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发布时间：2019-03-12

论文类型：期刊论文

发表时间：2018-03-01

发表刊物：JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY

收录刊物：Scopus、EI、SCIE

卷号：34

期号：3

页面范围：496-502

ISSN号：1005-0302

关键字：Dielectric loss; Magnetic loss; Spray granulation method; Impedance match

摘要：The microwave absorbents of Fe and C nanoparticles as magnetic loss and dielectric loss material respectively were composited with the polyvinyl alcohol (PVA) as binder by spray granulation method. The electromagnetic parameters of Fe and C composite particles were analyzed by vector network. The complex permittivity and magnetic permeability of Fe and C composite particles matched well with increasing C nanoparticle content, and then the microwave loss property was improved. A minimum reflection loss (RL) of 42.7 dB at 3.68 GHz for a composite with 4.6 mm in thickness can be obtained when the content ratio of the C nanoparticles, the modified Fe nanoparticles and the PVA is 21:49:30 (Sample 3). (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.