Red-light plastic scintillator as well as preparation method and application thereof

A plastic scintillator, scintillator technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the cost difference, limit the size and application field of plastic scintillator, reduce scintillator transparency, mechanical strength, stability, etc. problems, to achieve the effect of prolonged mechanical strength, considerable commercial application prospects, and excellent performance

Active Publication Date: 2021-01-19
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, high-concentration doping of organic scintillation dyes will reduce the transparency, mechanical strength, and stability of the scintillator, which limits the size and application fields of the prepared plastic scintillator, making the cost similar to that of organic single crystals.

Method used

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  • Red-light plastic scintillator as well as preparation method and application thereof
  • Red-light plastic scintillator as well as preparation method and application thereof
  • Red-light plastic scintillator as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) 0.01g of 1,1,4,4-tetraphenyl-1,3-butadiene (TPB), 0.001g of 4-(dicyanomethylene)-2-methyl -6-(4-Dimethylaminostyryl)-4H-pyran (DCM), 0.125g of Eu(DBM) 3 The styrene (St) of Phen and 3.75g is mixed and stirred to form a solution and is recorded as solution A; The azobisisobutyronitrile (AIBN) of 0.001g and the acrylonitrile (AN) of 1.25g are mixed and stirred to form a solution and recorded It is solution B; finally, mix uniformly stirred solution A and solution B and ultrasonically homogenize to obtain Eu(DBM)3Phen / TPB / DCM / AS precursor solution. Among them, the mass ratio of styrene and acrylonitrile is 75:25.

[0045] (2) Add the precursor solution into a silicate glass ampoule and mix well. Then first vacuumize for 3.0min, then blow nitrogen for 2.0min, repeat the above operation at least 3 times. Finally, it is sealed under vacuum conditions.

[0046] (3) First keep warm at 50°C for 12 hours, then raise the temperature by 5°C every 6 hours to 100°C, and keep ...

Embodiment 2

[0048] (1) 0.01g of 1,1,4,4-tetraphenyl-1,3-butadiene (TPB), 0.002g of 4-(dicyanomethylene)-2-methyl -6-(4-Dimethylaminostyryl)-4H-pyran (DCM), 0.125g of Eu(DBM) 3 The styrene (St) of Phen and 3.75g is mixed and stirred to form a solution and is recorded as solution A; The azobisisobutyronitrile (AIBN) of 0.001g and the acrylonitrile (AN) of 1.25g are mixed and stirred to form a solution and recorded It is solution B; finally, mix uniformly stirred solution A and solution B and ultrasonically homogenize to obtain Eu(DBM)3Phen / TPB / DCM / AS precursor solution. Among them, the mass ratio of styrene and acrylonitrile is 75:25.

[0049] (2) Add the precursor solution into a silicate glass ampoule and mix well. Then first vacuumize for 3.0min, then blow nitrogen for 2.0min, repeat the above operation at least 3 times. Finally, it is sealed under vacuum conditions.

[0050] (3) First keep warm at 50°C for 12 hours, then raise the temperature by 5°C every 6 hours to 100°C, and keep ...

Embodiment 3

[0052] (1) 0.01g of 1,1,4,4-tetraphenyl-1,3-butadiene (TPB), 0.003g of 4-(dicyanomethylene)-2-methyl -6-(4-Dimethylaminostyryl)-4H-pyran (DCM), 0.125g of Eu(DBM) 3 The styrene (St) of Phen and 3.75g is mixed and stirred to form a solution and is recorded as solution A; The azobisisobutyronitrile (AIBN) of 0.001g and the acrylonitrile (AN) of 1.25g are mixed and stirred to form a solution and recorded It is solution B; finally, mix uniformly stirred solution A and solution B and ultrasonically homogenize to obtain Eu(DBM)3Phen / TPB / DCM / AS precursor solution. Among them, the mass ratio of styrene and acrylonitrile is 75:25.

[0053] (2) Add the precursor solution into a silicate glass ampoule and mix well. Then first vacuumize for 3.0min, then blow nitrogen for 2.0min, repeat the above operation at least 3 times. Finally, it is sealed under vacuum conditions.

[0054] (3) First keep warm at 50°C for 12 hours, then raise the temperature by 5°C every 6 hours to 100°C, and keep ...

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PUM

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Abstract

The invention discloses a red-light plastic scintillator and a preparation method and application thereof. The red-light plastic scintillator is composed of a scintillator matrix, and a triplet trapping agent, a singlet trapping agent and a wave-shifting agent, which are co-doped in thescintillator matrix, wherein thescintillator matrix is AS, the triplet trapping agent is Eu(DBM)3Phen, the singlet trapping agent is TPB or BPEA, and the wave-shifting agent is DCM; the obtained red-light plastic scintillator has neutron gamma discrimination capability, has good mechanical strength and stability, and can be applied to a neutron detector.

Description

technical field [0001] The invention relates to a red light plastic scintillator, a preparation method thereof and an application thereof, belonging to the technical field of plastic scintillator preparation. Background technique [0002] In recent years, due to the continuous increase of the world's population flow, the inspection of people and facilities for chemical, biological, radiation, nuclear and explosive threats is one of the major issues at present. Nuclear explosions, nuclear physical reactions, nuclear weapon materials, etc. will release a large number of neutrons accompanied by gamma ray background radiation; correspondingly, C, H, O, N or Fe, Ti, Gd, Sm will be contained in dangerous goods and underground mineral deposits and other elements, but the composition ratio of these elements will be significantly different compared with the conventional situation. According to the changes in the energy spectrum or absorption of neutrons after interacting with these e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/02C08F212/10C08F220/44
CPCC09K11/06C09K11/025C08F212/10C09K2211/182C08F220/44
Inventor 刘应都王存谢鹤楼胡俊周云欧阳晓平齐福刚赵镍
Owner XIANGTAN UNIV
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