Preparation and Properties of Glass with High Transmittance and Intense Gamma Ray Shielding  

高透过率强伽马射线屏蔽玻璃的制备及其性能

作　　者：ZHANG Meilun CAO Zhenbo YANG Shengyun ZHANG Yang HAN Yu QIU Fu ZHOU You ZHENG Jingming LIU Hui JIA Jinsheng 张梅伦;曹振博;杨胜赟;张洋;韩玉;邱福;周游;郑京明;刘辉;贾金升(中建材光子科技有限公司,山东枣庄277000;中国建筑材料科学研究总院有限公司,北京100000)

机构地区：[1]China National Building Material Photonics Technology Co.,Ltd.,Zaozhuang 277000,Shandong,China [2]China Building Materials Academy Co.,Ltd.,Beijing 100000,China

出　　处：《硅酸盐学报》2024年第10期3301-3310,共10页Journal of The Chinese Ceramic Society

基　　金：枣庄英才集聚工程专项经费(曹振博);中建材光子科技有限公司技术开发项目(GZ-2201核工业用高光谱透过防辐射耐辐照玻璃研制)。

摘　　要：Introduction As a kind of high-energy electromagnetic radiation,gamma rays can lead to radiation effect and environmental pollution.To ensure the reliability and safety utilization of gamma radiations in different areas,materials with reliable gamma shielding performances should be developed.The existing efforts are to use glasses as alternative for the conventional radiation shielding materials.As a typical window material,glass itself has attracted wide attention due to its unique chemical and physical advantages.Among them,lead-based radiation shielding materials are widely used in the field of ionizing radiation protection due to their reliable physical properties.In the nuclear industry and high energy physics laboratories,different materials can be used for temporary or permanent shielding.The lead-based glass doped with heavy metal oxide PbO is widely used in the field of radiation shielding for a long time with reliable light transmission properties,which facilitates the observation and monitoring of radiation areas.In this paper,three kinds of transparent silicate glass with different PbO contents were prepared by a high-temperature melting forming method.The gamma-rays protection abilities of the three kinds of glass were investigated through experimental and thermotical methods.The chemical and thermal stability of the glass were also analyzed.In addition,the influence mechanism of the structure and performance differences of the three kinds of glass was also discussed.Methods Analytical pure quartz sand(SiO_(2),purity 99.5%,in mass,the same below),lead monoxide(PbO,purity 99.0%),potassium nitrate(KNO3,purity 99.0%)and sodium nitrate(NaNO3,purity 99.0%)were selected as raw materials for preparation of three kinds of gamma-rays shielding glass materials by a high-temperature melting method.An appropriate amount of raw materials was thoroughly mixed and added to 3 L quartz crucible and heated in air at 1200℃.Then the raw materials were melted at 1250℃for 14 h.The uniform melt was quickly poured into 为了研发具有高透过率和强伽马射线屏蔽性能的新型玻璃材料,以SiO_(2)-PbO-M_(2)O(M为碱金属元素)体系的铅硅酸盐玻璃为基质,设计并制备了几种不同PbO含量的伽马射线屏蔽铅玻璃。对屏蔽玻璃的伽马射线屏蔽性能进行了理论模拟与实验测试,通过密度测试、膨胀系数测定仪、Fourier红外光谱、Raman光谱和分光光度计对样品进行了表征,并探讨了氧化物组分(PbO、K_(2)O和Na_(2)O)对屏蔽玻璃结构和性能的影响机理。测试结果表明:PbO含量为50%(质量分数)的屏蔽玻璃对60Co伽马射线的屏蔽率可达到50%,且在400~800nm波长范围内线性透过率可达到85%以上。此外,该屏蔽玻璃还具有良好的化学稳定性和热稳定性。本工作可以为开发用于核工业、医学诊断和原子科学研究等领域的高性能屏蔽玻璃材料提供有益的参考和指导。

关 键 词：TRANSMITTANCE gamma rays radiation shielding GLASS 

分 类 号：TQ171.1[化学工程—玻璃工业]