石墨改性硫氧镁水泥复合材料的吸波性能  

Wave Absorbing Properties of Graphite ModifiedMagnesium Oxysulfate Cement Composite

作　　者：崔宝栋 刘军[1] 李瑶 杨元全 CUI Baodong;LIU Jun;LI Yao;YANG Yuanquan(ShenYang LiGong University,School of Materials Science and Engineering,Shenyang 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159

出　　处：《材料科学与工程学报》2023年第3期522-526,共5页Journal of Materials Science and Engineering

基　　金：辽宁省中央引导地方科技发展专项资助项目(2020JH6/10500047)。

摘　　要：在硫氧镁水泥的基础上,掺入石墨改性。本实验研究了0%~25%石墨掺入量对改性后硫氧镁水泥的抗压强度、抗折强度、物相结构和吸波性能。结果表明:掺入对应氧化镁含量10%石墨的硫氧镁水泥基抗折强度最高,在28 d保持在12.2 MPa,与此同时抗压强度为53.4 MPa,且吸波性能达到最佳,在16.3 GHz处反射率峰值达到-24 dB,在12~18 GHz波段下,整体反射率均小于-7 dB,其中反射率在-10 dB的有效吸收带宽占整体测量范围的73%。On the basis of magnesium oxysulfate cement,graphite was added for modification.In this experiment,the compressive strergth,flexural strength,phase structure and wave absorption properties of modified magnesium oxysulfate cement with 0%-25%graphite incorporation were studied.The results show that the corresponding magnesium oxysulfate content has the highest discount strength,maintained at 12.2 MPa in 28 days,the compressive strength is 53.4 MPa and the best wave absorption performance.At 16.3 GHz,the reflectivity peak reaches-24 dB.At 12-18 GHz band,the overall reflectance is less than-7 dB,and the effective absorption bandwidth of reflectivity at-10 dB accounts for 73%of the overall measurement range.

关 键 词：硫氧镁水泥 石墨 吸波性能 517相 

分 类 号：TQ172[化学工程—水泥工业] TB383[化学工程—硅酸盐工业]