氧化铈/玄武岩/环氧树脂基伽马屏蔽复合材料的制备及其性能  

Preparation and properties of cerium oxide/basalt powder/epoxy resin-based gamma shielding composites

作　　者：陶醉 谭松波 陈锦路 杨暄 金梁程龙 陈小丽 彭国文 TAO Zui;TAN Songbo;CHEN Jinlu;YANG Xuan;JIN Liangchenglong;CHEN Xiaoli;PENG Guowen(School of Resources Environment and Safety Engineering,University of South China,Hengyang 421001,China;School of Chemistry and Chemical Engineering,University of South China,Hengyang 421001,China;Engineering Technology Research Center for Decommissioning Treatment of Uranium Tailings Pond in Hunan Province,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学资源环境与安全工程学院,衡阳421001 [2]南华大学化学化工学院,衡阳421001 [3]南华大学湖南省铀尾矿库退役治理工程技术研究中心,衡阳421001

出　　处：《中国有色金属学报》2025年第1期293-305,共13页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(42377076);湖南省自然科学基金资助项目(2023JJ50129)。

摘　　要：制备了以环氧树脂为基体,氧化铈和玄武岩粉为填料的复合材料,在59.5 keV、80 keV和662keV光子能量下对复合材料的伽马屏蔽性能进行了评测。评测结果表明:氧化铈和玄武岩粉提高了复合材料的屏蔽性能,特别在59.5 keV时,复合材料的质量衰减系数为3.287 cm^(2)/g,是纯环氧树脂的23倍。力学性能测试结果表明,引入氧化铈和玄武岩粉末可显著提高环氧树脂的弹性模量和抗弯曲强度,填充20%CeO_(2)和30%玄武岩粉(质量分数)时,复合材料的弹性模量和抗弯曲强度分别达到1524 MPa、98.87MPa,比纯环氧树脂分别提升62%和20%。同时,随着填料比例的增加,复合材料的热稳定性也变得更好。由于CeO_(2)/BP/EP复合材料具有好的辐射屏蔽性能、良好的热稳定性和高力学性能等优点,是核工业领域中具有前途的材料。Composite materials were prepared using epoxy resin as the matrix and cerium oxide and basalt powder as fillers.The gamma shielding performance of the composite materials was evaluated at photon energies of 59.5 keV,80 keV and 662 keV.The results show that the inclusion of cerium oxide and basalt powder enhances the shielding performance of the composite materials,especially at 59.5 keV,where the mass attenuation coefficient of composite material is 3.287 cm^(2)/g,which is 23 times higher than that of pure epoxy resin.The mechanical property test results show that the introduction of cerium oxide and basalt powder can significantly improve the elastic modulus and flexural strength of the epoxy resin,and the elastic modulus and flexural strength of the composites reaches 1524 MPa and 98.87 MPa when filled with 20%of CeO_(2) and 30%of basalt powder,which are enhanced by 62%and 20%,respectively,compared with that of the pure epoxy resin.Moreover,as the filler proportion increases,the thermal stability of the composite materials improves.These results suggest that the studied CeO_(2)/BP/EP composite materials possess favorable radiation shielding performance,good thermal stability,and high mechanical properties,rendering them promising materials in the field of nuclear industry.

关 键 词：氧化铈 玄武岩粉 环氧树脂 Γ射线 辐射屏蔽 

分 类 号：TF11.31[冶金工程—冶金物理化学]