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1E-grade K1-type low-smoke halogen-free vulcanized crosslinked cable shield material for AP1000 nuclear power station and preparation method of cable shield material

A cable sheath material, vulcanization and cross-linking technology, which is applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of lack of preparation methods for low-smoke and halogen-free vulcanization cross-linked cable sheath materials, affecting the mechanical properties of materials, difficulties, etc.

Active Publication Date: 2015-04-15
上海至正新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the sheath material obtained by this method has a high oxygen index, it will seriously affect the mechanical properties of the material, and it is still difficult to burn through a single vertical
[0004] In summary, there is a lack of 1E-class K1 low-smoke halogen-free vulcanized cross-linked cable sheathing material and its preparation method that can meet the stringent requirements of AP1000 nuclear power plants

Method used

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  • 1E-grade K1-type low-smoke halogen-free vulcanized crosslinked cable shield material for AP1000 nuclear power station and preparation method of cable shield material
  • 1E-grade K1-type low-smoke halogen-free vulcanized crosslinked cable shield material for AP1000 nuclear power station and preparation method of cable shield material
  • 1E-grade K1-type low-smoke halogen-free vulcanized crosslinked cable shield material for AP1000 nuclear power station and preparation method of cable shield material

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preparation example Construction

[0052] The invention relates to a 1E-class K1 low-smoke halogen-free vulcanized cross-linked cable sheath material for AP1000 nuclear power plants and a preparation method thereof, belonging to the technical field of new cable materials. The characteristic is: the formula and preparation method of 1E grade K1 low-smoke halogen-free vulcanized cross-linked cable sheath material for AP1000 nuclear power plant include the following components and parts by weight, 100 parts of base resin, 70-130 parts of flame retardant, compatibilizer 5-15 parts, 5-30 parts of anti-radiation agent, 2-8 parts of lubricant, 3-15 parts of anti-aging agent, 2-8 parts of coupling agent, 3-5 parts of cross-linking agent. The invention solves the problem that the long-term service life of existing cable materials is less than 60 years under the condition of operating temperature of 90°C in the nuclear power plant environment. This material has high radiation resistance and high flame retardancy, and the c...

Embodiment approach

[0100] The above-mentioned technical purpose of the present invention can be implemented through the following technical scheme: AP1000 nuclear power plant uses 1E class K1 low-smoke halogen-free vulcanized cross-linked cable sheathing material, which is characterized in that the names of the components and the dosage of the components are as follows:

[0101]

[0102]

[0103] The base resin is selected from: a mixture of ethylene-vinyl acetate copolymer (EVA), ethylene-butyl acrylate (EBA), and linear ultra-density polyethylene (VLDPE), and the base resin must contain ethylene-butyl acrylate . Ethylene-butyl acrylate has excellent heat resistance and radiation resistance, which can significantly improve the service life of the material. Linear ultra-density polyethylene (VLDPE) has high tensile strength, excellent flexibility, chemical resistance and radiation resistance. Ethylene-vinyl acetate (EVA) has stable chemical properties, radiation resistance, and excellent ...

specific Embodiment

[0124] Unless otherwise specified, various raw materials of the present invention can be obtained commercially; or prepared according to conventional methods in the art. Unless otherwise defined or stated, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described can be applied to the method of the present invention.

[0125] Other aspects of the invention will be apparent to those skilled in the art from the disclosure herein.

[0126] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods not indicating specific conditions in the following examples are usually measured according to national standards. If there is no c...

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Abstract

The invention provides a 1E-grade K1-type low-smoke halogen-free vulcanized crosslinked cable shield material for an AP1000 nuclear power station, and a preparation method of the cable shield material. The cable shield material comprises the following components in parts by weight: 100 parts of basic resin, 70-130 parts of a fire retardant, 5-15 parts of a compatilizer, 5-30 parts of an antiradiation agent, 2-8 parts of a lubricant, 3-15 parts of an antioxygen, 2-8 parts of a coupling agent, and 3-5 parts of a cross-linking agent, wherein the basic resin is chosen from a mixture of an EVA (ethylene-vinyl acetate) copolymer, an EBA (ethylene-butyl acrylate) copolymer and linear VLDPE ( very low density polyethylene).

Description

technical field [0001] The invention relates to a low-smoke halogen-free cable sheathing material for AP1000 nuclear power plants, in particular to a 1E-class K1 low-smoke halogen-free vulcanized cross-linked cable sheathing material for AP1000 nuclear power plants and a preparation method thereof. Background technique [0002] AP1000 is a double-loop 1000MW pressurized water reactor designed and developed by Westinghouse Corporation. Based on the traditional pressurized water reactor nuclear power technology, AP1000 adopts a "passive" safety system with a design life of up to 60 years. Level 1E is the safety level of reactors and electrical systems and equipment in AP1000 nuclear power plants. Level 1E requires the system to be able to complete emergency shutdown of the reactor; isolation of containment, emergency cooling of the core, export of residual heat from the reactor, export of heat from the containment of the reactor, and prevention of discharge of radioactive sub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L51/00C08L51/06C08K13/02C08K3/22C08K3/36C08K3/38C08K5/18C08K5/14B29C47/92H01B7/17B29C48/92
CPCB29C47/0011B29C47/92B29C48/04B29C48/40
Inventor 梁家荣施冬梅侯海良翁文彪程金星侯万里
Owner 上海至正新材料有限公司
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