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Radiation-resistant halogen-free low smoke flame retardant insulating material for cables of nuclear power plants and preparation method

A nuclear power plant cable, low-smoke flame-retardant technology, applied to rubber insulators, organic insulators, etc., can solve the problem of rare production of containment cables, and achieve excellent radiation resistance, scientific and reasonable proportioning, and advanced technology.

Active Publication Date: 2009-09-16
BAOSHENG SCI & TECH INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of cable materials, many enterprises can only produce wires and cables outside the containment, and rarely produce cables inside the containment, which cannot meet the market demand.

Method used

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  • Radiation-resistant halogen-free low smoke flame retardant insulating material for cables of nuclear power plants and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Insulation materials for radiation-resistant, halogen-free, low-smoke, flame-retardant cables for nuclear power plants. The raw materials include: a matrix composed of EPDM rubber-phenyl silicone rubber (60-40-100-0), magnesium hydroxide, hydroxide Flame retardant system composed of aluminum and zinc borate, reinforcing agent composed of white carbon black, anti-radiation agent composed of nano ceria and phenyl silicone rubber, bis-tert-butylperoxycumene, triallyl Vulcanization system composed of cyanurate and zinc oxide, protective system composed of 2-mercaptobenzimidazole and 2,2,4-trimethyl-1,2-dihydroquinoline, composed of vinyl tri(β - a coupling agent composed of methoxyethoxy) silane, a dispersion system composed of stearic acid and Rhine powder A-25, and a softening agent composed of paraffin oil. The raw materials of the above-mentioned cable insulation materials include the following components and contents (parts by weight):

[0031] EPDM 60~100

[0032] P...

Embodiment 2

[0049] The insulation material for radiation-resistant, halogen-free, low-smoke, flame-retardant cables for nuclear power plants includes the following components and contents (parts by weight):

[0050] EPDM 60

[0051] Phenyl silicone rubber 40

[0052] Magnesium Hydroxide 50

[0053] Aluminum hydroxide 100

[0054] Zinc borate 5

[0055] Silica 15

[0056] Ceria 5

[0057] Zinc oxide 3

[0058] Di-tert-butylperoxycumene 1

[0059] Triallyl cyanurate 5

[0060] 2-Mercaptobenzimidazole 1

[0061] 2,2,4-Trimethyl-1,2-dihydroquinoline 4

[0062] Rhine Powder A-25 1

[0063] stearic acid 3

[0064] Vinyltris(β-methoxyethoxy)silane 1

[0065] paraffin oil 5

[0066] First, raw materials other than magnesium hydroxide, aluminum hydroxide, vinyl tris(β-methoxyethoxy)silane, bis-tert-butylperoxycumene and paraffin oil are sent into the internal mixer according to the proportion, and mixed 2~4min, when the temperature rises to 85~95℃, add magnesium hydroxide, aluminum h...

Embodiment 3

[0068] The insulation material for radiation-resistant, halogen-free, low-smoke, flame-retardant cables for nuclear power plants includes the following components and contents (parts by weight):

[0069] EPDM 90

[0070] Phenyl silicone rubber 10

[0071] Magnesium Hydroxide 100

[0072] Aluminum hydroxide 50

[0073] Zinc borate 20

[0074] Silica 5

[0075] Ceria 20

[0076] Zinc oxide 8

[0077] Di-tert-butylperoxycumene 5

[0078] Triallyl cyanurate 1

[0079] 2-Mercaptobenzimidazole 4

[0080] 2,2,4-Trimethyl-1,2-dihydroquinoline 1

[0081] Rhine Powder A-25 5

[0082] stearic acid 1

[0083] Vinyltris(β-methoxyethoxy)silane 5

[0084] paraffin oil 15

[0085] First, raw materials other than magnesium hydroxide, aluminum hydroxide, vinyl tris(β-methoxyethoxy)silane, bis-tert-butylperoxycumene and paraffin oil are sent into the internal mixer according to the proportion, and mixed 2~4min, when the temperature rises to 85~95℃, add magnesium hydroxide, aluminum...

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Abstract

The invention discloses a radiation-resistant halogen-free low smoke flame retardant insulating material for cables of nuclear power plants and a preparation method. The radiation-resistant halogen-free low smoke flame retardant insulating material is prepared from the following raw materials: ethylene propylene diene rubber, phenyl siloxane rubber, magnesium hydrate, aluminium hydroxide, zinc borate, white carbon black, cerium dioxide, zinc oxide, Bis(tert-butyldioxyisopropyl)benzene, tri allyl cyanurate, 2-mercaptobenzimidazole, 2,2,4-trimethyl-1,2-dihydroquinoline, Aflux A-25, stearic acid, vinyl tris(beta-methoxyethoxy) silane, and paraffin oil by heating and mixing. The formulation and the mixture ratio are scientific and reasonable, and the process is advanced. The prepared insulating material has good radiation resistance, excellent mechanical property, good electrical property and long service life, and is a good radiation-resistant halogen-free low smoke flame retardant insulating material for manufacturing the cables of the nuclear power plants.

Description

technical field [0001] The invention relates to a cable insulating material, in particular to a cable insulating material for nuclear power plants, and belongs to the technical field of cables. Background technique [0002] Nuclear power is a safe, clean and reliable energy source. As the "vessel" and "nerve" of the nuclear power plant, the cable line system is an important electrical component of the nuclear power plant. It plays a very important role in the normal operation and safe shutdown of the nuclear power plant, and is also a key element of safety. Due to the harsh environmental conditions in the place where it is used, the safety requirements are very high, that is, it is required not only to have the general characteristics of ordinary cables, but also to have low smoke, halogen-free, flame-retardant and other characteristics, and to have specific environmental resistance, such as Radiation resistance, LOCA (Loss of Water Accident) resistance, etc. Due to the li...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L83/04C08K13/02C08K3/22C08K3/38H01B3/28B29B7/28
Inventor 王巧娥房权生庞玉春王永梁彤祥郭文利
Owner BAOSHENG SCI & TECH INNOVATION
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