Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites
BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclea...
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| Autor*in: |
ZHENG Yulong [verfasserIn] PAN Xinyi [verfasserIn] XIONG Houhua [verfasserIn] ZENG Zhengkui [verfasserIn] DU Jifu [verfasserIn] CHEN Zhiyuan [verfasserIn] |
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| Sprache: |
Chinesisch |
| Erschienen: |
2022 |
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| Übergeordnetes Werk: |
In: He jishu - Science Press, 2022, 45(2022), 6, Seite 060203-060203 |
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| Übergeordnetes Werk: |
volume:45 ; year:2022 ; number:6 ; pages:060203-060203 |
| Links: |
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| DOI / URN: |
10.11889/j.0253-3219.2022.hjs.45.060203 |
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| Katalog-ID: |
DOAJ080871585 |
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| 520 | |a BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. | ||
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10.11889/j.0253-3219.2022.hjs.45.060203 doi (DE-627)DOAJ080871585 (DE-599)DOAJ6ad160265fc64c0f9ad18f13b0a3c1f8 DE-627 ger DE-627 rakwb chi TK9001-9401 ZHENG Yulong verfasserin aut Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. radiation protection composite materials shielding rare earth materials Nuclear engineering. Atomic power PAN Xinyi verfasserin aut XIONG Houhua verfasserin aut ZENG Zhengkui verfasserin aut DU Jifu verfasserin aut CHEN Zhiyuan verfasserin aut In He jishu Science Press, 2022 45(2022), 6, Seite 060203-060203 (DE-627)DOAJ078593506 02533219 nnns volume:45 year:2022 number:6 pages:060203-060203 https://doi.org/10.11889/j.0253-3219.2022.hjs.45.060203 kostenfrei https://doaj.org/article/6ad160265fc64c0f9ad18f13b0a3c1f8 kostenfrei https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.060203&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 45 2022 6 060203-060203 |
| spelling |
10.11889/j.0253-3219.2022.hjs.45.060203 doi (DE-627)DOAJ080871585 (DE-599)DOAJ6ad160265fc64c0f9ad18f13b0a3c1f8 DE-627 ger DE-627 rakwb chi TK9001-9401 ZHENG Yulong verfasserin aut Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. radiation protection composite materials shielding rare earth materials Nuclear engineering. Atomic power PAN Xinyi verfasserin aut XIONG Houhua verfasserin aut ZENG Zhengkui verfasserin aut DU Jifu verfasserin aut CHEN Zhiyuan verfasserin aut In He jishu Science Press, 2022 45(2022), 6, Seite 060203-060203 (DE-627)DOAJ078593506 02533219 nnns volume:45 year:2022 number:6 pages:060203-060203 https://doi.org/10.11889/j.0253-3219.2022.hjs.45.060203 kostenfrei https://doaj.org/article/6ad160265fc64c0f9ad18f13b0a3c1f8 kostenfrei https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.060203&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 45 2022 6 060203-060203 |
| allfields_unstemmed |
10.11889/j.0253-3219.2022.hjs.45.060203 doi (DE-627)DOAJ080871585 (DE-599)DOAJ6ad160265fc64c0f9ad18f13b0a3c1f8 DE-627 ger DE-627 rakwb chi TK9001-9401 ZHENG Yulong verfasserin aut Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. radiation protection composite materials shielding rare earth materials Nuclear engineering. Atomic power PAN Xinyi verfasserin aut XIONG Houhua verfasserin aut ZENG Zhengkui verfasserin aut DU Jifu verfasserin aut CHEN Zhiyuan verfasserin aut In He jishu Science Press, 2022 45(2022), 6, Seite 060203-060203 (DE-627)DOAJ078593506 02533219 nnns volume:45 year:2022 number:6 pages:060203-060203 https://doi.org/10.11889/j.0253-3219.2022.hjs.45.060203 kostenfrei https://doaj.org/article/6ad160265fc64c0f9ad18f13b0a3c1f8 kostenfrei https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.060203&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 45 2022 6 060203-060203 |
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10.11889/j.0253-3219.2022.hjs.45.060203 doi (DE-627)DOAJ080871585 (DE-599)DOAJ6ad160265fc64c0f9ad18f13b0a3c1f8 DE-627 ger DE-627 rakwb chi TK9001-9401 ZHENG Yulong verfasserin aut Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. radiation protection composite materials shielding rare earth materials Nuclear engineering. Atomic power PAN Xinyi verfasserin aut XIONG Houhua verfasserin aut ZENG Zhengkui verfasserin aut DU Jifu verfasserin aut CHEN Zhiyuan verfasserin aut In He jishu Science Press, 2022 45(2022), 6, Seite 060203-060203 (DE-627)DOAJ078593506 02533219 nnns volume:45 year:2022 number:6 pages:060203-060203 https://doi.org/10.11889/j.0253-3219.2022.hjs.45.060203 kostenfrei https://doaj.org/article/6ad160265fc64c0f9ad18f13b0a3c1f8 kostenfrei https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.060203&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 45 2022 6 060203-060203 |
