by adding plant cellulose and magnetite nanoparticles, which can improve the cable performance. Excellent mechanical properties, antibacterial activity, elasticity and compressive properties.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a low-smoke, halogen-free and 750°C resistant cable. Background technique [0002] With the development of modern science and technology, energy and information are indispensable resources, and the transmission of electric energy and information is inseparable from cables, but unsafe cables are also one of the important ways to spread fire. According to incomplete statistics, accidents caused by cables in fires account for about 35%, and about one-third of the deaths are caused by asphyxiation due to inhalation of toxic gases released when cables burn. Therefore, it is a problem that the cable industry must face to prevent cables from burning and to prevent the release of toxic and harmful corrosive gases and dense smoke. [0003] The choice of protective layer materials for traditional flame-retardant cables is mainly to use halogen-containing materials such as flame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B7/17H01B7/28H01B7/282H01B7/29H01B7/295H01B13/06H01B13/14H01B13/22H01B13/24C08L23/06C08L71/02C08L23/08C08L55/02C08L51/06C08L1/02C08K5/134C08K5/098C08K5/526C08K13/02C08K3/32C08K3/22C08K5/3492C08K5/053
CPCC08K2003/2268C08K2003/2275C08K2003/323C08K2201/01C08K2201/011C08L23/00C08L23/06C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/025C08L2205/03C08L2205/035C08L2207/066H01B7/02H01B7/17H01B7/28H01B7/2806H01B7/2825H01B7/29H01B7/295H01B13/06H01B13/14H01B13/22H01B13/24C08L71/02C08L23/0815C08K13/02C08K5/1345C08K5/098C08L55/02C08K5/20C08L51/06C08K5/526C08L1/02C08K3/32C08K3/22C08K5/3492C08K5/053
Inventor 聂磊李华斌谢刚陈彦
Owner 湖南华菱线缆股份有限公司
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