二氧化硅改性片状铁粒子的微波吸收性能  

Microwave-Absorbing Behavior of Silica Modified Platelet Iron Particles

作　　者：孟凡君[1] 茹淼焱[1] 刘爱祥[1] 刘宗林[1] 

机构地区：[1]山东大学化学与化工学院

出　　处：《无机化学学报》2003年第2期211-214,共4页Chinese Journal of Inorganic Chemistry

摘　　要：The preparation and microwave absorbing behavior of micrometric silica modified platelet iron particles (SMPLIP) were investigated. Through precipitation, hydrothermal reaction, silica modification and reduction with hydrogen, micrometric porous SMPLIP were yielded. The permittivity values of SMPLIP had been significantly decreased due to the presence of silica. Measurements and calculations showed that a 1.93mm thick sample containing SMPLIP as much as 60%by weight was capable of absorbing X band(8.2～12.4GHz) microwaves with reflection loss being greater than -10dB within the frequency range of 8.2～11.36GHz, while the maximum reflection loss was -14.8dB at 9.4GHz. The results had also shown that it was practicable to prepare thin, light weight microwave absorbent with SMPLIP.The preparation and microwave-absorbing behavior of micrometric silica-modified platelet iron particles (SMPLIP) were investigated. Through precipitation, hydrothermal reaction, silica-modification and reduction with hydrogen, micrometric porous SMPLIP were yielded. The permittivity values of SMPLIP had been significantly decreased due to the presence of silica. Measurements and calculations showed that a 1.93 mm thick sample containing SMPLIP as much as 60% by weight was capable of absorbing X band (8.2 similar to 12.4 GHz) microwaves with reflection loss being greater than - 10 dB within the frequency range of 8.2 similar to 11.36 GHz, while the maximum reflection loss was - 14.8 dB at 9.4 GHz. The results had also shown that it was practicable to prepare thin, light-weight microwave absorbent with SMPLIP.

关 键 词：二氧化硅 改性 片状铁粒子 微波吸收性能 水热反应 微波吸收剂 

分 类 号：TN015[电子电信—物理电子学] O614.811[理学—无机化学]