文献类型：期刊文献

英文题名：Fe₃O₄-doped highly electromagnetically shielded PAN-PVP composite porous carbon films

作者：Yang, Renyuan Liao, Longfeng Xu, Yuhuan Zhan, Xiao Zhang, Daohai Qin, Shuhao Liu, Shan

第一作者：Yang, Renyuan

通信作者：Zhang, DH[1];Qin, SH[1];Qin, SH[2];Liu, S[3]

机构：[1]Guizhou Minzu Univ, Sch Chem Engn, Guiyang 550025, Guizhou, Peoples R China;[2]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;[3]Guizhou Minzu Univ, Sch Mat Sci & Engn, Guiyang, Peoples R China;[4]Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Minzu Univ, Sch Chem Engn, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Minzu Univ, Sch Chem Engn, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院;

年份：2024

外文期刊名：POLYMER COMPOSITES

收录：;Scopus(收录号：2-s2.0-85211100922);WOS:【SCI-EXPANDED(收录号:WOS:001369578500001)】；

基金：This research has been granted by the National Natural Science Foundation of China Project (52163001), Guizhou Provincial Science and Technology Program Project Grant (Qiankehe Platform Talents-CXTD [2021]005, Qiankehe Platform Talents-GCC [2022]010-1, Qiankehe Fuqi [2023]001, Qiankehe Fuqi [2024]002-1, Qiankehe Platform Talents-GCC[2023]035, Qiankehe Platform Talents-CXTD[2023]003), Guizhou Minzu University Research Platform Grant (GZMUGCZX [2021]01), Central Guided Local Science and aTechnology Development Funds Project (Qiankehe Zhong Yindi [2023]035), Doctor Startup Fund of Guizhou Minzu University (Grant No. GZMUZK [2024] QD77), Green Chemistry and Resource Environment Innovation Team of Guizhou Higher Education Institutions (Guizhou Education and Technology [2022] No.13).

语种：英文

外文关键词：electromagnetic shielding; microwave absorbing materials; non-solvent induced phase separation; porous carbon film

摘要：With the wide application of modern electronic devices, the problem of electromagnetic pollution is becoming more and more serious, and the demand for efficient electromagnetic shielding materials is becoming more and more urgent. To address this problem, we homogeneously mixed polyacrylonitrile (PAN), polyvinylpyrrolidone (PVP), and triiron tetraoxide (Fe3O4) nanoparticles by solution blending, and prepared composite precursor membranes by taking advantage of the magnetic properties and good electromagnetic loss characteristics of Fe3O4, as well as the high thermal stability and film-forming properties of PAN and PVP. Subsequently, carbonized PAN-PVP/ Fe3O4 composite films with different Fe3O4 contents were successfully prepared by carbonization under high temperature inert atmosphere to convert PAN and PVP into carbon materials. It was found that the PAN-PVP/ Fe3O4 porous carbon film with 3 wt% Fe3O4 addition had a conductivity of 3.99 Smm-1 at a thickness of 0.42 mm, and an average EMI SET of 78.9 dB, SEA of 64.8 dB, and SSEt of 1838 dB/(cm2g-1) in the X-band, which is a typical wave absorbing material and can meet commercial electromagnetic shielding requirements. This work provides new ideas and methods for the research and development of polymer-based porous carbonized film as electromagnetic shielding materials.Highlights The carbon films with rich porous structure were prepared. Fe3O4 was successfully embedded into the carbon film. Carbon films have an efficient conducting network. Carbon film has excellent electromagnetic shielding performance. The main shielding mode of carbon film is absorption.