WO3/CeO2/环氧树脂基辐射防护材料的制备及性能研究

材料导报, 2012, 26(z1): 184-205.

WO3/CeO2/环氧树脂基辐射防护材料的制备及性能研究

董宇 ^1, , 戴耀东 ^2, , 常树全 ^3, , 康斌 ^4, , 杨小勇 ^5,

1.南京航空航天大学材料科学与技术学院,南京,210016

2.南京航空航天大学材料科学与技术学院,南京,210016

3.南京航空航天大学材料科学与技术学院,南京,210016

4.南京航空航天大学材料科学与技术学院,南京,210016

5.江苏省疾病预防控制中心,南京,210009

基金项目: 江苏省环境保护研究基金(201151) 江苏省自然科学基金(BK2011738, BK2011739,BK2012799) 国家自然科学基金(81072156,81101146,11105073)

关键词：辐射防护 , 屏蔽性能 , WO3 , CeO2 , EGSnrc , 吸收边

Preparation of WO3/CeO2/Epoxy Resin Based Multilayer Radiation Shielding Material and Its Property Research

采用表面处理法修饰稀土氧化物WO3、CeO2,制备了WO3/CeO2/环氧树脂基多层辐射防护材料.利用扫描电镜(SEM)观察材料的微观结构；用多道γ谱仪和Gamma Vision软件对该多层辐射防护材料进行了辐射防护性能测试；运用蒙特卡洛模拟软件EGSnrc对光子在材料中的输运过程进行模拟,并通过计算注量,得出该材料线性衰减系数的理论值,与γ谱测试结果进行比较;比较双层结构中,WO3以及CeO2的先后顺序对于该多层辐射防护材料的影响.结果表明,制备的材料功能性颗粒分布均匀,有轻微团聚现象,在低能区间,CeO2在前的多层材料防护性能较为优越,但是在高能区间WO3在前的防护性能较好,模拟计算的线性衰减系数与实验结果基本吻合.

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