何 楠1,陈 乐2,周 旺1,郝万军2,林曦鹏1,陈海生1,3
何楠,陈乐,周旺,等.多孔结构对硫氧镁水泥吸波性能的影响[J].混凝土与水泥制品,2021(11):34-38.
HE N,CHEN L,ZHOU W,et al.The Influence of Porous Structure on the Microwave Absorbing Properties of Magnesium Oxysulfide Cement[J].China Concrete and Cement Products,2021(11):34-38.
多孔结构对硫氧镁水泥吸波性能的影响
何 楠1,陈 乐2,周 旺1,郝万军2,林曦鹏1,陈海生1,3
何楠,陈乐,周旺,等.多孔结构对硫氧镁水泥吸波性能的影响[J].混凝土与水泥制品,2021(11):34-38.
HE N,CHEN L,ZHOU W,et al.The Influence of Porous Structure on the Microwave Absorbing Properties of Magnesium Oxysulfide Cement[J].China Concrete and Cement Products,2021(11):34-38.
摘 要:采用物理发泡技术制备了硫氧镁水泥复合吸波多孔材料,并对其进行了孔径特征和电磁参数测试。基于有效介质理论和传输线理论,模拟了此多孔材料对8~18 GHz频段电磁波的吸收性能。结果表明:多孔材料的孔隙率和气孔的平均孔径随设计密度的增大而减小;多孔结构可以降低材料的有效介电常数,提高阻抗匹配性能;数值模拟吸波性能曲线的变化规律与测试结果基本一致。
Abstract: A composite microwave absorbing material of porous magnesium oxysulfide cement was prepared by physical foaming technology. The pore size characteristics and electromagnetic parameters of porous materials were measured and analyzed. Based on the the effective medium theory and transmission line theory, the electromagnetic wave absorption performance of porous materials in the 8~18 GHz frequency band was simulated. The results show that with the increasing density, the porosity and the average pore size of the pores in the porous material decrease. The porous structure can reduce the effective dielectric constant of the material and improve the impedance matching performance. The curve of absorbing property of numerical simulation materials is consistent with the test results.
版权所有:中国混凝土与水泥制品网 苏ICP备10086386号 网站建设:中企动力 苏州