采用表面处理和接枝聚合的方法分别制备了以环氧树脂为基体,以钐元素为功能元素的氧化钐/环氧树脂与聚丙烯酸钐/环氧树脂辐射防护材料.用X射线衍射、扫描电镜等方法对比研究了通过表面处理法制得的氧化钐/环氧树脂和通过接枝聚合法制得的聚丙烯酸钐/环氧树脂2种材料样品的微观结构;测试了材料的力学性能,并用多道碘化钠(NaI)γ谱仪和GammaVision软件分析了其辐射防护能力.结果表明:聚丙烯酸钐/环氧树脂复合材料的制备过程相对较复杂,该样品中钐元素分布更均匀,力学性能优于氧化钐/环氧树脂复合材料,但是聚丙烯酸钐/环氧树脂样品中钐的质量分数最多只能提高到11%;对于低能射线,钐元素的含量是影响复合材料屏蔽率的决定性因素,而对于高能射线,钐元素分布对复合材料屏蔽率的影响大于钐元素质量分数带来的影响.
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