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Insulation material for nuclear power plant cable

A nuclear power plant cable and insulating material technology, which is applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of high cost, long-term heat aging resistance, poor performance such as tensile strength, complex process, etc., and achieve carbonaceous residue Effect of reducing and inhibiting damage and improving long-term aging resistance

Active Publication Date: 2009-06-17
临海市亚东特种电缆料厂
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AI Technical Summary

Problems solved by technology

Chemical cross-linking needs to be carried out under high temperature and high pressure conditions, which leads to complex process and high cost when the insulating material forms the insulating layer of nuclear power plant cables; and the formed insulating layer has been tested for long-term thermal aging resistance, tensile strength, etc poor performance

Method used

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  • Insulation material for nuclear power plant cable

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Effect test

Embodiment 1

[0029] The preparation method of the insulating material for the cables of this nuclear power plant is as follows: select the components in parts by weight as in Example 1 of Table 1 and put them into the mixer and mix them thoroughly for 10 to 15 minutes, then put them into a double-stage twin-screw extrusion granulator ( Nanjing Chengmeng CM-80 / 150 type) is extruded and granulated to make insulating materials for cables in this nuclear power plant.

[0030] Table 1: Components (parts by weight) of insulating materials for cables in this nuclear power plant

[0031]

[0032] Wherein the base material described in embodiment 1 is made up of the following components by weight; Ethylene-methacrylic acid copolymer: 100 parts. The flame retardant is composed of the following components by weight: aluminum hydroxide: 110 parts. The antioxidant is composed of the following components by weight; primary antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate: 4 parts...

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Abstract

The invention provides an insulation material used for cables in a nuclear power station, which belongs to a novel cable material technical field, and solves the problems existing in the insulation material used for cables in the present nuclear power station, that is, complex manufacturing technology, high cost, poor performance in long-term heat aging resistance and tensile strength, and the like. The insulation material used for cables in the nuclear power station comprises the following component according to a weight ratio: a 100 proportion of base material, 100-200 proportion of flame retardant, 2-8 proportion of antioxidant, 2-20 proportion of anti-irradiation agent, and 1-10 proportion of crosslinking sensitizer. The insulation material used for cables in the nuclear power station has the advantages of low production cost, good long-term heat aging resistance, strong tensile strength, stable irradiation and electrical performance, good flame retardancy, halogen free, and low smoke and toxicity.

Description

technical field [0001] The invention relates to an insulating material for cables, in particular to a radiation cross-linkable insulating material for nuclear power plant cables; it belongs to the technical field of new cable materials. Background technique [0002] Nuclear power plant cables require cable insulation materials to have excellent long-term thermal aging resistance, radiation resistance, stable electrical performance, good flame retardancy, halogen-free, low-smoke, and low-toxicity. At present, the base materials of commonly used cable insulation materials are polyethylene, cross-linked polyolefin, ethylene-propylene rubber and other materials. Under long-term heat aging and irradiation, the chemical bonds between molecules will be broken, and active free radicals or active ions will be generated, and the following chemical reactions will further occur: active free radicals or active ions trigger the crosslinking of macromolecular chains Reaction, active free ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K13/02C08K5/134C08K5/372C08K5/56C08K3/38C08K5/3492C08K5/103H01B3/44
Inventor 周才辉
Owner 临海市亚东特种电缆料厂
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