A radiation crosslinked high temperature resistant low smoke halogen free flame retardant insulated wire

An insulated wire, cross-linked insulation technology, applied in insulated cables, insulated conductors, circuits, etc., can solve the problems of wire aging, aggravated fire, poor processing fluidity, etc., to achieve convenient installation and maintenance, improve production efficiency, and temperature resistance. high effect

Inactive Publication Date: 2017-08-29
SHANGHAI XINYI ELECTRICAL CIRCUIT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the basic temperature resistance level of civilian wires is 70°C, but some people choose small-sized wires to save money during decoration, regardless of the increase in household appliances in the future, and do not avoid heat sources during installation and laying, resulting in the actual temperature of the wires. If the temperature is too high, it will lead to accelerated aging of the wire and cause a fire accident
[0005] The insulation materials used in low-smoke, halogen-free, flame-retardant wires or irradiation cross-linked low-smoke, halogen-free, flame-retardant wires that are common in the market now mostly use non-toxic inorganic flame retardants such as aluminum hydroxide, magnesium hydroxide, and zinc borate. These flame retardants need to add 50% to 60% (weight percentage) to play a good flame retardant effect, and a large amount of inorganic flame retardants will greatly reduce the mechanical properties of the material. Finally, the processing fluidity of the material is very poor, and the screw torque rises sharply, which makes the granulation production very difficult, and the insulation extrusion is also very difficult. If the material melts and drips when burning, it is easier to spread the fire, aggravate the fire, and make the material Exposing new surfaces to accelerate combustion

Method used

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  • A radiation crosslinked high temperature resistant low smoke halogen free flame retardant insulated wire

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A radiation crosslinked high temperature resistant low smoke halogen free flame retardant insulated wire, its structure is as follows figure 1 As shown, it consists of an annealed oxygen-free copper conductor 1 and an irradiation cross-linked insulating layer 2 wrapped outside the annealed oxygen-free copper conductor 1 .

[0031] Among them, the radiation cross-linked insulating layer 2 is based on the EVA / HDPE blend system, and the resin-based modifier MPOE, the cross-linking auxiliary agent DPS, the compatibilizer PPA masterbatch and the flame retardant Mg(OH) are added. 2 , wherein, the weight ratio of EVA / HDPE is 70:30, the weight ratio of EVA / HDPE blending system and resin-based modifier is 80:20, the above two components constitute the compound, crosslinking aid and mixing The weight ratio of the materials is 2:100, the content of the compatibilizer in the mixture is 0.05wt%, and the content of the flame retardant in the mixture is 0.15wt%.

[0032] A special lo...

Embodiment 2

[0034] A radiation-crosslinked high-temperature-resistant, low-smoke, halogen-free, flame-retardant insulated wire is composed of an annealed oxygen-free copper conductor and a radiation-crosslinked insulating layer wrapped around the annealed oxygen-free copper conductor, wherein the radiation-crosslinked insulating layer is composed of The EVA / HDPE blend system is used as the base material, and the resin-based modifier MPOE, the cross-linking aid DPS, the compatibilizer fluoropolymer and the flame retardant Al(OH) are added 3 , wherein, the weight ratio of EVA / HDPE is 70:30, the weight ratio of EVA / HDPE blending system and resin-based modifier is 80:20, the above two components constitute the compound, crosslinking aid and mixing The weight ratio of the materials is 2:100, the content of the compatibilizer in the mixture is 0.05wt%, and the content of the flame retardant in the mixture is 0.15wt%.

[0035] A special low-smoke and halogen-free extruder is used to prepare the ...

Embodiment 3

[0037] A radiation-crosslinked high-temperature-resistant, low-smoke, halogen-free, flame-retardant insulated wire is composed of an annealed oxygen-free copper conductor and a radiation-crosslinked insulating layer wrapped around the annealed oxygen-free copper conductor, wherein the radiation-crosslinked insulating layer is composed of The EVA / EPDM blend system is used as the base material, and the resin-based modifier MPOE, the cross-linking aid DPS, the compatibilizer fluoropolymer and the flame retardant Al(OH) are added 3 , wherein, the weight ratio of EVA / EPDM is 70:30, the weight ratio of EVA / HDPE blending system and resin-based modifier is 80:20, the above two components constitute the mixture, and the crosslinking aid and the mixing The weight ratio of the material is 2:100, the content of the compatibilizer in the mixture is 0.05wt%, and the content of the flame retardant in the mixture is 0.16wt%. Copper agent, ammonium octamolybdate, clay and nano calcium carbonat...

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Abstract

The invention relates to an irradiation crosslinking high temperature resistance low-smoke halogen-free flame retardant insulation wire. The insulation wire is composed of an annealing oxygen-free copper conductor and an irradiation crosslinking insulation layer which wraps the annealing oxygen-free copper conductor. The irradiation crosslinking insulation layer uses an EVA / HDPE blend system or an EPDM / EVA blend system as a base material, and a resin matrix modified agent, a crosslinking addition agent, a compatibility agent and a flame retardant agent are added. Compared with the prior art, the insulation wire provided by the invention has the advantages of high temperature resistance, high safety and reliability, high production efficiency, convenient installation and maintenance and the like.

Description

technical field [0001] The invention relates to an insulated wire, in particular to a radiation-crosslinked, high-temperature-resistant, low-smoke, halogen-free, flame-retardant insulated wire. Background technique [0002] Traditional flame-retardant cables mainly use halogen-containing materials such as flame-retardant polyvinyl chloride, neoprene, and chlorosulfonated polyethylene as the sheath of the cable to suppress flame spread. However, these flame-retardant cables will release a large amount of corrosive gas and dense smoke during combustion. The smoke blocks the line of sight and makes it difficult to escape from the fire scene; the toxic gas suffocates people and endangers people's lives. The danger of this potential "secondary disaster" is greater than that of direct combustion. According to statistics, more than 80% of personal casualties and equipment losses are caused by hydrogen chloride, [0003] It is caused by toxic and harmful gases such as carbon monox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B7/295
Inventor 冯广智田洪雨
Owner SHANGHAI XINYI ELECTRICAL CIRCUIT EQUIP
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