Fireproof cable for nuclear power station and preparation method of fireproof cable

A technology for fireproof cables and nuclear power plants, which is applied in the directions of insulated cables, cables, circuits, etc., can solve the problems that ordinary cables are difficult to achieve, and achieve good application prospects, play a flame retardant effect, and simple processing technology.

Inactive Publication Date: 2017-05-10
宜昌华润红旗电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is obviously difficult for ordinary cables to meet such requirements

Method used

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  • Fireproof cable for nuclear power station and preparation method of fireproof cable
  • Fireproof cable for nuclear power station and preparation method of fireproof cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 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, 25 parts of silicon dioxide, 3 parts of diphenylsilanediol, 2 parts of dicumyl peroxide, and 1 part of auxiliary agent BHT were kneaded in a vacuum kneader for 5 Minutes, followed by mixing with an internal mixer for 10 minutes to obtain a silicone rubber masterbatch, and then extruding the silicone rubber masterbatch through a special extruder for rubber cables at 60°C to coat the copper core wire to form a ceramic silicone rubber Insulation fire layer. Then, silicon dioxide is coated on the ceramicized silicone rubber insulating fireproof layer by coating equipment to form a radiation-resistant layer. 100 parts of polyethylene, 18 parts of ammonium polyphosphate, 2 parts of benzoyl peroxide and 3 parts of additive BHT were mixed through a mixer for 5 minutes to obtain a halogen-free flame-retardant polyethylene cable compound. The ...

Embodiment 1

[0017] Table 1 Embodiment 1 The fireproof performance (fire resistance characteristic test) of a kind of nuclear power plant fireproof cable

[0018]

Embodiment 2

[0020] The copper rod is drawn on a wire drawing machine, then annealed and then coiled for use. Knead 100 parts by mass of methyl vinyl silicone rubber, 30 parts of silicon dioxide, 2 parts of diphenylsilanediol, 2 parts of dicumyl peroxide, and 5 parts of auxiliary agent BP-2 in a vacuum Machine kneading for 8 minutes, followed by internal mixer kneading for 20 minutes to obtain a silicone rubber masterbatch, and then the silicone rubber masterbatch is extruded and coated on the copper core wire at 80°C through a special extruder for rubber cables to form a ceramic Silicone rubber insulating fireproof layer. Then, silicon dioxide is coated on the ceramicized silicone rubber insulating fireproof layer by coating equipment to form a radiation-resistant layer. Mix 100 parts of polyethylene, 18 parts of ammonium polyphosphate, 1 part of benzoyl peroxide and 2 parts of additive BP-2 through a mixer for 5 minutes to obtain a halogen-free flame-retardant polyethylene cable compoun...

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Abstract

The invention relates to fireproof cable for a nuclear power station and a preparation method of the fireproof cable, and belongs to the technical field of special cables. The cable includes six layers, namely, a conductive copper core, a special rubber insulated fireproof layer, an inorganic-material anti-radiation layer, a halogen-free flame-retardant polymer inner sheath layer, an armored layer and a halogen-free flame-retardant polymer oversheath layer. The conductive copper core is wrapped in the special rubber insulated fireproof layer, the special rubber insulated fireproof layer is extruded and molded by a rubber extrusion device, an inorganic material wraps the special rubber insulated fireproof layer to form the anti-radiation layer, the halogen-free flame-retardant polymer inner sheath layer wraps the periphery of the anti-radiation layer by extrusion, the steel band armored layer is wrapped, and the halogen-free flame-retardant polymer oversheath layer wraps the armored layer by extrusion. The cable is characterized by high anti-radiation performance, high fireproof and flame-resistant performances, excellent flame-retardant performance and convenient laying.

Description

technical field [0001] The invention belongs to the technical field of special cables and relates to a novel fireproof cable for nuclear power plants. Background technique [0002] With the rapid development of my country's nuclear power industry and the high emphasis on the safety of nuclear power plant buildings, fire-resistant cables for nuclear power plants have been used more and more widely. high demands. When the cables used in nuclear power plants are subjected to a large amount of radiation, the insulation and sheath materials will become brittle and their mechanical properties will deteriorate. Therefore, as insulation and sheath materials for cables in nuclear power plants, they must have excellent radiation resistance and high fire resistance. It is obviously difficult for ordinary cables to meet such requirements. In addition, the sheath material of the cable must be a low-smoke, non-toxic, non-corrosive halogen-free flame-retardant cable to meet special nucle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/02H01B3/44H01B3/28H01B7/18
CPCH01B7/295H01B3/28H01B3/44H01B7/0208H01B7/1875H01B7/1895
Inventor 闫甲田胡玉红杨发新陈卫丰李德江李永双
Owner 宜昌华润红旗电缆有限公司
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