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10.11889/j.0253-3219.2022.hjs.45.060203 doi (DE-627)DOAJ080871585 (DE-599)DOAJ6ad160265fc64c0f9ad18f13b0a3c1f8 DE-627 ger DE-627 rakwb chi TK9001-9401 ZHENG Yulong verfasserin aut Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. radiation protection composite materials shielding rare earth materials Nuclear engineering. Atomic power PAN Xinyi verfasserin aut XIONG Houhua verfasserin aut ZENG Zhengkui verfasserin aut DU Jifu verfasserin aut CHEN Zhiyuan verfasserin aut In He jishu Science Press, 2022 45(2022), 6, Seite 060203-060203 (DE-627)DOAJ078593506 02533219 nnns volume:45 year:2022 number:6 pages:060203-060203 https://doi.org/10.11889/j.0253-3219.2022.hjs.45.060203 kostenfrei https://doaj.org/article/6ad160265fc64c0f9ad18f13b0a3c1f8 kostenfrei https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2022.hjs.45.060203&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 45 2022 6 060203-060203 |
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Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">radiation protection</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">composite materials</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">shielding</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">rare earth materials</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Nuclear engineering. 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Radiation protection performance and positron lifetime of nano Y2O3/epoxy resin composites |
| abstract |
BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. |
| abstractGer |
BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. |
| abstract_unstemmed |
BackgroundTraditional shielding X/γ ray materials are generally lead or lead containing materials, which have the disadvantages of high toxicity, heavy weight, difficult molding and high price. Polymer composite materials are considered to be new materials that can effectively protect against nuclear radiation in the future. Epoxy resin (EP) as a base material has many advantages, such as corrosion resistance, good mechanical properties, strong wear resistance, excellent insulation, and stronger radiation resistance, while rare earth materials have a better shielding effect on γ-rays in the 20~88 keV energy region, and can make up for the weak absorption zone of lead.PurposeThis study aims to verify the shielding performance of nano Yttrium trioxide/epoxy resin composites (Y2O3/EP) against X/γ rays.MethodsFirst of all, Y2O3/epoxy resin radiation protection materials with different yttrium oxide contents were prepared by filling Y2O3 into EP. Then, the positron lifetime spectrum analysis combined with X-ray diffraction (XRD), scanning electron microscopy (SEM) and other methods were employed to study the microstructure of the material whilst the thermogravimetric analysis and differential scanning calorimeter (DSC) were applied to analyzing the thermal stability of the material, and Vickers hardness tester and universal tensile machine were used to test the mechanical properties of the material. Finally, the Monte Carlo N Particle Transport Code (MCNP) was applied to the simulation calculation of the radiation protection performance of the these samples.ResultsTesting results show that Y2O3 filled with epoxy resin can improve the thermal stability, hardness and Young's modulus of the composite material, but reduce the tensile strength. In the X/γ ray energy range of 20~1 332 keV, the shielding effect of 40% Y2O3/EP composite is 2%~10% of that of pure Pb under the same material thickness, and the shielding effect of 40% Y2O3/EP composite is 15%~66% of that of pure Pb under the same mass.ConclusionsAlthough the shielding effect of Y2O3/EP composite is worse than that of pure lead, it can meet the shielding requirements at X/γ low-energy radiation region with capability to replace lead or lead containing materials as radiation shielding materials. |
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