摘要
以硝酸镱、钨酸钠为原料,采用水热合成法制备得到片层状钨酸镱(Yb_(2)WO_(6))粉体,并将钨酸镱粉体分散在环氧树脂中得到EP/Yb_(2)WO_(6)复合材料,测试其在低能、中能和高能场下的γ射线屏蔽性能。由SEM显示Yb_(2)WO_(6)呈片状分布,大小不一但厚度较为均匀。通过对环氧树脂复合片状Yb_(2)WO_(6)在低、中、高能场的测试发现,该材料在各个能级的γ射线屏蔽性能表现良好,在铅的弱吸收区(40 keV~88 keV),材料的铅当量达到0.2066 mm,相对其它能级有明显的提升。同时,片层状钨酸镱完美地解决了铅基材料有剧毒的弊端,因此该材料能很好的适用于未来核医学和辐射防护领域。
In this paper,ytterbium nitrate and sodium tungstate are used as raw materials to prepare a kind of novel lamellar ytterbium tungstate(Yb_(2)WO_(6))powder by hydrothermal synthesis.γ-ray shielding performance of Yb_(2)WO_(6)under low,medium and high energy fields was tested by dispersing the powder into epoxy resin matrix to obtain a composite material(EP/Yb_(2)WO_(6)).SEM showed that Yb_(2)WO_(6)existed in flakes,with different sizes but relatively uniform thickness.Through the test of epoxy resin composite with lamellar Yb_(2)WO_(6)in low,medium and high energy fields,it is found that the material showed goodγ-ray shielding performance at various energy levels.In the feeble absorbing area of lead(40 keV~88 keV),the lead equivalent of the material reaches 0.0266 cm,which was a significant improvement over other energy levels.At the same time,the lamellar ytterbium tungstate solves the shortcoming of lead-based materials that are highly toxic,so the material is suitable for future nuclear medicine and radiation shielding fields.
作者
张雪松
薛丽燕
江正明
李玉光
杨帆
李长香
ZHANG Xue-song;XUE Li-yan;JIANG Zheng-ming;LI Yu-guang;YAN Fan;LI Chang-xiang(Xiamen Institute of Rare Earth Materials,Haixi Institute,Chinese Academy of Sciences,Xiamen 361021,China;Laboratory of Science and Technology on Reactor System Design Technology,Nuclear Power Institute of China,Chengdu 610213,China;College of Chemical Engineering,Fuzhou University,Fuzhou 350108,China)
出处
《稀土》
CAS
CSCD
北大核心
2022年第4期81-87,共7页
Chinese Rare Earths
基金
国家重点研发计划项目(2019YFC0605000)
中国科学院计划战略性先导科技专项A(XDA21000000)
关键词
水热合成法
片层状
钨酸镱
环氧树脂
γ射线屏蔽
hydrothermal synthesis
lamellar
ytterbium tungstate
epoxy resin
γ-ray shielding
作者简介
张雪松(1995-),男,河北秦皇岛人,硕士研究生,主要从事辐射屏蔽材料的研究,E-mail:xszhang1995@gmail.com;通讯作者:李玉光,高级工程师,E-mail:277697480@qq.com;通讯作者:杨帆,研究员,E-mail:fanyang2013@fjirsm.ac.cn
