Nuclear-environment-resistant cable insulation material and preparation method thereof

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

Active Publication Date: 2014-07-09
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

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 cable insulation material is prepared from the following components in parts by mass: 100 parts of ethylene-propylene copolymer-methyl methacrylate copolymer, 135 to 145 parts of mixture of nanometer aluminum hydroxide and aluminum hydroxide, 15 to 20 parts of calcined kaolin, 2.5 to 4.5 parts of mixture of 2,2,4-trimethyl-1,2-hydrogenated quinoline and N-isopropyl-N'-phenyl-p-phenylenediamine, 2.5 to 3.6 parts of mixture of N,N'-bi(2,2,6,6-tetramethyl-4-piperidyl)-1,3-dimethyl formamide and 2-(2'-hydroxyl-5'-tert phenyl) benzotriazole, and the like. A preparation method of the cable insulation material comprises the following steps: sequentially carrying out mixing, rubber filtering, blending, screening and extruding on the matching materials under specific process parameters. According to the cable insulation material provided by the invention, the difficult technical problems that the cable insulation material is poor in irradiation resistance in a cable environment, namely, under a high irradiation condition, and the like, are solved. Thus, the demands of specific high-demand situations, namely, the third generation of nuclear power plants, are satisfied; the requirements of the cable insulation material resistant to a nuclear environment are completely met.

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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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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