Surface micro-arrays enhancing electromagnetic interference shielding of polydimethylsiloxane/multiwalled carbon nanotubes nanocomposites  

作　　者：Ke Jiang Zhi Chen Ji Yu Chen Zheng Shan Huang Ming Wang 

机构地区：[1]Chongqing Key Laboratory of Soft-Matter Material Manufacturing,School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China [2]School of Mechanics,Civil Engineering and Architectures,Northwestern Polytechnical University,Xi’an 710072,China [3]Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory),Jieyang 515200,China

出　　处：《Nano Research》2025年第1期508-519,共12页纳米研究（英文版）

基　　金：National Natural Science Foundation of China(No.52173264);Natural Science Foundation Project of Chongqing(No.cstc2024ycjh-bgzxm0005);Fundamental Research Funds for the Central Universities(No.SWU-XDJH_(2)02314)for financial support.

摘　　要：Herein,the electromagnetic shielding performance of surface concave-convex(SC)and zig-zag micro-arrays was studied by using a simulation prediction and a three-dimensional(3D)printing custom model.Firstly,surface stripe concaveconvex(SSC)and surface cylindrical concave-convex(SCC)micro-arrays with or without zig-zag micro-arrays are designed,and their shielding performance is simulated in multi-bands(C-,X-band).The multiwalled carbon nanotubes/polydimethylsiloxane composites(MWCNT/PDMS)with different SC structures and different electrical conductivity are molded in acrylonitrile-butadiene-styrene copolymer(ABS)molds which are printed by a 3D printer.The results show that the electromagnetic interference shielding effectiveness(EMI SE)of the samples can be enhanced by constructing the SC micro-arrays with zig-zag micro-arrays,and improving with the increase of conductivity and frequency.In addition,the shielding mechanism of the SC-MWCNT/PDMS composites is investigated and discussed by an electromagnetic simulation.

关 键 词：surface micro-arrays electrical properties electromagnetic interference(EMI)shielding three-dimensional(3D)printing 

分 类 号：TB383[一般工业技术—材料科学与工程]