Radiation-resistant lead-containing transparent plastic and preparation method thereof
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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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[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 tra
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[0023] (1) Preparation of the mold: Dry two tempered glass to dry with a silicone strip as a gasket, and make a mold;
[0024] (2) Dissolve: 50.0 ~ 70.0 wt% unsaturated carboxylate (lead / acrylate), 15.0 ~ 45.0 wt% optical performance modifier (acetic acid / propionic acid / butyric acid / caproic acid) / Heptanoic acid / octanoic acid), 5.0 ~ 45.0 wt% acrylate lipid monomer (methyl methacrylate / methyl methacrylate / methyl methacrylate / methyl acrylate) / acrylate / acrylate One of them) is added to the three flasks, the water bath is heated to 80 ± 5 ° C, stirred and dissolved into the system clarified and transparent;
[0025] (3) Prepolymerization: Add 0.1 wt% initiator (AIBN / AVBN), warmed to 80 ± 5 ° C, prepolymer 1 to 9 min, at which time the system has a certain viscosity, then incubate the prepolymer into the flat glass mold;
[0026] (4) Gradient temperature rise polymerization: 1 1 ± 5 ° C polymerization 12h, then polymerized by 80 ± 5 ° C for 6 h, last 100 ± 5 ° C...
Example Embodiment
[0028] Example 1
[0029] According to the lead in unsaturated carboxylate, optical performance modifier, the amount of the percrystinal monomer is 60.0% by weight: 15.0%: 25.0 wt%, weigh PB (MAA) 2 18.0g, octanoate OA 4.5 g, butyl acrylate BA 7.5g, referred to as a reflection agent AIBN 0.03 g, and the radiopa-resistant transparent plastic is obtained according to the above technical solution.
Example Embodiment
[0030] Example 2
[0031] According to the lead, optical performance modifier, the permeability of the acrylic monomer is 60.0%: 20.0%: 20.0% by weight, weigh PB (MAA) 2 18.0 g, OA 6.0 g, BA 6.0g, called the fetching agent AIBN 0.03 g, and the radiation-resistant transparent plastic was obtained according to the above technical solution.
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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...
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