Design and development of advanced BaTiO3/MWCNTs/PVDF multi-layered systems for microwave applications

被引：31

作者：

Cacciotti, Ilaria ^{[1
]}

Valentini, Manlio ^{[2
]}

Raio, Michela ^{[1
,3
]}

Nanni, Francesca ^{[3
]}

机构：

[1] Univ Rome Niccolo Cusano, Engn Dept, INSTM RU, Via Don Carlo Gnocchi 3, I-00166 Rome, Italy

[2] Tecnosens Srl, Via F Antolisei 25, I-00173 Rome, RM, Italy

[3] Univ Roma Tor Vergata, Enterprise Engn Dept, INSTM RU, Via Politecn 1, I-00133 Rome, Italy

来源：

COMPOSITE STRUCTURES | 2019年 / 224卷

关键词：

Polyvinylidene fluoride; Barium titanate; Multiwalled carbon nanotubes (MWCNTs); Electromagnetic absorbers; DIFFERENTIAL SCANNING CALORIMETRY; WALLED CARBON NANOTUBES; POLY(VINYLIDENE FLUORIDE); DIELECTRIC-CONSTANT; CRYSTALLINE PHASES; FILMS; COMPOSITES; NANOPARTICLES; MORPHOLOGY; PVDF;

D O I：

10.1016/j.compstruct.2019.111075

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Development of absorbing materials at microwaves is of great interest in electronic and military applications, tuning their electromagnetic (EM) properties by varying their composition. In this paper, composite films based on polyvinylidene fluoride (PVDF), barium titanate (BaTiO3) nanoparticles and/or multiwalled carbon nanotubes (MWCNTs), were prepared. The innovative idea is to use strong dielectric (BaTiO3) and conducive (MWCNTs) fillers to tune the complex permittivity of the resulting material at microwaves (8.2-12.4 GHz). Moreover, on the basis of EM characterization, specific compositions were selected to produce multi-layered slabs by film stacking, exploiting the results of a numerical simulation, which provided information about the required compositions and thicknesses, and the order of the different layers. The designed slabs were realised and their properties compared with the simulated ones. It has been demonstrated that it is possible to gain the desired electromagnetic absorbing performance by alternating different compositions to suit a specific EM design.

引用

页数：10

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