文献类型：期刊文献

英文题名：Fabrication and investigation of graphene-loaded triiron tetraoxide/silicone-rubber electromagnetic shielding composites based on static magnetic-field-induced orientation

作者：Guo, Jiaxing Zhou, Qin Xie, Jikai Yin, Hong Hao, Zhi Luo, Zhu Yang, Le Zhang, Cheng

第一作者：Guo, Jiaxing

通信作者：Hao, Z[1]

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China;[2]Guizhou Univ, Coll Mech Engn, Guiyang, Peoples R China;[3]Guizhou Inst Technol, Sch Mat Sci & Energy Engn, Guiyang, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China.

年份：2024

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20240815618755);Scopus(收录号：2-s2.0-85185683955);WOS:【SCI-EXPANDED(收录号:WOS:001162705700001)】；

基金：The Science and Technology Department of Guizhou Province, Grant/award number: [2023] 315; Scientific Research Project of Introducing Talents of Guizhou University, Grant/award number: [2020] 53.

语种：英文

外文关键词：electromagnetic shielding; Fe3O4; graphene; silicone rubber composites

摘要：Graphene-loaded triiron tetraoxide/silicone-rubber composites containing highly loaded graphene-loaded Fe3O4 (Fe3O4@RGO) particles were fabricated using static magnetic field-induced alignment. The Fe3O4@RGO particles were characterized through Fourier transform infrared, x-ray diffraction, SEM, and XPS analyses. Subsequently, the influence of added material and the strength of the magnetic field on the alignment distribution of the filler were examined through a synergistic combination of SEM and Raman spectroscopy. The electrical conductivity and electromagnetic shielding properties of the composites were assessed. The electrical conductivity of the composites increased with increasing filler addition, the 25 wt% filler mixture had the fastest curing rate and the maximum torque, and the continued increase in filler addition led to the occurrence of many defects. Concurrently, the alignment distribution of the filler progressively enhances with the augmentation of magnetic field strength. The composites synthesized at 180 mT exhibit the most substantial alignment, facilitating the establishment of effective conductive pathways. This results in a notable enhancement in electromagnetic shielding effectiveness, approximately 400% greater than that of pure silicone rubber and around 40% higher than that of non-aligned composites. This approach introduces a novel concept for shaping the structural design of flexible electromagnetic shielding materials.