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Radiation-resistant lead-containing transparent plastic and preparation method thereof

A transparent plastic, radiation-resistant technology, used in the reduction of greenhouse gases, nuclear power generation, climate sustainability, etc. Radiation performance, controllable polymerization, good shielding effect

Active Publication Date: 2021-07-13
YANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, polymer materials will degrade under long-term exposure to high-energy rays.
For transparent anti-radiation materials, the optical performance will decrease, such as the decrease of light transmittance and the increase of yellow index, which will affect the observation effect and reduce the service life
The difficulty in the current research on the modification of radiation-resistant transparent materials is that it is difficult to have both shielding performance (ie high lead content) and high optical performance at the same time
In the prior art, the material can achieve the purpose of both radiation protection and radiation resistance by adding additional radiation resistance agents, but the use of too many components will cause some impact on the performance of transparent plastics

Method used

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  • Radiation-resistant lead-containing transparent plastic and preparation method thereof
  • Radiation-resistant lead-containing transparent plastic and preparation method thereof
  • Radiation-resistant lead-containing transparent plastic and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0023] (1) Preparation of the mould: wash and dry two pieces of toughened glass, and use a silica gel strip as a gasket to make a mould;

[0024] (2) Dissolving: 50.0~70.0wt% unsaturated lead carboxylate (lead methacrylate / lead acrylate), 15.0~45.0wt% optical performance modifier (acetic acid / propionic acid / butyric acid / valeric acid / caproic acid / heptanoic acid / caprylic acid / nonanoic acid), 5.0~45.0wt% acrylate monomer (methyl methacrylate / ethyl methacrylate / butyl methacrylate / methyl acrylate / ethyl acrylate / butyl acrylate One of them) into a three-necked flask, heated in a water bath to 80±5°C, stirred and dissolved until the system is clear and transparent;

[0025] (3) Prepolymerization: add 0.1wt% initiator (AIBN / AVBN), raise the temperature to 80±5°C, and prepolymerize for 1-9 minutes. At this time, the system has a certain viscosity, and then pour the prepolymer into a flat glass mold;

[0026] (4) Gradient heating polymerization: first polymerize at 50±5°C for 12 hours,...

Embodiment 1

[0029] According to the mass ratio of unsaturated lead carboxylate, optical performance modifier, and acrylic monomers, the mass ratio of 60.0wt%: 15.0wt%: 25.0wt%, weigh Pb(MAA) 2 18.0g, 4.5g of n-octanoic acid OA, 7.5g of butyl acrylate BA, and 0.03g of initiator AIBN were weighed, and the radiation-resistant transparent plastic was obtained according to the above technical scheme.

Embodiment 2

[0031] According to the mass ratio of unsaturated lead carboxylate, optical performance modifier, and acrylic monomers, the mass ratio of 60.0wt%: 20.0wt%: 20.0wt%, weigh Pb (MAA) 2 18.0g, OA 6.0g, BA 6.0g, weigh 0.03g of initiator AIBN, and make radiation-resistant transparent plastic according to the above technical scheme.

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Abstract

The invention relates to a radiation-resistant lead-containing transparent plastic and a preparation method thereof. The preparation method comprises the following steps: adding unsaturated lead carboxylate, an optical property modifier and an acrylic monomer into a container, heating at 80 + / -5 DEG C, stirring and dissolving until the system is clear and transparent; adding an initiator, and carrying out vacuum defoaming treatment after the initiator is dissolved; and finally, carrying out gradient heating polymerization reaction, and cooling to room temperature after polymerization to obtain the radiation-resistant lead-containing transparent plastic. The lead-containing transparent plastic prepared by the invention is high in lead content, good in shielding effect and excellent in anti-radiation performance; under the condition of high lead content, excellent optical performance can still be kept, and good radiation resistance is achieved; and the formula system is simple, and polymerization is controllable.

Description

technical field [0001] The invention relates to the technical field of transparent plastic preparation, in particular to a radiation-resistant lead-containing transparent plastic and a preparation method thereof. Background technique [0002] With the rapid development of human society, nuclear energy, as an economical, clean and safe energy source, has been widely recognized and accepted all over the world. Spent fuel refers to nuclear fuel that has been exposed to radiation and used. In the spent fuel reprocessing plant, neutron-proof hot chamber viewing windows and neutron-proof glove boxes need to use transparent materials, and neutron radiation places will be accompanied by gamma rays. Gamma rays have strong penetrating power. When gamma rays irradiate the biological body, they will ionize with the biological cells, causing the biological cells to be inhibited, damaged or even necrotic, resulting in different degrees of physiological, pathological and biochemical chang...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/18C08F2/44C08K5/09
CPCC08F220/06C08F2/44C08K5/09C08F220/1804Y02E30/30
Inventor 张明张玉娟王春宏于士龙胡丽敏
Owner YANGZHOU UNIV
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