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Cable insulating material for nuclear power station

A technology for cable insulation and nuclear power plants. It is applied in the direction of insulators, insulated conductors, and insulated cables. It can solve the problems of small molecular weight of polymer materials, performance degradation of cable insulation materials, and loss of polymer properties. Halogen, low smoke, low toxicity, flame retardant performance and long service life

Active Publication Date: 2008-07-16
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These reactions occur in different degrees at different reaction rates, and the final result is that the molecular weight of the polymer material is getting smaller and smaller, and even loses the properties of the polymer, so that the performance of the cable insulation material is greatly reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, a cable insulation material for nuclear power plants, its raw materials include the following components and content by weight:

[0020] EPDM-acrylate copolymer 100 parts

[0021] Aluminum hydroxide 50 90 parts

[0022] Magnesium hydroxide 50-90 parts

[0023] 2 mercaptobenzimidazole 1-3 parts

[0024] Dysprosium oxide 3-10 parts

[0025] Boron nitride 10-20 parts

[0026] Paraffin wax 1-6 parts

[0027] Dicumyl peroxide 3-5 parts

[0028] Zinc oxide 5-8 parts

[0029] The preparation method of the product of the cable insulation material used in the nuclear power plant is: (1), the copolymer of EPDM rubber-acrylic resin is masticated in a banbury mixer for 1-2 minutes. (2) Add aluminum hydroxide, magnesium hydroxide, 2-mercaptobenzimidazole, dysprosium oxide, boron nitride, paraffin wax, zinc oxide, mix for 15 minutes and filter through a rubber filter. (3), adding dicumyl peroxide for mixing and rolling. (4) Into the rubber extrusion machine to ...

Embodiment 2

[0030] Embodiment 2, a cable insulation material for nuclear power plants, its raw materials include the following components and content by weight:

[0031] EPDM-acrylate copolymer 100 parts

[0032] Aluminum hydroxide 50 parts

[0033] Magnesium hydroxide 90 parts

[0034] 1 part of 2-mercaptobenzimidazole

[0035] Dysprosium oxide 3 parts

[0036] Boron nitride 10 parts

[0037] Paraffin wax 1 part

[0038] 3 parts dicumyl peroxide

[0039] Zinc oxide 5 parts

[0040] Its preparation method is identical with embodiment 1.

Embodiment 3

[0041] Embodiment 3, a cable insulation material for nuclear power plants, its raw materials include the following components and content by weight:

[0042] EPDM acrylate copolymer 100 parts

[0043] Aluminum hydroxide 90 parts

[0044] Magnesium hydroxide 50 parts

[0045] 2 mercaptobenzimidazole 3 parts

[0046] Dysprosium oxide 10 parts

[0047] Boron nitride 20 parts

[0048] Paraffin wax 6 parts

[0049] Dicumyl peroxide 5 parts

[0050] Zinc oxide 8 parts

[0051] Its preparation method is identical with embodiment 1.

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Abstract

This invention relates to nuclear station cable insulation materials, which comprises the following formula: EPT rubber-acrylic resin polymer for 100; aluminum hydroxide for 50 to 90; 2-mercaptobenzimidazole for 1 to 3; dysprosium oxide for 3 to 10; boron nitride for 10 to 20; wax for 1 to 6; dicumyl peroxide for 3 to 5; zinc bloom for 5 to 8.

Description

Technical field [0001] The invention relates to a cable insulating material, in particular to a cable insulating material for nuclear power plants. Background technique [0002] Cables used in nuclear power plants require cable insulation materials to have excellent electrical properties, strong radiation resistance, excellent heat aging resistance, excellent humidity and heat resistance, halogen-free, low smoke, low toxicity, good flame retardancy, and long service life. At present, commonly used insulating materials are polyethylene, cross-linked polyolefin and ethylene-propylene rubber. The polymers in the above-mentioned general materials will produce ionization or excitation reactions under the action of irradiation, and the following chemical reactions will further occur: macromolecules are formed by radiation Irradiation-induced cross-linking reactions, irradiation-induced degradation reactions, oxidation reactions, gas products, and others such as isomerization. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/28H01B3/44H01B3/02H01B3/00C08L23/16C08L33/00H01B7/02H01B7/17
Inventor 王松明李斌谈建伟朱冬杰袁杰凌国桢
Owner JIANGSUSNGSHANG CABLE GROUP