Irradiation-resistant graphene coatings with enhanced corrosion resistance and thermal conductivity

A graphene and heat conduction technology, applied in the direction of graphene, coating, covering/external coating, etc., can solve problems such as gaps, increase temporary storage, increase temporary storage capacity and safety, increase corrosion resistance and The effect of thermal conductivity

Active Publication Date: 2019-06-18
CHINA INST FOR RADIATION PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, adding graphene as a coating on the surface of the container to form a graphene coating is still a blank in domestic research in this field.

Method used

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  • Irradiation-resistant graphene coatings with enhanced corrosion resistance and thermal conductivity
  • Irradiation-resistant graphene coatings with enhanced corrosion resistance and thermal conductivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The radiation-resistant graphene coating with enhanced corrosion resistance and thermal conductivity according to the present invention, such as figure 2 As shown, the graphene coating 1 has a thickness of 1-10 μm (for example, 1 μm, 5 μm, or 10 μm), and is coated on the outer surface of the high-level waste glass solidified body container 2, the high-level waste glass solidified body container It is an austenitic stainless steel material.

[0035] The thickness of the high-level waste glass solidified body container is 2-10mm (for example: 2mm, 6mm or 10mm).

Embodiment 2

[0037] According to the present invention, a high-level radioactive waste glass solidified body container with a radiation-resistant graphene coating that enhances corrosion resistance and thermal conductivity is coated with the outer surface of the high-level waste glass solidified body container 2 Graphene coating 1, the thickness of the graphene coating is 1-10 μm (for example: 1 μm, 5 μm or 10 μm), and the high-level waste glass solidified body container is made of austenitic stainless steel.

[0038] According to the present invention, a high-level radioactive waste glass solidified body container with a radiation-resistant graphene coating that enhances corrosion resistance and thermal conductivity has a thickness of 2~ 10mm (for example: 2mm, 6mm or 10mm).

Embodiment 3

[0040] The method for preparing any radiation-resistant graphene coating with enhanced corrosion resistance and thermal conductivity described in embodiment 1 or embodiment 2 includes the following steps:

[0041] (a) A certain amount of graphene oxide is added to a certain amount of aqueous solution, and the graphene is uniformly dispersed in the aqueous system through radiation oxidation treatment and part of the graphene oxide is reduced to form a graphene dispersion; the radiation oxidation treatment In order to irradiate gamma rays at a dose of 800Gy / h, the irradiation time is 50 hours. The specific mass ratio of the graphene oxide and water is 1:8×10 6 .

[0042] (b) Surface treatment (for example: sanding, sandblasting, or electroplating) on ​​the outer surface of the glass solidified container containing high-level radioactive waste to remove the oxide layer on the surface of austenitic stainless steel;

[0043] (c) coating the graphene oxide obtained in step (a) on the surf...

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Abstract

The invention provides an irradiation resisting graphene coating with enhanced corrosion resistance and thermal conductivity. The graphene coating treatment technology is adopted for a high-level waste glass form container. The thickness of the graphene coating is 1-10 [mu]m and covers the outer surface of the high-level waste glass form container. The high-level waste glass form container is made of an Austenitic stainless steel material and is 2-10 mm thick. According to the irradiation resisting graphene coating with the enhanced corrosion resistance and thermal conductivity, through the excellent physical and chemical properties of graphene, the corrosion resistance of the processed container can be improved, and decay heat of high-level waste glass forms can be guided out in time, so that the performance of the container is improved, the service life of the container is prolonged, and a temporary library is additionally arranged.

Description

Technical field [0001] The invention relates to a graphene coating treatment technology for a container containing a glass solidified body of high-level radioactive waste, which improves the corrosion resistance and thermal conductivity of the container. Background technique [0002] The safe disposal of high-level radioactive waste is one of the outstanding issues facing the development of nuclear energy and the utilization of nuclear technology, and it is also the key and difficult issue of radioactive waste management. Geological disposal is considered to be the most promising disposal plan. “Geological disposal” refers to the disposal of solid radioactive waste in facilities in stable underground geological structures (usually hundreds of meters or more below the surface) to make radioactive waste Long-term effective isolation from the biosphere. It takes the containment and isolation of radionuclides as the core content, uses multiple barriers (including waste bodies, packa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/14B05D7/24B05D3/00B65D25/34C01B32/184
CPCB05D3/002B05D7/14B05D7/24B05D2202/15B65D25/34
Inventor 冯文东刘伟梁栋杨仲田
Owner CHINA INST FOR RADIATION PROTECTION
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