MXene@c-MWCNT Adhesive Silica Nanofiber Membranes Enhancing Electromagnetic Interference Shielding and Thermal Insulation Performance in Extreme Environments  

作　　者：Ziyuan Han Yutao Niu Xuetao Shi Duo Pan Hu Liu Hua Qiu Weihua Chen Ben Bin Xu Zeinhom MEl-Bahy Hua Hou Eman Ramadan Elsharkawy Mohammed AAmin Chuntai Liu Zhanhu Guo 

机构地区：[1]Key Laboratory of Materials Processing and Mold(Zhengzhou University),Ministry of Education,National Engineering Research Center for Advanced Polymer Processing Technology,Zhengzhou University,Zhengzhou 450002,People's Republic of China [2]School of Nano-Tech and Nano-Bionics,University of Science and Technology of China,Hefei 230026,People's Republic of China [3]Key Laboratory of Multifunctional Nanomaterials and Smart Systems,Advanced Materials Division,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,People's Republic of China [4]Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an 710072,People's Republic of China [5]College of Chemistry&Green Catalysis Center,Zhengzhou University,Zhengzhou 450001,People's Republic of China [6]Mechanical and Construction Engineering,Faculty of Engineering and Environment,Northumbria University,Newcastle Upon Tyne NE18,UK [7]Department of Chemistry,Faculty of Science,Al-Azhar University,Nasr City 11884,Cairo,Egypt [8]Department of Chemistry,Faculty of Science,Northern Border University,Arar,Saudi Arabia [9]Department of Chemistry,College of Science,Taif University,P.O.Box 11099,21944 Taif,Saudi Arabia

出　　处：《Nano-Micro Letters》2024年第10期82-98,共17页纳微快报（英文版）

基　　金：the China Scholarship Council(2021);the Deanship of Scientific Research at Northern Border University,Arar,KSA for funding this research work through the project number“NBU-FPEJ-2024-249-03”.

摘　　要：A lightweight flexible thermally stable composite is fabricated by com-bining silica nanofiber membranes(SNM)with MXene@c-MWCNT hybrid film.The flexible SNM with outstanding thermal insulation are prepared from tetraethyl orthosilicate hydrolysis and condensation by electrospinning and high-temperature calcination;the MXene@c-MWCNT_(x:y)films are prepared by vacuum filtration tech-nology.In particular,the SNM and MXene@c-MWCNT_(6:4)as one unit layer(SMC_(1))are bonded together with 5 wt%polyvinyl alcohol(PVA)solution,which exhibits low thermal conductivity(0.066 W m^(-1)K^(-1))and good electromagnetic interference(EMI)shielding performance(average EMI SE_(T),37.8 dB).With the increase in func-tional unit layer,the overall thermal insulation performance of the whole composite film(SMC_(x))remains stable,and EMI shielding performance is greatly improved,especially for SMC_(3)with three unit layers,the average EMI SET is as high as 55.4 dB.In addition,the organic combination of rigid SNM and tough MXene@c-MWCNT_(6:4)makes SMC_(x)exhibit good mechanical tensile strength.Importantly,SMC_(x)exhibit stable EMI shielding and excellent thermal insulation even in extreme heat and cold environment.Therefore,this work provides a novel design idea and important reference value for EMI shielding and thermal insulation components used in extreme environmental protection equipment in the future.

关 键 词：SiO_(2)nanofiber membranes MXene@c-MWCNT Composite film Thermal insulation Electromagnetic interference shielding 

分 类 号：TB383.2[一般工业技术—材料科学与工程]