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High-performance anti-radiation lead-containing organic glass and preparation method thereof

A plexiglass and anti-radiation technology, which is applied in the field of high-performance anti-radiation lead-containing plexiglass and its preparation, can solve the problems of few transparent materials for anti-neutron and gamma radiation, the effect is not optimal, and there are no reports on related applications. Achieve the effects of enhanced mechanical properties, high hardness, and improved optical properties

Active Publication Date: 2020-06-05
YANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the restriction of confidentiality, there are few research reports on neutron-resistant and gamma-radiation-resistant transparent materials at home and abroad, and there are almost no reports on related applications.
In the existing research data on neutron radiation-resistant transparent materials, there are reports in the literature (research progress of rare earth / polymer composite materials) that rare earth compounds and double bond-containing organic substances with addition reaction capabilities such as methacrylic acid Coordination compounding, and then introducing the second monomer styrene for copolymerization, the polystyrene / polymethyl methacrylate-rare earth copolymer has the ability to shield thermal neutrons and light transmittance, but the effect has not yet reached Best, low content of rare earth elements, and does not have the ability to prevent gamma rays
At present, the difficulty in the research on the modification of anti-radiation plexiglass is that it is difficult to combine shielding performance, high optical performance and strong comprehensive mechanical performance at the same time.

Method used

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  • High-performance anti-radiation lead-containing organic glass and preparation method thereof
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  • High-performance anti-radiation lead-containing organic glass and preparation method thereof

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preparation example Construction

[0027] The preparation method of high-performance anti-radiation lead-containing organic glass of the present invention comprises the following steps:

[0028] (1) Preparation of the mold: wash and dry two pieces of toughened glass, and use silica gel strips as spacers to make a mold.

[0029] (2) Dissolution: unsaturated lead carboxylate, octanoic acid or nonanoic acid, optical property modifier (ethoxylated bisphenol A dimethacrylate: such as diethoxylated bisphenol A dimethacrylate, triethoxylated bisphenol A dimethacrylate, triethoxylated bisphenol A dimethacrylate, One of phenol A dimethacrylate, tetraethoxylated bisphenol A dimethacrylate, octaethoxylated bisphenol A dimethacrylate, decaethoxylated bisphenol A dimethacrylate), propylene Amide and methacrylic acid were added into a three-necked flask, heated in a water bath, stirred and dissolved until the system was clear and transparent. The heating and dissolving temperature is 65-75° C., and the time is 10-30 minutes...

Embodiment 1

[0035] Weigh 40.00wt% lead acrylate (Pb(AA) 2 ) (60.00g), 20.00wt% nonanoic acid (NA) (30.00g), 0.00wt% triethoxylated bisphenol A dimethacrylate (BPA3EODMA) (0.00g), 40.00wt% acrylamide (AM) ( 60.00g), 0.00wt% methacrylic acid (MAA) (0.00g) were placed in a 250mL three-necked flask. Stir and dissolve in a 70°C water bath for 15-20 minutes, and finally obtain a clear and transparent mixed solution. 0.05 wt% of azobisisobutyronitrile (AIBN) (0.075 g) was added. Fill the mold after the initiator dissolves. Put the mold into a vacuum oven for 15 minutes of defoaming treatment. Finally, put the mold into an oven to carry out gradient temperature rise polymerization at 55°C for 12h, 80°C for 6h, and 100°C for 6h until complete, and finally release the mold to obtain high-performance radiation-proof organic glass.

Embodiment 2

[0037] Weigh 40.00wt% Pb(AA) with electronic balance 2 (60.00g), 20.00wt% NA (30.00g), 25.00wt% BPA3EODMA (37.50g), 15.00wt% AM (22.50g), 0.00wt% MAA (0.00g) were placed in a 250mL three-necked flask. Stir and dissolve in a 70°C water bath for 15-20 minutes, and finally obtain a clear and transparent mixed solution. 0.05 wt% AIBN (0.075 g) was added. Fill the mold after the initiator dissolves. Put the mold into a vacuum oven for 15 minutes of defoaming treatment. Finally, put the mold into an oven to carry out gradient temperature rise polymerization at 55°C for 12h, 80°C for 6h, and 100°C for 6h until complete, and finally release the mold to obtain high-performance radiation-proof organic glass.

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Abstract

The invention discloses a high-performance anti-radiation lead-containing organic glass and a preparation method thereof, and belongs to the technical field of lead-containing organic glass preparation. The preparation method comprises the following steps: adding 30.00-50.00 wt% of unsaturated lead carboxylate, 5.00-25.00 wt% of octanoic acid or nonanoic acid, 15.00-25.00 wt% of an optical performance modifier, 15.00-25.00 wt% of acrylamide and 2.50 wt% of methacrylic acid into a container; heating, stirring and dissolving until the system is clear and transparent; then adding an initiator, and after the initiator is dissolved, carrying out a vacuum defoaming treatment; finally, carrying out a gradient heating polymerization reaction, and cooling to the room temperature after the polymerization reaction is finished to obtain the organic glass. The preparation method is simple to operate, and the obtained anti-radiation organic glass is high in ray shielding performance, good in transparency, good in toughness, high in hardness and high in strength, and is expected to be used in places with gamma ray and X ray radiation.

Description

technical field [0001] The invention belongs to the technical field of lead-containing organic glass preparation, and relates to a high-performance anti-radiation lead-containing organic glass and a preparation method thereof. Background technique [0002] With the rapid development of agricultural and industrial production, national defense scientific research, radiation medicine and atomic energy industry, various rays have been widely used. However, while using rays, the hazards caused by rays should also be avoided, especially neutrons and gamma rays with strong penetrating power produced in nuclear radiation. Transparent radiation-proof materials are required in aviation, nuclear energy, medical and other application fields, and with the development of science and technology, its application fields will continue to expand. [0003] The power of gamma rays is mainly manifested in the following two aspects: First, the energy of gamma rays is large. Because the wavelengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/06C08F222/20
CPCC08F220/06C08F220/56
Inventor 张明张玉娟段梦婷王春宏于士龙胡丽敏
Owner YANGZHOU UNIV