文献类型：期刊文献

英文题名：Hierarchically Flexible Polyamide Composite Films for Thermal Management and Electromagnetic Shielding

作者：Wu, Bozhen[1]; Zhu, Honghao[1]; Yang, Yuhao[1]; Zhu, Kaiqi[1]; Liu, Renrong[1]; Li, Yulin[2,3]

机构：[1] College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China; [2] Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, 200237, China; [3] Wenzhou Institute of Shanghai University, Wenzhou, 325000, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220324308)

语种：英文

外文关键词：5G mobile communication systems - Carbon films - Composite films - Electromagnetic pulse - Electromagnetic wave interference - Oxide films - Signal interference - Temperature control - Tensile strength - Thermal conductivity - Toughness

摘要：With the integration and high power of electronic devices and the rapid development of 5G and new energy, more and more applications are required for materials with good flexibility, mechanical properties and multi-functional properties. In this study, we adopted a hierarchical design reassembly strategy to fabricate high thermal conductivity (33.27 W/m·K), excellent EMI SE (63.0 dB), and good mechanical properties (tensile strength 44.5 MPa, toughness 13.8 MJ/m3) polyamide composite film. The top layer of the composite film is a graphene/graphene oxide film (GNP/GO) as the thermal conductivity and EMI shielding layer. The base layer of the composite film is a commercially available polyamide mesh to improve mechanical properties. And a dense Ni layer is deposited on the polyamide fabric through the process of electroless nickel plating, which improves the EMI shielding performance. The WPU cladding is further coated on the nickel-plated polyamide fabric to protect the cladding and bond the top and base layers at the same time. In addition, the practical application of the film in the fields of thermal management and electromagnetic shielding is also demonstrated by application experiments. ? 2022, The Authors. All rights reserved.