Anti-high-energy Radiation Nano-lead Composite Materials Research

With the development of science and technology, radiation was more deeply recognized and used. Especially, the application of ionizing radiation largely benefited people, but, it simultaneously also caused enormous harm, which made people felt panic when talking radiation. So preparing shielding materials of radiation and reducing its harmful effect as largely as possible can, when making use of radiation in various fields, are necessary.The article includes three aspects as following:1. Summarized the application of ionizing radiation and the history and presentcondition of development shielding materials of radiation.2. We prepared different types of low-density shielding composite materials to high-energy radiation, including different resin and different quantity of lead with different content of nano-lead and nano-lead sulphate, in methods of ion exchange column and magnetic stirrer, respectively, making strong acidic cation exchange resin of styrene system (001×7), weak acidic cation exchange resin of acrylic acid (110) , macroreticular weak acidic cation exchange resin of acrylic acid (D152) as temlate. By TEM (transmission electron microscope), we measured the size of nanoparticles, lead or lead sulfate in the samples. By electron diffraction picture, we calculated the pattern of the particles piledup or crystal forms.3. High-energy X andβradiation produced from cyclotron respectively past through the samples, and the dose of ray before and after through the samples was measured by DOSE METER NE TECHNOLOGY LTD. From the data of dose measured, the shielding effect of the samples to high-energy X-ray and β-ray radiation was calculated. The correlations between the density, size and shape of the particles of nano-lead and nano-lead sulphate in the samples and their shielding effect to high-energy X and beta radiation were analyzed. Results indicated, at the same terms of resin and consist of equal lead element, the samples, including nano-lead or nano-lead sulphate, have better high-energy radiation protection ability than which added general lead or normal lead sulphate; We demonstrated the ability of absorption high-energy X-ray radiation is not only determined by the lead or lead sulfate...