http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Cao, Da,Yang, Ge,Bourham, Mohamed,Moneghan, Dan Korean Nuclear Society 2020 Nuclear Engineering and Technology Vol.52 No.11
This work investigated the gamma-ray shielding performance, and the physical and mechanical properties of poly (methyl methacrylate) (PMMA) composites embedded with 0-44.0 wt% bismuth trioxide (Bi<sub>2</sub>O<sub>3</sub>) fabricated by the fast ultraviolet (UV) curing method. The results showed that the addition of Bi<sub>2</sub>O<sub>3</sub> had significantly improved the gamma shielding ability of PMMA composites. Mass attenuation coefficient and half-value layer were examined using five gamma sources (Cs-137, Ba-133, Cd-109, Co-57, and Co-60). The high loading of Bi<sub>2</sub>O<sub>3</sub> in the PMMA samples improved the micro-hardness to nearly seven times that of the pure PMMA. With these enhancements, it was demonstrated that PMMA/Bi<sub>2</sub>O<sub>3</sub> composites are promising gamma shielding materials. Furthermore, the fast UV curing exerts its great potential in significantly shortening the production cycle of shielding material to enable rapid manufacturing.