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Nuclear environment resistant cable insulation material and preparation method thereof

A cable insulation and environmental technology, applied in the cable field, can solve problems such as difficult service life, cable material damage, personnel and equipment damage, etc., and achieve good flame retardant performance, good electrical insulation performance, and long-term thermal aging resistance.

Active Publication Date: 2018-01-09
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some cable materials will produce a lot of smoke and hydrogen halide gas in the event of a fire, causing great damage to personnel and equipment. Therefore, it is necessary for cable insulation materials to have low smoke, halogen-free, and low toxicity.
The rupture of steam pipes caused by nuclear power plant accident conditions, the instantaneous high temperature and high pressure impact has a strong destructive effect on cable materials, chemical spraying at high temperatures will cause corrosion to cable materials, and affect the electrical properties and aging of insulating materials performance
In order to achieve the purpose of flame retardancy, a large amount of flame retardant is required to be added to the cable insulation material, but this method will greatly affect the mechanical properties and electrical insulation properties of the insulation material; therefore, in order to meet the heat resistance and radiation resistance of the insulation material , flame retardant and electrical properties, the current cable insulation materials are difficult to achieve, especially the service life of more than 60 years is a difficult test for the existing cable insulation materials, but the establishment of the third generation of nuclear power plants, especially AP1000 The popularization and application of nuclear power technology urgently needs to solve this problem, which requires cable insulation materials with good performance and a service life of more than 60 years.

Method used

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  • Nuclear environment resistant cable insulation material and preparation method thereof

Examples

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preparation example Construction

[0040] The preparation method of the nuclear environment resistant cable insulating material of this example, the steps are as follows:

[0041] 1) Weigh the raw materials of the cable insulation material according to the formula;

[0042]2) Then mix the binary ethylene propylene rubber methyl methacrylate copolymer, the mixture of nano-aluminum hydroxide and aluminum hydroxide, and vinyl tris(β-methoxyethoxy)silane in the disperser at (500 Stirring at a stirring speed of ±50) rev / min;

[0043] When stirring, first preheat the disperser to 70-75°C, then feed and stir the mixture of nano-aluminum hydroxide and aluminum hydroxide for 4-6 minutes; then add vinyl tris(β-methoxyethoxy) Silane, stir for another 5 to 7 minutes; finally add binary ethylene propylene rubber methyl methacrylate copolymer, stir for another 4 to 6 minutes before unloading;

[0044] 3) Mix the product obtained in step 2) with paraffin wax and microcrystalline wax in an internal mixer, N,N'-bis(2,2,6,6-te...

Embodiment 1

[0050] A cable insulating material resistant to nuclear environment, which is composed of the following substances in parts by mass:

[0051] 100 parts of binary ethylene propylene rubber methyl methacrylate copolymer;

[0052] 10 parts of nano aluminum hydroxide;

[0053] 125 parts of aluminum hydroxide;

[0054] 15 parts of calcined kaolin;

[0055] 1.0 parts of 2,2,4-trimethyl-1,2-dihydroquinoline;

[0056] 2.8 parts of N-isopropyl-N'-phenyl-p-phenylenediamine;

[0057] 1.5 parts of N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-benzenedicarboxamide;

[0058] 1 part of 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole;

[0059] Zinc oxide 4.0 parts;

[0060] 2.5 parts of paraffin;

[0061] 3.5 parts of microcrystalline wax;

[0062] 2.5 parts of vinyl tris (β-methoxyethoxy) silane;

[0063] 3.0 parts of 2,5-dimethyl-2,5-diperoxy-tert-butylhexane;

[0064] 1.2 parts of triallyl isocyanurate.

[0065] The preparation method of the above-mentioned nuclear environment...

Embodiment 2

[0068] A cable insulating material resistant to nuclear environment, which is composed of the following substances in parts by mass:

[0069] 100 parts of binary ethylene propylene rubber methyl methacrylate copolymer;

[0070] 13 parts of nano aluminum hydroxide;

[0071] 132 parts of aluminum hydroxide;

[0072] 20 parts of calcined kaolin;

[0073] 1.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline;

[0074] 3.0 parts of N-isopropyl-N'-phenyl-p-phenylenediamine;

[0075] 2.0 parts of N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-benzenedicarboxamide;

[0076] 1.6 parts of 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole;

[0077] 6.0 parts of zinc oxide;

[0078] 4.0 parts of paraffin;

[0079] 5.0 parts of microcrystalline wax;

[0080] 3.5 parts of vinyl tris (β-methoxyethoxy) silane;

[0081] 3.5 parts of 2,5-dimethyl-2,5-diperoxy-tert-butylhexane;

[0082] Triallyl isocyanurate 1.6 parts.

[0083] The preparation method of the insulating material for nuclear-...

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Abstract

The invention relates to a nuclear environment-resistant cable insulation material, the mass components of which are binary ethylene-propylene rubber-methyl methacrylate copolymer: 100 parts; a mixture of nanometer aluminum hydroxide and aluminum hydroxide: 135-145 parts ; Calcined kaolin: 15-20 parts; 2,2,4-trimethyl-1,2-dihydroquinoline and N-isopropyl-N'-phenyl-p-phenylenediamine: 2.5-4.5 N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-phthalamide and 2-(2'-hydroxy-5'-tert-octyl phenyl) benzotriazole mixture: 2.5 to 3.6 parts, etc. The preparation method of the insulation material is as follows: the ingredients are mixed, rubber filtered, kneaded, sliced ​​and extruded in sequence, and prepared under the requirements of specific process parameters. This product solves the technical problems such as poor radiation resistance under the high radiation environment of the cable environment, meets the needs of the special high-demand occasion of the third-generation nuclear power plant, and fully meets the requirements of nuclear-resistant environment cable insulation materials.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a cable insulating material, more specifically to a nuclear environment-resistant cable insulating material and a preparation method thereof, which is suitable for third-generation nuclear power plants, especially AP1000 shells, which have special requirements for cable insulating materials use of internal cables. Background technique [0002] The increasingly severe energy situation has brought huge development space for China's nuclear power construction. The third-generation nuclear power plant, which represents the advanced technology of nuclear power, has put forward very strict requirements for various supporting products, bringing together the essence of technology from all walks of life. According to the third-generation nuclear power plant The requirements for cable insulation materials put forward by nuclear power plants, cable insulation materials should have very good ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/04C08K13/02C08K3/22C08K3/34C08K5/01C08K5/3437C08K5/18C08K5/3435C08K5/3475C08K5/14C08K5/3492
Inventor 李斌梁福才朱冬杰孙彬陈熙谈建伟凌国桢王丽萍
Owner JIANGSUSNGSHANG CABLE GROUP
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