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Class 1e K1 heat-shrinkable electric stress control tube for nuclear power plant and preparation method thereof

A nuclear power plant, heat shrinking technology, applied in applications, household appliances, tubular objects, etc., can solve the problems of heat aging resistance and radiation resistance that cannot meet the overall technical requirements, and achieve excellent high temperature resistance

Active Publication Date: 2017-11-10
CHANGYUAN ELECTRONICS DONGGUAN +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, the material of heat-shrinkable electrical stress control tubes in existing heat-shrinkable cable accessories (mainly 6kV, 10kV, 20kV, and 35kV and other medium and high-voltage voltage levels) is mainly made of CPE (chlorinated polyethylene), because CPE The material properties of the material determine that its heat aging resistance, radiation resistance and other properties cannot meet the general technical requirements of 1E-class K1 medium and high-voltage heat-shrinkable cable accessories for nuclear power plants

Method used

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  • Class 1e K1 heat-shrinkable electric stress control tube for nuclear power plant and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0055] Weigh 100 parts of crystalline EPDM rubber (NORDEL™ IP 4820P of DOW Chemical Company), 0 parts of polyethylene, 30 parts of modified barium titanate (T304 of Shanghai Dianyang Company), and high wear-resistant carbon black (Carbon Black) Bote N330) 20 parts, sensitizer TAIC (Shanghai Fangruida) 3 parts, anti-aging agent N-phenyl-α-naphthylamine (Guohai Biology) 2 parts, anti-radiation agent silicon nitride (Dandong Chemical Research Institute) Institute) 5 parts, lubricant stearic acid (commercially available) 4 parts.

[0056] The above materials are mixed and granulated by an internal mixer, stirred by a mixer for 30 minutes, then mixed and granulated by a parallel twin-screw extruder, extruded into a pipe by a single-screw extruder, and the pipe is passed through a cobalt 60 or electron accelerator 80KGy radiation cross-linking, the tube after radiation cross-linking expands 4 times at a temperature of 120°C to obtain a heat-shrinkable electrical stress control tube....

preparation Embodiment 2

[0058] Weigh 70 parts of crystalline EPDM rubber (NORDEL™ IP 4760P of DOW Chemical Company), 30 parts of polyethylene (LDPE 1I2A of Yanshan Petrochemical Company), 10 parts of modified barium titanate (T304 of Shanghai Dian Yang Company), 10 parts of high 40 parts of wear-resistant carbon black (composed of 15 parts of Cabot N550 and 25 parts of Cabot N220), 2 parts of sensitizer TMPTMA (US Sartomer SR350), 4 parts of anti-aging agent (composed of N-phenyl-α -Naphthylamine (Guohai Biology) 2 parts, N-phenyl-β-naphthylamine (Guohai Biology) 2 parts), anti-radiation agent boron carbide (Mudanjiang Qianjin) 10 parts, lubricant zinc stearate ( Commercially available) 2 parts.

[0059] The above materials are mixed and granulated by an internal mixer, stirred by a mixer for 30 minutes, then mixed and granulated by a parallel twin-screw extruder, extruded into a pipe by a single-screw extruder, and the pipe is passed through a cobalt 60 or electron accelerator 180KGy radiation cros...

preparation Embodiment 3

[0061] Weigh 85 parts of crystalline EPDM rubber (NORDEL™ IP 3745P of DOW Chemical Company), 15 parts of polyethylene (MDPE 2310 of Borealis), 20 parts of modified barium titanate (Shanghai Dianyang Company), high-resistant Mill carbon black (Cabot N550) 25 parts, sensitizer TMPTA (US Sartomer SR351) 5 parts, anti-aging agent N-phenyl-α-naphthylamine (National Sea Bio) 4 parts, anti-radiation agent nitrogen Silicone (Dandong Chemical Research Institute) 5 parts, lubricant calcium stearate (commercially available) 3 parts.

[0062] The above materials are mixed and granulated by an internal mixer, stirred by a mixer for 30 minutes, then mixed and granulated by a parallel twin-screw extruder, extruded into a pipe by a single-screw extruder, and the pipe is passed through a cobalt 60 or electron accelerator 140KGy radiation cross-linking, the radiation cross-linked pipe expands twice at a temperature of 150°C to obtain a heat-shrinkable electrical stress control pipe.

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Abstract

The invention provides a 1E-grade K1 type thermal shrinkage electrical stress control tube which is prepared from, by weight, 70-100 parts of crystalline ethylene-propylene-diene monomer, 0-30 parts of polyethylene, 10-30 parts of modified barium titanate, 20-40 parts of high-abrasion-resistant carbon black, 2-5 parts of a sensitizing agent, 2-4 parts of an anti-aging agent, 5-10 parts of a radiation-hardened agent and 2-4 parts of a lubricating agent. The 1E-grade K1 type thermal shrinkage electrical stress control tube for the nuclear power station is resistant to thermal aging, resistant to radiation and good in electric stress control effect and can be used as a thermal shrinkage electrical stress control material in a radiation-resistant thermal shrinkage cable accessory for the 1E-grade K1 type nuclear power station.

Description

technical field [0001] The invention relates to a heat-shrinkable electric stress control tube for nuclear power plants and a preparation method thereof. Background technique [0002] Nuclear energy has become an important source of energy for human use, and nuclear power generation is an important part of the power industry. Since nuclear power will not cause air pollution, under the situation that people pay more and more attention to the global warming effect and climate change, actively promoting the construction of nuclear power is an important policy of my country's energy construction. It is of great significance to improve my country's comprehensive economic strength, industrial technology level and international status in terms of energy demand. [0003] The 2007 "National Nuclear Power Development Special Plan (2005-2020)" mentioned that by 2020, the installed capacity of nuclear power operation will reach 40 million kilowatts, and 18 million kilowatts of projects ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/06C08K13/06C08K9/00C08K3/24C08K3/04C08K5/18C08K3/38C08K3/34B29D23/00
CPCB29D23/001C08K3/04C08K3/24C08K3/34C08K5/18C08K9/00C08K13/06C08K2201/014C08L23/16C08L2201/08C08L2203/20C08L2312/06C08L23/06C08K3/38
Inventor 刘军吴松金赵成刚曾志安鲁尔军许兰杭
Owner CHANGYUAN ELECTRONICS DONGGUAN