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Cable insulant for third-generation nuclear power station and preparation method thereof

A cable insulation and nuclear power plant technology, applied in the field of power cables, can solve problems such as unachievable performance and decreased insulation resistance, and achieve the effects of improving original mechanical properties, reducing chain breakage, and excellent quality.

Inactive Publication Date: 2011-07-13
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary low-smoke halogen-free flame-retardant materials have the characteristics of high filling, and the cable is exposed to high humidity for a long time under accident conditions, and the filling material is easy to cause a drop in insulation resistance due to water absorption
Therefore, the performance of the current cable insulation materials cannot meet the high requirements of the third-generation nuclear power plant cable insulation materials, especially the 60-year service life is a technical problem that is difficult to solve for the existing cable insulation materials, but the current third-generation nuclear power plants Established, and there is an urgent need to solve this problem, which requires the advent of cable insulation materials with good performance and a service life of up to 60 years

Method used

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  • Cable insulant for third-generation nuclear power station and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] The main process equipment required for the preparation of the product of the present invention are: internal mixer, rubber filter machine, three-roll page rolling machine, rubber extruder, etc.

[0032] A cable insulation material for third-generation nuclear power plants, its raw material formula components and the weight ratio of each component are:

[0033] The ethylene-propylene rubber copolymer is binary ethylene-propylene rubber-maleic anhydride copolymer: 100 parts;

[0034] Active agent is zinc oxide: 6.5 parts;

[0035] The flame retardant is nano-montmorillonite, aluminum hydroxide and magnesium hydroxide: a total of 115 parts;

[0036] Nano-montmorillonite: 5 parts;

[0037] Aluminum hydroxide: 100 parts;

[0038] Magnesium hydroxide: 10 parts;

[0039] Antioxidants are methylthiolbenzimidazole and zincated diphenylamine: 3.5 parts; among them, methylthiolbenzimidazole: 1.5 parts;

[0040] Zinc-based diphenylamine: 2 parts;

[0041] Stabilizers are met...

Embodiment 2

[0051]The main process equipment required for the preparation of the product of the present invention are: internal mixer, rubber filter machine, three-roll page rolling machine, rubber extruder, etc.

[0052] A cable insulation material for third-generation nuclear power plants, its raw material formula components and the weight ratio of each component are:

[0053] The ethylene-propylene rubber copolymer is binary ethylene-propylene rubber-maleic anhydride copolymer: 100 parts;

[0054] Active agent is zinc oxide: 8 parts;

[0055] The flame retardant is nano-montmorillonite, aluminum hydroxide and magnesium hydroxide: a total of 140 parts;

[0056] Nano-montmorillonite: 5 parts;

[0057] Aluminum hydroxide: 90 parts;

[0058] Magnesium hydroxide: 45 parts;

[0059] Antioxidants are two kinds of methyl mercaptan benzimidazole and zinc-based diphenylamine: 3 parts;

[0060] Methylthiolbenzimidazole: 1.5 parts;

[0061] Zinc-based diphenylamine: 1.5 parts;

[0062] Stab...

Embodiment 3

[0073] The main process equipment needed for the preparation of the product of the present invention are: internal mixer, rubber filter machine, three-roll page rolling machine, rubber extrusion machine, etc.

[0074] A cable insulation material for third-generation nuclear power plants, its raw material formula components and the weight ratio of each component are:

[0075] The ethylene-propylene rubber copolymer is binary ethylene-propylene rubber-maleic anhydride copolymer: 100 parts;

[0076] Active agent is zinc oxide: 6.5 parts;

[0077] Flame retardants are three kinds of nano-montmorillonite, aluminum hydroxide and magnesium hydroxide: a total of 90 parts;

[0078] Nano-montmorillonite: 5 parts;

[0079] Aluminum hydroxide: 80 parts;

[0080] Magnesium hydroxide: 5 parts;

[0081] Antioxidants are two kinds of methyl mercaptan benzimidazole and zinc-based diphenylamine: 4 parts;

[0082] Methylthiolbenzimidazole: 2 parts;

[0083] Zinc-based diphenylamine: 2 part...

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Abstract

The invention relates to a cable insulant for a third-generation nuclear power station and a preparation method thereof. The cable insulant comprises the following raw materials in parts by weight: 100 parts of ethylene propylene rubber copolymer, 5-10 parts of activator, 90-140 parts of fire retardant, 2-4 parts of antioxidant, 2-4 parts of stabilizer, 4-8 parts of lubricant, 1.5-3 parts of coupling agent, 2-4 parts of cross-linking agent and 1-1.8 parts of cross-linking assistant, wherein the ethylene propylene rubber copolymer is a graft copolymer of ethylene-propylene rubber and maleic anhydride; and the fire retardant is a composition of nano-montmorillonite and hydroxide. The preparation method comprises the following steps: mixing the ethylene propylene rubber copolymer, the antioxidant, the lubricant, the stabilizer, the activator, the coupling agent and the fire retardant; then carrying out rubber filtering on the mixed materials; adding the cross-linking agent and the cross-linking assistant for mixing, and forming sheets through a three-roller rolling machine; and finally extruding and processing the sheet materials in a rubber extruding machine to obtain the cable insulant product for the third-generation nuclear power station. The cable insulant has good property and long service life more than 60 years.

Description

technical field [0001] The invention relates to a cable insulating material, in particular to a cable insulating material for third-generation nuclear power plants and a preparation method thereof. The invention belongs to the technical field of power cables and is suitable for use in third-generation nuclear power plants that have special requirements for cable insulating materials. Background technique [0002] At present, China's nuclear power construction has entered the peak period of development. The third-generation nuclear power plant construction project representing advanced nuclear power technology has been approved in China. According to the requirements of the third-generation nuclear power plant for cable insulation materials, cable insulation materials must not only have 60 years of heat resistance Aging performance, but also high-dose radiation resistance, at the same time, the cable insulation material has high temperature resistance, acid and alkali resista...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08K13/02C08K3/34C08K3/22C08K5/37C08K5/18C08K5/14H01B3/28
Inventor 王松明朱冬杰李斌梁福才凌国桢祝军曾庆涛陆俊金华东王丽萍孙彬
Owner JIANGSUSNGSHANG CABLE GROUP
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