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研究了电磁波屏蔽材料Ni／聚乙烯复合材料在50MHz-IGHz频率范围内的电磁特性。研究结果表明：Ni含量小于70wt％时，频率和成分对磁导率实部μ’的影响不大；Ni含量大于70wt％时，因材料中非磁性材料聚乙烯形成的等效气隙足够长，使Ni／聚乙烯复合材料的磁导率实部μ’随着频率的增加而降低。Ni含量小于70wt％时，频率和含量对磁导率虚部μ”的影响较小，μ”值较小；Ni含量大于70wt％时，μ”随Ni含量和频率的变化较大，其原因是不同的Ni含量影响磁滞损耗和磁性涡流损耗的大小。
The electromagnetic properties of electromagnetic shielding material Ni / polyethylene composites in the frequency range of 50MHz-IGHz were studied. The results show that the frequency and composition have little effect on the real part μ ’of Ni when the Ni content is less than 70wt%. When the Ni content is more than 70wt%, the equivalent air gap formed by the non-magnetic polyethylene is long enough , So that Ni / polyethylene composite real part of permeability μ ’decreases with increasing frequency. When the content of Ni is less than 70wt%, the influence of frequency and content on the imaginary part μ “of magnetic permeability is small and the value of μ” is small. When the content of Ni is above 70wt%, the variation of μ "with the content and frequency of Ni is larger The Ni content affects the hysteresis loss and the size of the magnetic eddy current loss.