材料科学
复合材料
复合数
反射损耗
微波食品加热
吸收(声学)
介电常数
聚苯胺
导电聚合物
金属
聚合物
电介质
聚合
物理
量子力学
冶金
光电子学
作者
Zhixuan He,Yang Fang,Xiaojuan Wang,Hua Pang
标识
DOI:10.1016/j.synthmet.2010.12.020
摘要
The PANI/carbonyl iron powders (CIP)/Fe3O4 composite was synthesized by mechanical mixing PANI/CIP composite with PANI/Fe3O4 composite with mass ratio of 7:3. The electromagnetic (EM) properties of these composites were studied at 0.5–18 GHz. Compared with PANI/CIP and PANI/Fe3O4 composites, the PANI/CIP/Fe3O4 composites show enhanced EM wave absorption at high frequency range, and the maximum reflection loss is −48.3 dB at 9.6 GHz with a thickness of 1.76 mm. There is no obvious chemical interaction happened during mixing, which retains the magnetic properties of PANI/CIP and PANI/Fe3O4 components. While the conducting channels of the PANI coatings and the metal–polymer interfaces are partly destroyed, which reduces the permittivity and improves the impedance match, hence results in good EM wave absorption for PANI/CIP/Fe3O4 composite.
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