Design method of lead-free flexible radiation protection material

A design method and radiation protection technology, applied in the field of nuclear technology application, can solve the problems of lead weak shielding area, easy to be inhaled into human body, easy to volatilize, etc., and achieve a heavy effect

Pending Publication Date: 2020-06-23
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of material has disadvantages such as poor stability, easy volatilization, strong biological toxicity, and easy inhalation into the human body. Moreover, lead has weak shielding areas in certain energy regions, and the protective effect is not ideal.

Method used

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  • Design method of lead-free flexible radiation protection material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] When the X-ray peak energy of the security inspection machine is around 90keV, the radiation protective clothing materials for the workers in production, commissioning, and use shall use flexible materials such as natural rubber as the base material, and the mass fraction of the base material shall be 50%, and bismuth oxide and Two materials of tungsten are used as functional filling materials. When the filling ratio is 1:1 and the material thickness is 1mm, the radiation shielding performance of the produced radiation protective clothing is improved by more than 20% compared with the traditional lead protective clothing; compared with only filling bismuth oxide, its The radiation shielding performance is improved by more than 20%.

Embodiment 2

[0025] X-ray peak energy in the 54 ~ 66keV X tube production, debugging, use and other staff radiation protective clothing materials, choose bismuth oxide and gadolinium oxide two materials as functional filling materials, the production of radiation protective clothing Radiation shielding performance is significantly better than traditional lead protective clothing. Natural rubber and other flexible materials are selected as the base material, and the mass fraction of the base material is 50%. When the filling ratio of bismuth oxide and gadolinium oxide is 1:1, and the material thickness is 1mm, the radiation protective clothing produced has less radiation than traditional lead protective clothing. The shielding performance is improved by more than 14%; compared with only filling bismuth oxide, the radiation shielding performance is improved by more than 14%.

Embodiment 3

[0027] The radiation protective clothing materials for workers in the production, debugging and use of industrial CT with X-ray peak energy greater than 100keV are selected to add bismuth oxide materials as functional filling materials, and the radiation shielding performance of the produced radiation protective clothing is significantly better than other lead-free materials. Radiation protective clothing made of functional filling materials. When the flexible material such as natural rubber is selected as the base material, the mass fraction of the base material is 50%, and the material thickness is 1mm, the radiation shielding performance is increased by more than 5% compared with filling bismuth oxide and gadolinium oxide.

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Abstract

The invention discloses a design method of a lead-free flexible radiation protection material, which comprises the following steps: (1) when the X-ray peak energy is less than 54keV, selecting bismuthoxide as a functional filling material; (2) when the X-ray peak energy is 54-66keV, bismuth oxide and gadolinium oxide are selected as functional filling materials; (3) when the X-ray peak energy is66-100 keV, bismuth oxide and tungsten are selected as functional filling materials; and (4) when the X-ray peak energy is greater than 100keV, bismuth oxide is selected as the functional filling material. The invention further discloses the lead-free flexible radiation protection material designed by the design method and an application of the lead-free flexible radiation protection material in the field of radiation protection. According to the design method of the lead-free flexible radiation protection material, an optimal functional material filling scheme is provided for different X-rayenergy under specific working conditions, and the problems that a traditional protection material is heavy and poor in wearing comfort due to the fact that the traditional protection material is designed and processed in a unified mode without facing actual working conditions are effectively solved.

Description

technical field [0001] The invention relates to the application field of nuclear technology, in particular to a design method of a lead-free flexible radiation protection material. Background technique [0002] At present, X-rays have been widely used in national production and life, and the issue of radiation protection has attracted much attention. The X-ray energy used in different nuclear technology application fields is different. X-rays are generated by X-tubes, and their energy is closely related to the tube voltage value of X-tubes. The current X-tube voltage ranges from 50 to 420keV. Therefore, the peak energy of the X-ray scattering field for radiation practitioners in different fields and workplaces will be different. Traditional flexible radiation protection materials are composite materials made of lead or lead compounds as the main filling material and natural rubber as the base material. For example, lead rubber protective clothing, lead rubber protective bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F1/10G21F3/02
CPCG21F1/103G21F1/106G21F3/02
Inventor 闫思齐刘汉洲成鹏于广益
Owner SUZHOU UNIV
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