Electromagnetic properties and performance of exfoliated graphite (EG) - thermoplastic polyurethane (TPU) nanocomposites at microwaves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00445166" target="_blank" >RIV/61389013:_____/15:00445166 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.compscitech.2015.03.006" target="_blank" >http://dx.doi.org/10.1016/j.compscitech.2015.03.006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compscitech.2015.03.006" target="_blank" >10.1016/j.compscitech.2015.03.006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electromagnetic properties and performance of exfoliated graphite (EG) - thermoplastic polyurethane (TPU) nanocomposites at microwaves

Popis výsledku v původním jazyce

Nanocomposite materials based on commercial thermoplastic polyurethane (TPU) loaded with exfoliated graphite (EG) in concentration between 0 and 20 wt.% have been prepared with EG via melt mixing and compression molding. The materials? electromagnetic properties have been measured with wave-guide technique between 8.2 and 12.3 GHz. They had shown a clear proportional dependence of complex permittivity with EG content. Above 16 wt.% permittivity becomes frequency dependent. These results are discussed inview of material microstructure by means of scanning electron microscope (SEM) observations. Samples, with 20 wt.% EG and 4 mm thick, show an average value of 20 dB of shielding effectiveness (SE), which make them suitable as shielding material for commercial application. Simulations of metal backed configuration showed that important narrowband EM absorption (>15 dB) can be achieved at 1 mm thickness, while multilayer structures are necessary to obtain EM broadband absorption (>10 dB b

Název v anglickém jazyce

Electromagnetic properties and performance of exfoliated graphite (EG) - thermoplastic polyurethane (TPU) nanocomposites at microwaves

Popis výsledku anglicky

Nanocomposite materials based on commercial thermoplastic polyurethane (TPU) loaded with exfoliated graphite (EG) in concentration between 0 and 20 wt.% have been prepared with EG via melt mixing and compression molding. The materials? electromagnetic properties have been measured with wave-guide technique between 8.2 and 12.3 GHz. They had shown a clear proportional dependence of complex permittivity with EG content. Above 16 wt.% permittivity becomes frequency dependent. These results are discussed inview of material microstructure by means of scanning electron microscope (SEM) observations. Samples, with 20 wt.% EG and 4 mm thick, show an average value of 20 dB of shielding effectiveness (SE), which make them suitable as shielding material for commercial application. Simulations of metal backed configuration showed that important narrowband EM absorption (>15 dB) can be achieved at 1 mm thickness, while multilayer structures are necessary to obtain EM broadband absorption (>10 dB b

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Composites Science and Technology

ISSN

0266-3538

e-ISSN

—

Svazek periodika

114

Číslo periodika v rámci svazku

19 June

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

26-33

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-84930194511