Surface modified-gadolinium/boron/polyethylene composite with high shielding performance for neutron and gamma-ray
文献类型：期刊论文
| 作者 | Huo, Zhipeng1 ; Zhao, Sheng1,2; Zhong, Guoqiang1; Zhang, Hong1; Hu, Liqun1
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| 刊名 | NUCLEAR MATERIALS AND ENERGY
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| 出版日期 | 2021-12-01 |
| 卷号 | 29 |
| 关键词 | Surface modification Gadolinium oxide Composite Neutron Gamma-ray Radiation protection |
| DOI | 10.1016/j.nme.2021.101095 |
| 通讯作者 | Huo, Zhipeng(zhipeng.huo@ipp.ac.cn) |
| 英文摘要 | A series of surface modified-gadolinium/boron/polyethylene composites composed of surface modified fillers (M-microGd(2)O(3) and M-nanoGd(2)O(3)) are prepared for shielding neutron and gamma radiation. Fourier trans-form infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive X-ray energy spec-trometer (EDS) reveal that the surface modification of fillers significantly improved the interfacial compatibility and dispersion in the polyethylene matrix. Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and mechanical tensile tests show that the modification of nanoGd(2)O(3) and microGd(2)O(3) improve the thermal stability and mechanical property of the composites. The T-5% (initial decomposition temperature), Tp (endothermic peak temperatures) and Tensile strength of 10wt% M-nanoGd(2)O(3)/20wt% B4C/70wt% HDPE reachs 463.5 degrees C,137.2 degrees C, and 19.6MPa, which is greatly improved compared with unmodified materials and neat HDPE. The neutron and gamma shielding mechanism of the composites is studied both by experimental mea-surements and Monte Carlo simulation. The results show that the improved interfacial compatibility and dispersion of fillers in the polyethylene matrix effectively enhances the neutron and gamma shielding rate. The shielding performance of the composite blended with M-nanoGd(2)O(3) is significantly better than that of the composite blended with M-microGd(2)O(3) and the unmodified materials with the relatively thin thickness. Finally, a superior composite containing 10 wt% M-nanoGd(2)O(3)/20 wt% B4C/70 wt% HDPE reaches a neutron shielding rate of 90% at 9.1 cm under Cf-252 environment, and a gamma shielding rate of 70% at 13.7 cm under Cs-137 environment, which have the characteristics of lead free, low specific gravity and high shielding performance and is expected to be a promising radiation shielding materials used in neutron-gamma mixed fields. |
| WOS关键词 | MECHANICAL-PROPERTIES ; ATTENUATION COEFFICIENTS ; BORON-CARBIDE ; DESIGN ; PARAMETERS ; GADOLINIUM ; STRENGTH |
| 资助项目 | Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE012] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228] ; Institute of Energy, Hefei Comprehensive National Science Center[21KZL401] ; Institute of Energy, Hefei Comprehensive National Science Center[21KHH105] ; Institute of Energy, Hefei Comprehensive National Science Center[21KZS205] ; National Natural Science Foundation of China[21777165] ; National Magnetic Confinement Fusion Energy Research Project[2015GB103000] |
| WOS研究方向 | Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000724974600001 |
| 出版者 | ELSEVIER |
| 资助机构 | Users with Excellence Program of Hefei Science Center CAS ; Comprehensive Research Facility for Fusion Technology Program of China ; Institute of Energy, Hefei Comprehensive National Science Center ; National Natural Science Foundation of China ; National Magnetic Confinement Fusion Energy Research Project |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126774]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Huo, Zhipeng |
| 作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, MailBox 1126,350 Shushanhu Rd, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huo, Zhipeng,Zhao, Sheng,Zhong, Guoqiang,et al. Surface modified-gadolinium/boron/polyethylene composite with high shielding performance for neutron and gamma-ray[J]. NUCLEAR MATERIALS AND ENERGY,2021,29. |
| APA | Huo, Zhipeng,Zhao, Sheng,Zhong, Guoqiang,Zhang, Hong,&Hu, Liqun.(2021).Surface modified-gadolinium/boron/polyethylene composite with high shielding performance for neutron and gamma-ray.NUCLEAR MATERIALS AND ENERGY,29. |
| MLA | Huo, Zhipeng,et al."Surface modified-gadolinium/boron/polyethylene composite with high shielding performance for neutron and gamma-ray".NUCLEAR MATERIALS AND ENERGY 29(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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