CN-117659820-B - Shielding coating for floating nuclear power platform and preparation method and application thereof

Abstract

The application relates to a shielding coating for a floating nuclear power platform, and a preparation method and application thereof. The shielding coating comprises, by mass, 200-250 parts of bisphenol monomer, 80-120 parts of epoxy monomer, 40-50 parts of inorganic base, 80-120 parts of neutron shielding agent, 250-500 parts of gamma ray shielding agent and 350-450 parts of water, wherein the mass ratio of the bisphenol monomer to the epoxy monomer is (2.0-2.5): 1. The preparation method comprises the steps of mixing the components of the preparation raw materials to obtain a mixture, and heating the mixture to polymerize bisphenol monomers and epoxy monomers.

Inventors

• LIU FENG
• ZHAN JIE
• JIANG DANFENG
• LI YULONG
• LIN YOUQI
• KANG ZHENG

Assignees

• 中广核研究院有限公司

Dates

Publication Date

20260512

Application Date

20231122

Claims (10)

1. 1. The preparation method of the shielding coating for the floating nuclear power platform is characterized by comprising the following raw materials in parts by mass: 200-250 parts of bisphenol monomer, 80-120 Parts of epoxy monomer, 40-50 Parts of inorganic alkali, 80-120 Parts of neutron shielding agent, 250-500 Parts of gamma-ray shielding agent 350-450 Parts of water; the mass ratio of the bisphenol monomer to the epoxy monomer is (2.0-2.5): 1; The neutron shielding agent comprises gadolinium methacrylate; The gamma ray shielding agent comprises lead acetate; The mass ratio of the neutron shielding agent to the gamma ray shielding agent is (0.2-0.3): 1; the preparation method comprises the following steps: The components of the preparation raw materials are mixed to obtain a mixture, and the mixture is heated to polymerize the bisphenol monomer and the epoxy monomer.
2. 2. The method for preparing the shielding coating according to claim 1, wherein the raw materials for preparing the shielding coating comprise the following components in parts by mass: 220-240 parts of bisphenol monomer, 90-115 Parts of epoxy monomer, 40-50 Parts of inorganic alkali, 88-115 Parts of neutron shielding agent, 300-450 Parts of gamma ray shielding agent 350-450 Parts of water.
3. 3. The method for producing a shielding paint according to claim 1, wherein the production raw materials satisfy at least one of the following (1) to (3): (1) The bisphenol monomer comprises at least one of bisphenol A, bisphenol F and bisphenol S; (2) The epoxy monomer comprises at least one of epichlorohydrin, methyl epichlorohydrin and epoxypropanol; (3) The inorganic base includes sodium hydroxide.
4. 4. The method for producing a shielding paint according to any one of claims 1 to 3, wherein the mass ratio of the bisphenol monomer to the epoxy monomer is (2.2 to 2.4): 1.
5. 5. A method of preparing a barrier coating as claimed in any one of claims 1 to 3, wherein the step of mixing the components of the preparation raw materials to obtain a mixture comprises: first mixing the bisphenol monomer, the neutron shielding agent, the gamma ray shielding agent, the inorganic base and the water to prepare a premix; Adding the epoxy monomer to the premix for second mixing to obtain the mixture.
6. 6. The method for producing a shielding paint according to claim 5, wherein the method for producing the shielding paint satisfies at least one of the following (4) to (6): (4) The temperature of the first mixing is 70-75 ℃; (5) The temperature of the second mixing is 80-90 ℃; (6) And (3) reducing the temperature of the premix to 45-50 ℃ and then adding the epoxy monomer.
7. 7. A shielding paint for a floating nuclear power platform, characterized in that the shielding paint is prepared by the preparation method according to any one of claims 1-6.
8. 8. The application method of the shielding paint for the floating nuclear power platform is characterized by comprising the following steps of: Mixing the shielding coating of claim 7 with a curing agent to prepare a coating; And coating the coating on the area to be filled of the substrate.
9. 9. The method of using a shielding paint according to claim 8, wherein the method of using satisfies at least one of the following (7) to (9): (7) The volume ratio of the shielding coating to the curing agent is (2.0-4.0): 1; (8) The curing agent comprises at least one of polyetheramine and aromatic amine; (9) The substrate includes at least one of a tungsten boron polyethylene plate, a lead boron polyethylene plate, and a boron steel plate.
10. 10. A shielding product for a floating nuclear power platform, comprising a substrate and a shielding coating arranged on the substrate, wherein the shielding coating is prepared from the raw materials of the shielding coating comprising the shielding coating as set forth in claim 7.

