金属纤维/聚合物复合材料的制备及其电磁屏蔽效能（英文）  

Preparation and Electromagnetic Shielding Effectiveness of Metal Fibers/Polymer Composite

作　　者：王建忠[1] 马军[1] 支浩[1] 汤慧萍[1] 

机构地区：[1]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《稀有金属材料与工程》2017年第1期73-77,共5页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51301141,51134003);Youth Scientific Star Item of Shaanxi Province(2014KJXX-24)

摘　　要：填充金属纤维的复合材料由于具有优异的电磁屏蔽效能(EMSE)而广泛应用于电磁干扰领域。本研究采用浸渗和机械搅拌法分别制备了316L纤维/环氧树脂和Cu纤维/环氧树脂2种复合材料,并测试了其电磁屏蔽效能。研究表明,当316L纤维长径比从200增加到1000时,316L纤维/环氧树脂复合材料的电磁屏蔽效能逐渐增大,而当长径比从1000增加到3000时,其复合材料的电磁屏蔽效能迅速下降;当316L纤维的质量分数从10%增加到25%时,复合材料的电磁屏蔽效能逐渐增大。对于316L纤维/环氧树脂复合材料而言,316L纤维的最佳参数:纤维直径为8μm、含量为25%、长径比为1000,其复合材料的电磁屏蔽效能最高可达–78 d B。对于Cu纤维/环氧树脂复合材料而言,Cu纤维的最佳参数:纤维直径为120μm、含量为2.0%。Composite containing metal fibers are applied widely in the field of electromagnetic interference for its excellent electromagnetic shielding effectiveness（EMSE）. In the present study, two kinds of composite, 316 L fibers/epoxy resin composite and Cu fibers/epoxy resin composite, were achieved using infiltration and mechanical stirring, respectively, The EMSE of the composite was assessed. The results show that the EMSE of 316 L fibers/epoxy resin composite increases gradually with the aspect ratio of fibers increasing from 200 to 1000, while it decreases quickly with that from 1000 to 3000. Furthermore, the EMSE of the composite increases gradually as the content of fibers increases from 10 wt% to 25 wt%. Additionally, for the 316 L fibers/epoxy resin composite, the optimum parameters of 316 L fibers are the diameter of 8 μm, the content of 25wt% and the aspect ratio of 1000,and the highest EMSE of the composite is about –78d B. For the Cu fibers/epoxy resin composite, the optimum parameters of Cu fibers are the diameter of 120 μm and the content of 2.0 wt%.

关 键 词：复合材料 电磁干扰(EMI) 金属纤维 环氧树脂 电磁屏蔽效能(EMSE) 

分 类 号：TB332[一般工业技术—材料科学与工程]