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Flame-retardant and high-insulation cable material for nuclear power plants with radiation resistance

A high-insulation, cable material technology, applied in insulated cables, organic insulators, insulators, etc., can solve the problems of unqualified insulation performance, flame retardant performance, poor performance of high-dose radiation steam, complex production process, etc., to improve radiation resistance performance. , high insulation performance, improve the effect of water immersion

Active Publication Date: 2016-06-29
中广核三角洲(江苏)塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the structure of the existing insulated wire core is a two-layer structure, the inner layer insulation is cross-linked polyethylene, which is used to provide insulation performance, and the outer layer insulation is a highly flame-retardant polyolefin material, which is used to provide high flame-retardant performance; However, there are the following technical problems: (1) The production process is complicated, and the performance margin is small, often resulting in unqualified insulation performance or flame retardant performance; (2) The ability to withstand large doses of radiation and high temperature, water immersion, and steam poor

Method used

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  • Flame-retardant and high-insulation cable material for nuclear power plants with radiation resistance
  • Flame-retardant and high-insulation cable material for nuclear power plants with radiation resistance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A nuclear power plant flame-retardant high-insulation cable material with radiation resistance, the flame-retardant high-insulation cable material is composed of the following components by weight:

[0030] 100 parts of EPDM copolymer,

[0031] 12 parts polyimide,

[0032] 48 parts of magnesium hydroxide,

[0033] 32 parts of silicon dioxide,

[0034] 20 parts of antimony trioxide,

[0035] 5 parts of aluminum oxide,

[0036] 10 parts of zinc oxide,

[0037] 2.5 parts of dicumyl peroxide,

[0038] 1.6 parts of ferric oxide,

[0039] 0.7 parts of calcium oxide,

[0040] 0.9 parts of magnesium oxide,

[0041] 2.4 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer,

[0042] 2.6 parts of 2-mercaptobenzimidazole,

[0043] Vinyl tris(β-methoxyethoxy)silane 1 part,

[0044] 4 parts of PE wax;

[0045] The Mooney viscosity ML(1+4) of the above copolymer is 125°C ≤ 45, and the ethylene content of the copolymer is ≥ 60%;

[0046] The average particle...

Embodiment 2

[0053] Embodiment 2: A kind of flame-retardant high-insulation cable material for nuclear power plants with radiation resistance, the flame-retardant high-insulation cable material is composed of the following components by weight:

[0054] 100 parts of EPDM copolymer,

[0055] 10 parts of polyimide,

[0056] 43 parts of magnesium hydroxide,

[0057] 28 parts of silicon dioxide,

[0058] 23 parts of antimony trioxide,

[0059] 6 parts of aluminum oxide,

[0060] 8 parts of zinc oxide,

[0061] 3 parts of dicumyl peroxide,

[0062] 2.2 parts of ferric oxide,

[0063] 0.6 parts of calcium oxide,

[0064] 0.8 parts of magnesium oxide,

[0065] 2.6 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer,

[0066]2.4 parts of 2-mercaptobenzimidazole,

[0067] Vinyl tris(β-methoxyethoxy)silane 2 parts,

[0068] 2 parts stearic acid;

[0069] The Mooney viscosity ML(1+4) of the above copolymer is 125°C ≤ 45, and the ethylene content of the copolymer is ≥ 60%;

[0070] The ...

Embodiment 3

[0077] Embodiment 3: A kind of flame-retardant high-insulation cable material for nuclear power plants with radiation resistance, the flame-retardant high-insulation cable material is composed of the following components by weight:

[0078] 100 parts of EPDM copolymer,

[0079] 15 parts polyimide,

[0080] 40 parts of magnesium hydroxide,

[0081] 25 parts of silicon dioxide,

[0082] 18 parts of antimony trioxide,

[0083] 9 parts of aluminum oxide,

[0084] 9 parts of zinc oxide,

[0085] 2.5 parts of dicumyl peroxide,

[0086] 3.2 parts of ferric oxide,

[0087] 0.45 parts of calcium oxide,

[0088] 0.65 parts of magnesium oxide,

[0089] 2.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer,

[0090] 2.5 parts of 2-mercaptobenzimidazole,

[0091] Vinyl tris(β-methoxyethoxy)silane 2.5 parts,

[0092] 3 parts of PE wax;

[0093] The Mooney viscosity ML(1+4) of the above copolymer is 125°C ≤ 45, and the ethylene content of the copolymer is ≥ 60%;

[0094] The...

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Abstract

The invention relates to a flame retardant high insulation cable material with radiation resistance for nuclear power plants. The material consists of the following components by weight: 100 parts of ternary ethylene-propylene copolymer, 5-20 parts of polyimide, 35-50 parts of magnesium hydroxide, 24-32 parts of silica, 18-26 parts of antimony oxide, 4-9 parts of alumina, 8-10 parts of zinc oxide, 2-3.5 parts of peroxide diisopropylbenzene, 1.5-3.5 parts of ferric oxide, 0.4-0.8 part of calcium oxide, 0.6-1 part of magnesium oxide, 2.4-2.6 parts of 2,2,4-trimethyl-1,2-dihydrogenated quinoline condensate, 2-3 parts of 2-mercaptobenzimidazole, 1-3 parts of vinyl tri (beta-methoxyl ethoxyl) silane and 0.5-5 parts of a lubricant. According to the invention, comprehensive performances of radiation resistance, heat resistance, high flame retardance and high insulation performance of the substrate are improved, the insulation resistance of the insulation material can be improved to the square of the original one, and the material does not reduce the flame retardant performance and simplifies cable processing technology.

Description

technical field [0001] The invention relates to a cable material for nuclear power plants, in particular to a flame-retardant high-insulation cable material for nuclear power plants with radiation resistance. Background technique [0002] As a complex and efficient energy source, nuclear energy has been highly valued and vigorously developed by the country. The cables used in nuclear power plants, especially the cables used in the containment, according to the third-generation AP1000 nuclear power standard, need to have a normal service life of 60 years in a radiation environment, and withstand large doses of radiation, high temperature, and water immersion in the event of an accident or after an accident. , steam and other harsh conditions can perform safety functions, and its insulated core wire is also required to meet the single vertical burning test of IEC60332-1 and the high insulation resistance of the cable. Flame retardants reduce insulation performance, and high i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L79/08C08K13/02C08K3/22C08K3/36C08K5/14C08K5/3447C08K5/5425H01B7/295
CPCC08K2201/003C08L23/16C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/03H01B3/28H01B3/441H01B7/18H01B7/295C08L79/08C08L23/06C08K13/02C08K3/36C08K5/14C08K5/5425C08K2003/2224C08K3/2279C08K2003/2227C08K5/09C08K2003/2296C08K2003/2206C08K2003/222C08K2003/2272
Inventor 单永东
Owner 中广核三角洲(江苏)塑化有限公司