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A kind of lead-free lightweight X, gamma ray protection material and preparation method thereof

A technology of protective material and gamma rays, applied in the field of radiation protection, can solve the problems of waste of resources, increased weight of radiation protective clothing, etc., and achieve the effect of improving the shielding ability

Active Publication Date: 2022-01-04
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the weight of the prepared radiation protective clothing and waste resources

Method used

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  • A kind of lead-free lightweight X, gamma ray protection material and preparation method thereof
  • A kind of lead-free lightweight X, gamma ray protection material and preparation method thereof
  • A kind of lead-free lightweight X, gamma ray protection material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Refer to attached figure 2 , a lead-free lightweight X, γ-ray protective material consists of three layers, from top to bottom are polyimide film 1, bismuth thin skin layer 2, functional PU coating 3; the thickness is 0.3mm. The thickness of polyimide film 1 is 150 μm, which is the base material of X and γ-ray protection materials; the thickness of bismuth thin skin layer 2 is 50 μm, and the powder is melted and pressed into flakes to form a seamless metal bismuth skin, which is extremely reduced. The probability of photons passing through the gap greatly improves the shielding ability of rays; the functional PU coating 3 raw materials are composed of metal bismuth powder, dimethylacetamide, PU glue and silane coupling agent, of which metal bismuth powder The mass ratio of silane coupling agent to silane coupling agent is 3:1, the mass ratio of dimethylacetamide to PU glue is 1:1, the mass ratio of metal bismuth powder to PU glue is 2:1; the coating thickness is 0.1mm....

Embodiment 2

[0042] Refer to attached figure 2 , a lead-free lightweight X, γ-ray protective material consists of three layers, from top to bottom are polyimide film 1, bismuth thin skin layer 2, functional PU coating 3; the thickness is 0.5mm. The thickness of polyimide film 1 is 150 μm, which is the base material of X and γ-ray protection materials; the thickness of bismuth thin skin layer 2 is 150 μm, and the powder is melted and pressed into flakes to form a seamless metal bismuth skin, which is extremely reduced. The probability of photons passing through the gap greatly improves the shielding ability of rays; the functional PU coating 3 raw materials are composed of metal bismuth powder, dimethylacetamide, PU glue and silane coupling agent, of which metal bismuth powder The mass ratio to silane coupling agent is 3:1, the mass ratio of dimethylacetamide to PU glue is 2:1, the mass ratio of metal bismuth powder to PU glue is 3:1; the coating thickness is 0.2mm.

[0043] Refer to atta...

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Abstract

The invention relates to a lead-free lightweight X and gamma ray protective material and a preparation method thereof, which consists of three layers, which are respectively polyimide film, bismuth thin skin layer and functional PU coating from bottom to top. Apply nano-metal bismuth powder evenly on the polyesterimide film. After high-temperature hot pressing, the metal bismuth powder melts into a thin bismuth skin layer. After modifying the nano-metal bismuth powder, add it to PU glue and mix it evenly before spraying on bismuth. On the surface of the thin skin layer, after drying, the fabric is rolled and formed by a calender roller to obtain a lead-free lightweight X and γ-ray protective material. The prepared X and γ-ray protective materials have greatly improved the protection efficiency due to the flaky bismuth thin skin layer. As a protective clothing material, it is not only high temperature resistant, lead-free and lightweight, but also has a simple preparation process and high production efficiency. It has good radiation protection. application prospects.

Description

technical field [0001] This application relates to the field of radiation protection, in particular to a lead-free lightweight X and gamma ray protection material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of national defense scientific research, radiation medicine and atomic energy industry, the use of various rays has become increasingly widespread. X and gamma rays are important ones. X and gamma rays can penetrate into the human body and ionize with the cells in the body. The ions produced by the ionization can destroy the genetic material such as protein and nucleic acid in the living cells in the human body, which will lead to the normal metabolic process in the human body, and in serious cases can lead to living in the body. cell death. Long-term exposure to X and gamma rays can cause damage to gonads, mammary glands, hematopoietic bone marrow, etc. Excessive doses can even cause cancer, posing a serio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C09D175/04C09D7/61G21F1/08G21F1/12C08L79/08
CPCC09D175/04C09D7/61G21F1/125G21F1/085C08J2379/08C08J2475/04C08J7/0423C08K3/08
Inventor 姚理荣石敏万星辰吴绥菊杨涛潘刚伟徐思峻
Owner NANTONG UNIVERSITY