A kind of cerium-doped lutetium disilicate scintillation fiber and its electrospinning synthesis method

A technology of scintillation fibers and electrospinning, which is applied in the directions of fiber processing, filament/thread forming, spinning solution preparation, etc., to achieve the effects of excellent scintillation performance, controllable fiber forming, and smooth surface

Inactive Publication Date: 2016-01-06
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the preparation of cerium-doped lutetium disilicate scintillation fibers by electrospinning technology.

Method used

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  • A kind of cerium-doped lutetium disilicate scintillation fiber and its electrospinning synthesis method
  • A kind of cerium-doped lutetium disilicate scintillation fiber and its electrospinning synthesis method
  • A kind of cerium-doped lutetium disilicate scintillation fiber and its electrospinning synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Weigh 4.64g of lutetium oxide, add 20g of concentrated nitric acid, heat and stir until dissolved, then evaporate the solution to obtain white solid lutetium nitrate; (2) add 20g of ethanol, stir and dissolve the solid lutetium nitrate, and then add 0.1012g of cerium nitrate, then add 1.2g of polyvinyl butyral, and stir until a transparent viscous liquid; (3) Weigh 5g of tetraethyl orthosilicate, add it to the mixed solution of 5g of absolute ethanol and 1g of water, Then add 0.1g of concentrated hydrochloric acid, stir for 4 hours, and mix well; (4) combine the steps

[0040] (2) The prepared solution is mixed with the solution prepared in step (3), and after stirring for 1 hour, the spinning source solution is obtained; (5) The prepared spinning stock solution is added to the syringe, and the spinning voltage is adjusted to 10kV, The injection speed parameter is 0.5ml / h, the needle is No. 6 needle, the receiving device is a roller, the roller speed is 10m / min, the...

Embodiment 2

[0042] (1) Weigh 4.64g of lutetium oxide, add 18g of concentrated nitric acid, heat and stir until dissolved, then evaporate the solution to obtain white solid lutetium nitrate; (2) add 10g of ethanol, stir and dissolve the solid lutetium nitrate, and then add 0.2024g of cerium nitrate, then add 0.8g of polyvinyl butyral, and stir until a transparent viscous liquid; (3) Weigh 5g of tetraethyl orthosilicate, add it to the mixed solution of 5g of absolute ethanol and 1g of water, Then add 0.1g of concentrated hydrochloric acid, stir for 4 hours, and mix well; (4) Mix the solution prepared in step (2) with the solution prepared in step (3), and stir for 1 hour to obtain the spinning source solution; (5) Mix The prepared spinning stock solution is added to the syringe, the spinning voltage is adjusted to be 20kV, the injection speed parameter is 2ml / h, the needle is No. 5 needle, the receiving device is a drum, the drum speed is 10m / min, the cylinder length is 300mm, the diameter ...

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Abstract

The invention discloses Ce-doped lutetium pyrosilicate scintillating fiber, and an electrostatic spinning synthetic method thereof. Chemical formula of the Ce-doped lutetium pyrosilicate scintillating fiber is Lu2Si2O7:Ce<3+>, atomic weight percentage of Ce / Lu ranges from 0.1% to 2%, crystal structure is Lu2SiO7, and fiber diameter ranges from 500nm to 2<mu>m The Ce-doped lutetium pyrosilicate scintillating fiber is synthesized via electrostatic spinning. The Ce-doped lutetium pyrosilicate scintillating fiber prepared by the electrostatic spinning synthetic method is excellent in continuity, and high in length-diameter ratio; surface is smooth; preparation steps are simple; production cost is low; fiber moulding is controllable; and scintillation performance is excellent. The Ce-doped lutetium pyrosilicate scintillating fiber possesses a promising application prospect in the field of scintillating materials, such as PET, used for nuclear medicine diagnosis.

Description

technical field [0001] The invention belongs to the technical field of preparation of nano-optic functional materials, and relates to a cerium-doped lutetium disilicate scintillation fiber and a synthesis method thereof, in particular to a method for electrospinning a cerium-doped lutetium disilicate scintillation fiber. Background technique [0002] Cerium-doped lutetium disilicate (Lu 2 Si 2 o 7 : Ce 3+ , abbreviated as LPS: Ce) density is about 6.2g / cm 3 , the density is relatively high, and the fluorescence decay time is short, about 30~40ns, less than 1 / 7 of scintillation single crystal BGO (BGO is an excellent scintillation single crystal, used in nuclear medicine detectors), the fluorescence emission peak Within the detection sensitivity range of the photomultiplier tube, the effective atomic number is Z=63.8, and it has good detection efficiency for γ-rays, and its energy resolution is similar to that of BGO. Moreover, cerium-doped lutetium disilicate (LPS: Ce) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D01F11/00D01D5/00D01D1/02C09K11/79
Inventor 刘茜卢琦刘光辉魏钦华
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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