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Flexible halogen-free flame-retardant fire-prevention cable and manufacturing method thereof

A fireproof cable, flexible technology, applied in the direction of cable/conductor manufacturing, insulated cable, bendable cable, etc., can solve the problems of difficult to popularize, difficult to promote, expensive equipment, etc., to achieve good market prospects, simple processing technology, Easy to install and install

Inactive Publication Date: 2017-03-15
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cable has excellent fire performance, but because the mineral insulated cable needs special production and processing equipment, the equipment is expensive, and the capital investment is large; A certain degree of restriction; coupled with the special requirements of copper sheathed magnesium oxide mineral insulated cables in the process of transportation, laying, installation and use, it is difficult to popularize and use on a large scale, especially difficult to promote in civil buildings

Method used

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  • Flexible halogen-free flame-retardant fire-prevention cable and manufacturing method thereof
  • Flexible halogen-free flame-retardant fire-prevention cable and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The copper rod is drawn on a wire drawing machine, then annealed and then coiled for use. 100 parts by mass of dimethyl silicone rubber, 20 parts of silicon dioxide particles with a particle size of 100 nanometers, 2 parts of diphenylsilanediol, 1 part of dicumyl peroxide, 2 parts of other additives, Knead in a vacuum kneader for 5 minutes, then use an internal mixer for 10 minutes to prepare a special rubber / inorganic nanoparticle hybrid composite material, and then pass the special rubber / inorganic nanoparticle hybrid composite material through a rubber cable special extruder , Extruded and coated on the copper core wire at 60°C to form a special rubber / inorganic nanoparticle hybrid composite material insulation fireproof layer. Then the composite mica tape is passed through the wrapping machine, and is overlapped and wrapped on the insulating fireproof layer. The overlapping rate in the wrapping process is 50%, and the wrapping angle is 50°. Mix 100 parts of polyet...

Embodiment 2

[0019] The copper rod is drawn on a wire drawing machine, then annealed and then coiled for use. 100 parts by mass of methyl vinyl silicone rubber, 30 parts of silicon dioxide particles with a particle size of 100 nanometers, 2 parts of diphenylsilanediol, 2 parts of dicumyl peroxide, 5 parts of other additives , kneading in a vacuum kneader for 8 minutes, followed by mixing with an internal mixer for 20 minutes to prepare a special rubber / inorganic nanoparticle hybrid composite material, and then passing the special rubber / inorganic nanoparticle hybrid composite material through a rubber cable special extruder , Extruded and coated on the copper core wire at 80°C to form an insulating fireproof layer. Then the composite mica tape is passed through the wrapping machine, and is overlapped and wrapped on the insulating fireproof layer of the special rubber / inorganic nanoparticle hybrid composite material. The overlap rate in the wrapping process is 30%, and the wrapping angle i...

Embodiment 3

[0021] The copper rod is drawn on a wire drawing machine, then annealed, stranded and coiled for use. 100 parts by mass of ethyl silicone rubber, 25 parts of inorganic silica particles with a particle size of 300 nanometers, 2 parts of diphenyl dihydroxysiloxane, 2 parts of benzoyl peroxide, 2 parts of other auxiliary kneading in a vacuum kneader for 10 minutes, followed by kneading in an internal mixer for 15 minutes to obtain a special rubber / inorganic nanoparticle hybrid composite material, and then the special rubber / inorganic nanoparticle hybrid composite material was extruded for rubber cables Out of the machine, extrude and coat the copper core wire at 70°C to form an insulating fireproof layer. Then the composite mica tape is passed through the wrapping machine, and is overlapped and wrapped on the insulating fireproof layer of the special rubber / inorganic nanoparticle hybrid composite material. The overlapping rate in the wrapping process is 40%, and the wrapping ang...

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Abstract

The invention belongs to the cable technology field and relates to a novel flexible halogen-free flame-retardant fire-prevention cable and a manufacturing method thereof. The cable comprises four layers of structures and is formed by a conductive copper wire core, an insulation fire-prevention layer made of a special rubber / inorganic nano particle hybrid composite material, an inorganic composite band fireproof layer and a halogen-free flame-retardant polymer sheath layer. The insulation fire-prevention layer wraps the conductive copper wire core and the layer carries out extrusion molding through rubber extrusion processing equipment. A fireproof inorganic composite band wraps above the insulation fire-prevention layer so as to form a fireproof layer. And finally, through extrusion processing, the halogen-free flame-retardant polymer sheath layer wraps a periphery of the fireproof layer. Compared to other fireproof cables, the cable of the invention has characteristics that the cable has good flexibility so that the cable can be bended at a large degree; good fireproof fire-prevention performance is possessed; flame-retardant performance is good and a smoke amount is low; during a production process, a length of the cable is not limited; and laying is convenient and cost is low.

Description

technical field [0001] The invention belongs to the technical field of cables, and relates to a novel flexible halogen-free flame-retardant fireproof cable and a preparation method thereof. Background technique [0002] With the development of my country's economy and society and the emphasis on building safety, fire-resistant cables have been more widely used. Relevant departments of the state and local governments have relatively clear requirements for the selection and use of fire-resistant cables in various building fire protection design specifications. . The main difference between the structure of the fireproof cable and the ordinary cable is that the fireproof cable adds a fireproof layer. At present, the fireproof cables used in the market are still dominated by the traditional two-layer or multi-layer mica tape overlapping wrapping process. This kind of cable is easily broken down under high temperature and high pressure, thus losing its insulation. Followed by m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/28H01B7/04H01B7/17H01B7/29H01B7/295H01B13/00H01B13/14H01B13/24
CPCH01B7/04H01B3/28H01B7/17H01B7/29H01B7/295H01B13/00H01B13/14H01B13/24
Inventor 陈卫丰李德江李永双闫甲田胡玉红杨发新
Owner CHINA THREE GORGES UNIV
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