In the radiation protection application, the metal-polymer composites have been developed for their radiation shielding properties. In this research, the elastomer composites doped by 10 μm and100nm size of lead, bismuth and tungsten particles as filler with 30 and 60 wt percentages were prepared. To survey the shielding properties of the polymer composites using gamma-ray emitted from 152Eu and 137Cs sources, the gamma flux was measured by using NaI(Tl) detector, then the linear attenuation coefficient was calculated. Also, the Monte Carlo simulation (MCs) method was used. The results showed a direct relationship between the linear attenuation coefficients of the absorbent and filler ratio. Also, the decrease in the particle size of the shielding material in each weight percentage improved the radiation shielding features. When the dimension of the particles was in the order of nano-size, more attenuation was achieved. At low energies used for medical diagnostic X-ray applications due to the predominance of the photoelectric effect, bismuth and lead were suitable selection as filler.

在辐射防护应用中，金属-聚合物复合材料因其辐射屏蔽性能而得到开发。本研究制备了分别掺杂10μm和100nm尺寸的铅、铋和钨颗粒作为填料，其重量百分比分别为30和60％的弹性体复合材料。为了利用152Eu和137Cs源发射的伽马射线研究聚合物复合材料的屏蔽性能，使用NaI(Tl)探测器测量伽马通量，然后计算线性衰减系数。此外，还使用了蒙特卡罗模拟 (MCs) 方法。结果表明吸收剂和填料比的线性衰减系数之间存在直接关系。此外，每个重量百分比的屏蔽材料的粒径减小改进了辐射屏蔽特性。当粒子的尺寸在纳米级时，可以实现更大的衰减。由于光电效应的优势，在用于医学诊断 X 射线应用的低能量下，铋和铅适合用作填充剂。