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Method for preparing coating on inner side of radiation monitoring device

A radiation monitoring and coating technology, which is applied to coatings, reflective/signal coatings, devices for coating liquids on surfaces, etc. The effect of preventing air bubbles and wrinkles, and improving the absorption rate

Inactive Publication Date: 2021-09-21
西安中核核仪器股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the distance between the scintillator and the photomultiplier tube is too close, the effective area of ​​the photomultiplier tube that can receive fluorescence will become smaller, and the accuracy of monitoring will decrease. In actual production, it is best to control the distance between the scintillator and the photomultiplier tube to a certain degree In order to maximize the use of photomultiplier tubes and increase the accuracy of monitoring, however, when there is a certain distance between the scintillator and the photomultiplier tubes, the generated fluorescence will be refracted inside the radiation monitoring device before being captured by the photomultiplier tubes. and reflection, there will be a certain loss, which leads to errors in the monitoring results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment includes the following steps:

[0030] Step 1, sieving the metal oxide powder to obtain a fine powder; the material of the metal oxide powder is magnesium oxide, and the sieving adopts a 100-mesh screen;

[0031] Step 2, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue; the mass ratio of the isoamyl acetate, butyl acetate and fluororubber 246 is 168:420:210;

[0032]Step 3, adding the fine powder obtained in step 1 and the glue obtained in step 2 to a ball mill for ball milling to obtain a precursor solution; the mass ratio of fine powder and glue solution in the precursor solution is 280:798; 40 glass balls with a diameter of 25 mm and 40 glass balls with a diameter of 18 mm are used in the ball milling as the ball milling medium, and the ball milling tank is sealed with paraffin wax in the ball milling, and the ball milling time is 78 hours;

[0033] Step 4, add acetone to the precursor solution obtained in step 3 and stir to ...

Embodiment 2

[0038] This embodiment includes the following steps:

[0039] Step 1, sieving the metal oxide powder to obtain a fine powder; the material of the metal oxide powder is lead oxide; the sieving adopts a 100-mesh screen;

[0040] Step 2, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue; the mass ratio of the isoamyl acetate, butyl acetate and fluororubber 246 is 180:410:220;

[0041] Step 3, adding the fine powder obtained in step 1 and the glue obtained in step 2 to a ball mill for ball milling to obtain a precursor solution; the mass ratio of fine powder and glue solution in the precursor solution is 290:790; 35 glass balls with a diameter of 25 mm and 45 glass balls with a diameter of 18 mm are used in the ball milling as the ball milling medium, and the ball milling tank is sealed with paraffin wax in the ball milling, and the ball milling time is 76 hours;

[0042] Step 4, add acetone to the precursor solution obtained in step 3 and stir to obtain a...

Embodiment 3

[0047] This embodiment includes the following steps:

[0048] Step 1. Sieving the metal oxide powder to obtain a fine powder; the material of the metal oxide powder is magnesium oxide; the sieving adopts a 100-mesh screen;

[0049] Step 2, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue; the mass ratio of the isopentyl acetate, butyl acetate and fluororubber 246 is 160:430:200;

[0050] Step 3, adding the fine powder obtained in step 1 and the glue obtained in step 2 to a ball mill for ball milling to obtain a precursor solution; the mass ratio of fine powder and glue solution in the precursor solution is 270:810; In the ball milling, 38 glass balls with a diameter of 25 mm and 43 glass balls with a diameter of 18 mm are used as the ball milling medium, and the ball milling tank is sealed with paraffin wax in the ball milling, and the ball milling time is 74 hours;

[0051] Step 4, add acetone to the precursor solution obtained in step 3 and stir to ...

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Abstract

The invention discloses a method for preparing a coating on the inner side of a radiation monitoring device. The method comprises the following steps: 1, sieving metal oxide powder; 2, mixing isoamyl acetate, butyl acetate and fluororubber 246; 3, carrying out ball milling on the fine powder and the glue solution; 4, adding acetone into a precursor solution, stirring and filtering; 5, cleaning the inner side of the radiation monitoring device; and 6, spraying a coating liquid on the inner side of the radiation monitoring device to obtain a coating on the inner side of the radiation monitoring device. Isoamyl acetate and butyl acetate are adopted as solvents to be mixed with fluororubber 246 to form a glue solution, metal oxide powder is added into the glue solution, a diffuse reflection coating with high thermal conductivity and radiation resistance is formed on the inner side of the radiation monitoring device through dilution and spraying, and the diffuse reflection coating has good light color consistency, so that more fluorescence generated by a scintillator is collected by a photomultiplier, and the luminous efficiency is improved, and thus, the monitoring efficiency and accuracy of the radiation monitoring device are further improved.

Description

technical field [0001] The invention belongs to the technical field of radiation monitoring devices, and in particular relates to a method for preparing a coating inside a radiation monitoring device. Background technique [0002] At present, my country is vigorously developing nuclear energy. With the establishment of nuclear power plants, nuclear reactors, and the wide application of radioactive isotopes, the degree of concern about the impact of nuclear radiation on the living environment and personal health is also gradually increasing. When nuclear technology is widely used, the nuclei of radioactive isotopes are unstable, and high-energy radioactive particles will be emitted during the decay process. These radioactive particles can cause ionization and excitation when they act on substances, and will cause harm to the human body and the surrounding environment. In recent years, with the continuous development of the nuclear energy industry, the market demand for nuclea...

Claims

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Application Information

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IPC IPC(8): B05D1/02B05D1/36B05D5/00C09D127/12C09D5/33C09D7/20C09D7/61
CPCB05D1/02B05D1/36B05D7/58B05D5/00C09D127/12C09D5/004C09D7/20C09D7/61B05D2506/10B05D2320/00B05D2301/00C08K3/22B05D2420/01B05D2420/02B05D2420/03B05D2420/04
Inventor 李明旭李宁刘杰李鹏毕仙鹏陈卫聪黄浩坤杨妮莹
Owner 西安中核核仪器股份有限公司
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