宽能中子辐射个人防护材料研究  

Research on personal protection materials against wide energy neutron radiation

作　　者：王震涛 王海军 张凯 桑文娟 杨翊方 Wang Zhentao;Wang Haijun;Zhang Kai;Sang Wenjuan;Yang Yifang(Naval Medical Center of PLA,Shanghai 200433,China)

机构地区：[1]海军特色医学中心,上海200433

出　　处：《中华放射医学与防护杂志》2024年第4期312-316,共5页Chinese Journal of Radiological Medicine and Protection

摘　　要：目的研究可用于制作宽能中子辐射个人防护用品的柔性屏蔽材料。方法依据理论计算结果配比加工实验用材料样品,利用^(252)Cf裂变中子和加速器单能中子开展中子屏蔽效率实验。结果给出了1.5 cm厚含10%碳化硼(B_(4)C)的乙丙橡胶板对144 keV等6个单能中子和^(252)Cf裂变中子的屏蔽效率,其中对^(252)Cf裂变中子的屏蔽效率为31.02%,对144 keV中子的屏蔽效率可达到76.9%。结论以乙丙橡胶为基材掺入B_(4)C研制的个人中子防护柔性材料对不同能量中子辐射均有一定屏蔽效果,可用于制作宽能中子个人防护用品。Objective To study the flexible shielding materials used for making personal protective equipment against wide energy neutron radiation.Methods The experimental samples were processed according to the theoretical calculation results,and the neutron shielding efficiency experiment was carried out by using^(252)Cf fission neutrons and accelerator monoenergy neutrons.Results The shielding efficiency of a 1.5 cm thick ethylene-propylene rubber plate containing 10%boron carbide against six mononuclear neutrons such as 144 keV and^(252)Cf fission neutrons was obtained,being 31.02%for^(252)Cf fission neutrons and 76.9%for 144 keV neutrons.Conclusions The personal neutron protection material,made of ethylene-propylene rubber and boron carbide,has a certain shielding efficiency against neutron radiation of different energies,and can be used to make personal protective equipment against wide energy neutron.

关 键 词：乙丙橡胶 碳化硼 宽能中子 个人防护 屏蔽效率 

分 类 号：R143[医药卫生—公共卫生与预防医学]