Description

Shielding coating for floating nuclear power platform and preparation method and application thereof Technical Field The application relates to the technical field of nuclear power, in particular to a shielding coating for a floating nuclear power platform, and a preparation method and application thereof. Background The floating nuclear power platform is a novel small nuclear power facility for carrying a nuclear reactor on a ship, has the advantages of good maneuverability, flexibility in heat supply and power supply and the like, and provides a good solution for the development of ocean resources and island energy sources. However, the nuclear reactor and the related piping system of the floating nuclear power platform are mounted in a cabin constructed by a baseplate, and the baseplate cannot be too heavy, so that the floating nuclear power platform cannot be constructed by adopting a concrete plate with a radiation shielding effect for a land nuclear power station. And the floating nuclear power platform has a compact structure, and the nuclear reactor is closer to a cabin where personnel move, so that the floating nuclear power platform not only needs to shield neutron rays, but also needs to shield secondary gamma rays generated in the neutron shielding process, thereby comprehensively protecting personnel from radiation. The base plate that floating nuclear power platform adopted includes materials such as polyethylene, boron-containing polyethylene, boron steel and plumbous boron polyethylene, lays the base plate around nuclear reactor cabin or the cabin that needs shielding through the mode of staggered joint concatenation, can reach certain ray shielding effect. However, gaps can appear in the mounting process of the base plate, and the gaps are gradually enlarged along with the floating of the ship body, so that the radiation dose leaked from the gaps is large, and serious radiation damage can be caused to personnel, equipment and environment. Therefore, how to provide a shielding coating to reduce leakage radiation in the substrate gap area of the floating nuclear power platform and enhance the overall radiation protection effect of the cabin becomes a technical problem to be solved. Disclosure of Invention Based on this, it is necessary to provide a shielding coating capable of reducing leakage radiation in the substrate gap region of a floating nuclear power platform and enhancing the overall radiation protection effect of the cabin, and a preparation method and application thereof. The application provides a preparation method of a shielding coating for a floating nuclear power platform, which comprises the following raw materials in parts by mass: the mass ratio of the bisphenol monomer to the epoxy monomer is (2.0-2.5): 1; the preparation method comprises the following steps: The components of the preparation raw materials are mixed to obtain a mixture, and the mixture is heated to polymerize the bisphenol monomer and the epoxy monomer. The preparation method of the shielding coating adopts bisphenol monomer, epoxy monomer, inorganic alkali, neutron shielding agent, gamma ray shielding agent and water with specific parts by weight as raw materials, wherein the bisphenol monomer and the epoxy monomer can be subjected to polymerization reaction under the action of the inorganic alkali to generate epoxy resin, and the fluidity of the epoxy resin can be improved by regulating the mass ratio of the bisphenol monomer to the epoxy monomer, so that the epoxy resin can be uniformly dispersed in the water, and meanwhile, the neutron shielding agent and the gamma ray shielding agent can be dispersed in the water, so that the shielding coating with better dispersibility and fluidity of each component can be obtained. Furthermore, the neutron shielding agent can reduce neutron radiation, the gamma ray shielding agent can reduce secondary gamma rays generated by shielding neutron rays, and the neutron rays and the gamma rays can be shielded more effectively by adjusting and controlling the mass parts of the neutron shielding agent and the gamma ray shielding agent to enable the shielding agents to cooperate. Therefore, the shielding coating can be used for filling a gap area of a shielding substrate in a floating nuclear power platform, and can flow to the gap area uniformly during use, so that the dispersibility of epoxy resin, neutron shielding agent and gamma ray shielding agent is improved, the leakage radiation of the gap area is effectively reduced, and the integral radiation protection effect of a cabin of the floating nuclear power platform is enhanced. Furthermore, when in use, the shielding coating has certain flexibility after being solidified, so that the shielding coating can still play an effective ray shielding role when the floating nuclear power platform floats. In addition, the preparation method is simple and easy to implement, and can be applied on a large scale. In some embodiments,