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所属单位：材料科学与技术学院

发表刊物：JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

关键字：Carbonyl iron powder EP contents In-situ polymerization Microwave absorption

摘要：In this study, novel CIP@EP composites with a core-shell structure were prepared by using the in-situ polymerization method. The phase structure, morphology and thermal stability were investigated by FTIR, XRD, SEM, TEM and TG. The results indicated that EP were densely covered on the surface of CIP particles, and with the increase of EP contents, the EP shell became thicker, which effectively strengthened the thermal stability of the materials. The magnetic and electromagnetic properties of the composites were systematically investigated. It was found that the content of EP played an important role in improving the magnetic and dielectric properties. High EP content can effectively improve the impedance matching between the dielectric and magnetic loss of the absorbers and enhance the EM wave absorption ability of the composites. This study proves that the CIP@30%EP exhibits an excellent EM wave absorption ability, which has higher value of R-L and wider absorption width than other CIP@EP composites. The CIP@30% EP has a strong reflection loss peak of -16.1 dB and wide effective absorption bandwidths of 5.4 GHz at the thickness of 2.2 mm. Furthermore, the method utilized to synthesis the CIP@EP composites can be a suitable and efficient way to prepare other spherical microwave absorption materials.

ISSN号：0304-8853

是否译文：否

发表时间：2019-09-01

合写作者：Guo, Xinlu,Lin, Haiyan,周金堂,Zuo, Yuxin,Xu, Xiangyu,,Wei, Bo,魏波,Chen, Wenjing,Qian, Kun,

通讯作者：姚正军,周金堂,姚正军