辐射防护2024，Vol.44Issue(6)：695-704,10.
无铅柔性高分子复合材料X射线屏蔽性能研究
X-ray shielding properties of lead-free flexible polymer composite materials
摘要
Abstract
The demand for environment friendly non-Pb X-ray shielding materials in medical diagnosis is increasing.Therefore,novel shielding materials of TPV combined with WO3 or Gd2 O3 or Bi2 O3 are successfully prepared by melt blending and characterized microscopically.Properties of the composite materials are characterized by scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),and X-ray diffraction(XRD).Results show that the functional particles are uniformly dispersed in the matrix without obvious agglomeration;the functional particles do not form any chemical bonds with the matrix;and the crystal structures of the functional particles also remain unchanged.Tests of mechanical properties show that TPV/WO3 is the best,with a tensile strength of 4.65 MPa,a fracture elongation of 544.76%,and a Shore hardness of 73 HA at the doping ratio of 100∶100.The shielding experiment for 100 kV tube voltage X-ray shows that both Gd2 O3 and WO3 can meet the minimum lead equivalence requirement(0.25 mmPb),with WO3 reaching the highest 0.33 mmPb.MCNP simulation is basically consistent with the experiment,and the data show that X-ray absorption ranges of Gd2 O3 and WO3 are located in the"weak absorption region"of Pb.In summary,this group of shielding materials exhibit good protective performance against 100 kV tube voltage X-ray and have potential applications in fields such as nuclear medicine and nuclear industry.关键词
X射线/辐射防护/氧化钆/氧化钨/氧化铋Key words
X-ray/radiation protection/gadolinium oxide/tungsten oxide/bismuth oxide分类
能源科技引用本文复制引用
王博宇,张栋栋,袁继龙,陆地,王琦,刘洋..无铅柔性高分子复合材料X射线屏蔽性能研究[J].辐射防护,2024,44(6):695-704,10.基金项目
西安市科技计划项目(22GXFW0042) （22GXFW0042）
陕西高校青年创新团队. （）
