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Cable jacket material for nuclear power station of third generation and preparation method for cable jacket material

A cable sheath material and nuclear power plant technology, applied in the field of power cables, can solve the problem that the performance of the cable sheath material cannot reach that of the cable sheath material, and achieve the effects of excellent radiation resistance, excellent quality, and strong heat aging resistance

Inactive Publication Date: 2012-07-25
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the performance of the current cable sheathing materials cannot meet the high requirements of the third-generation nuclear power plant cable sheathing materials, especially the 60-year service life is a technical problem that is difficult to solve for the existing cable sheathing materials, but the current third-generation The establishment of modern nuclear power plants urgently needs to solve this problem, which requires the advent of cable sheathing materials with good performance and a service life of up to 60 years.

Method used

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  • Cable jacket material for nuclear power station of third generation and preparation method for cable jacket material

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Experimental program
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Effect test

Embodiment 1

[0026] The main process equipment required for the preparation of the product of the present invention are: internal mixer, twin-screw extruder, granulation equipment and the like.

[0027] A cable sheathing material for third-generation nuclear power plants, its raw material formula components and the weight ratio of each component are:

[0028] Ethylene vinyl acetate copolymer (the ethylene vinyl acetate copolymer is obtained by copolymerizing ethylene (referred to as E) and vinyl acetate (referred to as VA): 100 parts;

[0029] The flame retardant is molybdenum compound, aluminum hydroxide and magnesium hydroxide: a total of 155 parts;

[0030] Molybdenum compound (the molybdenum compound is molybdenum trioxide and molybdenum pentoxide): 5 parts;

[0031] Aluminum hydroxide: 100 parts;

[0032] Magnesium hydroxide: 50 parts;

[0033] Antioxidants are 2,2,4-trimethyl-1,2-dihydroquinoline polymer and tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate)pentaerythritol ...

Embodiment 2

[0047] The main process equipment required for the preparation of the product of the present invention are: internal mixer, twin-screw extruder, granulation equipment and the like.

[0048] A cable sheathing material for third-generation nuclear power plants, its raw material formula components and the weight ratio of each component are:

[0049] Ethylene vinyl acetate copolymer (the ethylene vinyl acetate copolymer is obtained by copolymerizing ethylene (referred to as E) and vinyl acetate (referred to as VA): 100 parts;

[0050] Flame retardants are molybdenum compounds, aluminum hydroxide and magnesium hydroxide: a total of 165 parts;

[0051] Molybdenum compound (the molybdenum compound is molybdenum trioxide and molybdenum pentoxide): 5 parts;

[0052] Aluminum hydroxide: 80 parts;

[0053] Magnesium hydroxide: 80 parts;

[0054] Two antioxidants: 2,2,4-trimethyl-1,2-dihydroquinoline polymer and polycarbodiimide: 3.5 parts;

[0055] 2,2,4-trimethyl-1,2-dihydroquinoline ...

Embodiment 3

[0068] The main process equipment required for the preparation of the product of the present invention are: internal mixer, twin-screw extruder, granulation equipment and the like.

[0069] A cable sheathing material for third-generation nuclear power plants, its raw material formula components and the weight ratio of each component are:

[0070] Ethylene vinyl acetate copolymer (the ethylene vinyl acetate copolymer is obtained by copolymerizing ethylene (referred to as E) and vinyl acetate (referred to as VA): 100 parts;

[0071] The flame retardant is molybdenum compound, aluminum hydroxide and magnesium hydroxide: a total of 105 parts;

[0072] Molybdenum compound (the molybdenum compound is molybdenum trioxide and molybdenum pentoxide): 5 parts;

[0073] Aluminum hydroxide: 40 parts;

[0074] Magnesium hydroxide: 60 parts;

[0075] Two antioxidants: tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester and polycarbodiimide: 2.5 parts;

[0076...

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Abstract

The invention relates to a cable jacket material for a nuclear power station of the third generation and a preparation method for the cable jacket material. A raw material formula of the cable jacket material comprises, by weight, 100 parts of ethylene-vinyl acetate copolymers, 105-180 parts of flame retardants, 3-4 parts of antioxidants, 2.5-3 parts of stabilizers, 3-5 parts of lubricants, 2.5-4 parts of coupling agents, 2.5-3 parts of cross-linking agents and 0.5-1.5 parts of crosslinking auxiliaries, wherein the ethylene-vinyl acetate copolymers are made of ethylene and vinyl acetate by means of copolymerization. The preparation method includes the steps: mixing the ethylene-vinyl acetate copolymers, the antioxidants, the lubricants, the stabilizers, the cross-linking agents and the flame retardants by a banbury mixer, then feeding the mixture into a double-screw extruder for extrusion, granulating by granulation equipment prior to adsorbing dicumyl peroxide serving as the cross-linking agents and triallyl isocyanurate serving as the crosslinking auxiliaries, and obtaining the cable jacket material for the nuclear power station of the third generation after cooling. The cable jacket material is fine in performance, and the service life of the cable jacket material is longer than 60 years.

Description

technical field [0001] The invention relates to a cable sheathing material, in particular to a cable sheathing material for third-generation nuclear power plants and a preparation method thereof. The invention belongs to the technical field of power cables and is suitable for use in third-generation nuclear power plants that have special requirements for cable sheathing materials. Background technique [0002] At present, China's nuclear power construction has entered the peak period of development. The third-generation nuclear power plant construction project representing advanced nuclear power technology has been approved in China. According to the requirements of the third-generation nuclear power plant for cable sheathing materials, the cable sheathing material must not only have 60 years Heat aging resistance, high-dose radiation resistance, and higher temperature resistance, acid and alkali resistance, flame retardancy, low-smoke and halogen-free performance, oil resis...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08K13/02C08K3/22H01B7/295
Inventor 王松明谈建伟李斌梁福才赵力夏正军凌国桢陆俊王丽萍
Owner JIANGSUSNGSHANG CABLE GROUP
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