Ultrathin flexible poly(vinylidene fluoride)/MXene/silver nanowire film with outstanding specific EMI shielding and high heat dissipation

被引：246

作者：

Cheng, Haoran ^{[1
]}

Pan, Yamin ^{[1
]}

Chen, Qiang ^{[2
]}

Che, Renchao ^{[3
,4
]}

Zheng, Guoqiang ^{[1
]}

Liu, Chuntai ^{[1
]}

Shen, Changyu ^{[1
]}

Liu, Xianhu ^{[1
]}

机构：

[1] Zhengzhou Univ, Henan Prov Ind Technol Res Inst Resources & Mat, Natl Engn Res Ctr Adv Polymer Proc Technol,Minist, Sch Mat Sci & Engn,Key Lab Adv Mat Proc & Mold, Zhengzhou 450002, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[3] Fudan Univ, Dept Mat Sci, Lab Adv Mat, Shanghai 200438, Peoples R China

[4] Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat iChem, Shanghai 200438, Peoples R China

来源：

ADVANCED COMPOSITES AND HYBRID MATERIALS | 2021年 / 4卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Polymer-matrix composites (PMCs); Synergism; Electric conductivity; Electromagnetic interference shielding; BLACK COMPOSITES PRIOR; ELECTRICAL-CONDUCTIVITY; CARBON; ABSORPTION; NANOCOMPOSITES; FRAMEWORK; BEHAVIOR; SPHERES; DENSITY; FOAMS;

D O I：

10.1007/s42114-021-00224-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Herein, ultrathin flexible poly(vinylidene fluoride) (PVDF) composite films with MXenes and silver nanowires (AgNWs) were prepared via solution casting method. Due to the synergistic effects induced by MXene/AgNW network, the electrical conductivity, thermal conductivity, and electromagnetic interference (EMI) shielding of PVDF/MXene/AgNW films were higher than the corresponding PVDF/MXene and PVDF/AgNW films, and the values of PVDF/MXene/AgNW films at 300 mu m thickness were reached 1.08 S/m, 0.78 W/(mK), and 25.87 dB, respectively. Additionally, due to the ultrathin thickness, the high specific shielding value of 1091 dB cm(2)/g was achieved. Moreover, the total shielding effectiveness increased from 19.31 to 41.26 dB as the thickness was increased from 150 to 600 mu m. The main EMI shielding mechanism is contribution to the absorption. The possible synergistic mechanisms for enhancing EMI shielding and mechanical performance are discussed. This work offers a promising solution for EMI shielding challenges in modern smaller and smaller wearable devices.

引用

页码：505 / 513

页数：9

共 54 条

[41] Hydrogenated TiO2 Nanocrystals: A Novel Microwave Absorbing Material [J].