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Corrosion-resistant and radiation-resistant polyurea coating for nuclear power station and preparation method thereof

A radiation-resistant, nuclear power plant technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor flexibility, safety and health requirements of human toxic environment, and large volume, so as to reduce hazards and improve protection The effect of unchanged ability and flexibility

Inactive Publication Date: 2021-09-07
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its large size, poor flexibility, and toxicity to the human body, it has been unable to adapt to today's flexible and complex engineering situations and people's requirements for environmental safety and health.

Method used

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  • Corrosion-resistant and radiation-resistant polyurea coating for nuclear power station and preparation method thereof
  • Corrosion-resistant and radiation-resistant polyurea coating for nuclear power station and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This example provides an anti-corrosion and radiation-resistant polyurea coating material used in nuclear power plants. The preparation raw materials and proportions are: A component by mass percentage, Wanhua isocyanate MDI-50 66 parts, Mitsubishi Petrochemical polyurea Butanediol PTMG 29 parts, Qilu Petrochemical 4-methyl-1,3-dioxolan-2-one 5 parts; B component by mass percentage, polyether polyamine Jeffamine D-2000 52 parts, polyether Polyamine Jeffamine T-5000 6 parts, Wanhua 3,5-diethyltoluenediamine E100 24 parts, Wanhua 4,4'-bis-sec-butylaminodiphenylmethane W6200 15 parts, leveling agent BYK-354 1 part, defoamer BYK-066N 0.5 part, wetting and dispersing agent BYK-164 1 part, Dow Corning coupling agent KH-550 0.5 part, BASF antioxidant 1135 0.5 part.

[0028] The preparation method of the polyurea coating material used in this embodiment is as follows:

[0029] (1) Add PTMG to the airtight reaction kettle in parts by mass, then heat the PTMG to 80°C, and dehydr...

Embodiment 2

[0033] This example provides an anti-corrosion and radiation-resistant polyurea coating material used in nuclear power plants. The preparation raw materials and proportions are: A component by mass percentage, Wanhua isocyanate MDI-50 66 parts, Mitsubishi Petrochemical polyurea Butanediol PTMG 29 parts, Qilu Petrochemical 4-methyl-1,3-dioxolan-2-one 5 parts; B component by mass percentage, polyether polyamine Jeffamine D-2000 55 parts, polyether Polyamine Jeffamine T-5000 5 parts, Wanhua 3,5-diethyltoluenediamine E100 26 parts, Wanhua 4,4'-bis-sec-butylaminodiphenylmethane W6200 10 parts, leveling agent BYK-354 1 part, defoamer BYK-066N 0.5 part, wetting and dispersing agent BYK-164 1 part, Dow Corning coupling agent KH-5500.5 part, BASF antioxidant 1135 0.5 part.

[0034] The preparation method of the polyurea coating material used in this embodiment is as follows:

[0035](1) Add PTMG to the airtight reaction kettle in parts by mass, then heat the PTMG to 80°C, and dehydrat...

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Abstract

The invention provides a corrosion-resistant gamma ray irradiation-resistant polyurea coating and a preparation method thereof, and belongs to the crossing field of high polymer material synthesis and nuclear irradiation modification. The material is formed by spraying after mixing an isocyanate semi-prepolymer component A and a component B consisting of amine-terminated polyether, an amine chain extender and an auxiliary agent under high pressure. The component A is prepared by heating and dehydrating 62-68 parts by mass of isocyanate, 27-33 parts by mass of polyether polyol and 2-8 parts by mass of a reactive diluent in a vacuum environment; and the component B is prepared from 55-66 parts by mass of polyether polyamine, 33-42 parts by mass of a liquid amine chain extender and 3-5 parts by mass of an auxiliary agent through mixing, stirring and vacuum dehydration. The gamma-ray resistance of the polyurea material is improved by virtue of the hindered phenol antioxidant. The mechanical property of the polyurea material is improved to different extents after gamma ray irradiation and treatment in different corrosion environments, and the polyurea material is suitable for protection application of equipment such as nuclear power stations.

Description

technical field [0001] The invention belongs to the field of preparation of functional polymer coating materials, in particular to an anti-corrosion and radiation-resistant polyurea coating for nuclear power plants and a preparation method thereof. Background technique [0002] In recent years, nuclear power technology has developed rapidly in my country, and the protective coating system used in nuclear power plants plays an irreplaceable and important role in the construction and use of nuclear power plants. It can protect various metals, concrete components and electronic equipment in nuclear power plants from various corrosive factors in the environment. Most of the nuclear power plants that have been built or are planned to be built in my country are located by the sea, so the buildings or equipment of the nuclear power plant not only bear the damage of internal radioactive rays after irradiation, but also the erosion of various factors such as external ultraviolet rays...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/08C08G18/50
CPCC09D175/02C09D5/08C08G18/5021
Inventor 郭辉李君雅陈玉
Owner SOUTHWEAT UNIV OF SCI & TECH