Electromagnetic shielding properties of epoxy composites with hybrid filler nanocarbon/BaTiO3

被引：28

作者：

Vovchenko, Ludmila ^{[1
]}

Lozitsky, Oleg ^{[1
]}

Matzui, Ludmila ^{[1
]}

Oliynyk, Viktor ^{[2
]}

Zagorodnii, Volodymyr ^{[2
]}

Skoryk, Mykola ^{[3
]}

机构：

[1] Taras Shevchenko Natl Univ Kyiv, Dept Phys, Volodymyrska Str 64-13, UA-01601 Kiev, Ukraine

[2] Taras Shevchenko Natl Univ Kyiv, Dept Radiophys Elect & Comp Syst, Volodymyrska Str 64-13, UA-01601 Kiev, Ukraine

[3] NAS Ukraine, GV Kurdyumov Inst Met Phys, Vernadskiy St 36, Kiev, Ukraine

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 240卷

关键词：

Graphite nanoplatelets; Nanocomposite; Electrical conductivity; Permittivity; Electromagnetic shielding; MICROWAVE-ABSORPTION; DIELECTRIC-PROPERTIES; COMPLEX PERMITTIVITY; CARBON NANOTUBES; WAVE ABSORPTION; GRAPHITE; PERFORMANCE; REFLECTION; BLENDS; FIBER;

D O I：

10.1016/j.matchemphys.2019.122234

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The investigation of the electromagnetic shielding properties of composites based on epoxy resin L285 and hybrid filler graphite nanoplatelets/BaTiO3 particles (GNP/BT) has been performed in the frequency range of 1-67 GHz. The experimental study involved measuring direct current (DC) conductivity, complex permittivity (versus frequency), and shielding properties of such composite materials with 0, 3, 5 and 6 wt% contents of graphite nanoplatelets and 35 wt% of BaTiO3 particles in the composite. The significant increase of permittivity was observed in the ternary epoxy composites GNP/BT/epoxy with the increase of GNP content. The observed sufficient increase of electromagnetic radiation (EMR) shielding in K-a-band for high GNP content correlates with DC electrical conductivity increase. The simulation of the reflection loss in such composites in EMR frequency range of 1-67 GHz has been performed in C++ environment using experimentally determined permittivity frequency dependence. The influence of sample thickness on position, width, and depth of EMR absorption maximums was defined for the composites with 0, 3, 5 and 6 wt% content of graphite nanoplatelets and 35 wt% of BaTiO3 filler.

引用

页数：11

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